TY  - JOUR
AU  - Stanić, Vojislav
AU  - Adnađević, Borivoj
AU  - Dimitrijević, Suzana I.
AU  - Dimović, Slavko
AU  - Mitrić, Miodrag
AU  - Zmejkovski, Bojana
AU  - Smiljanić, Slavko N.
PY  - 2018
UR  - http://www.doiserbia.nb.rs/Article.aspx?ID=1451-39941802180S
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7883
AB  - Fluorapatite nanopowders with different amounts of fluoride ions were prepared using the surfactant-assisted microwave method under isothermal conditions. Microwave irradiation was applied for the rapid formation of crystals. A micellar solution of polyoxyethylene (23) lauryl ether was used as a regulator of nucleation and crystal growth. Characterization studies from X-ray diffraction, field-emission scaning electron microscopy and Fourier-transform infrared spectra showed that crystals have an apatite structure and particles of all samples are nano size, with an average length of 50 nm and about 15-25 nm in diameter. Antimicrobial studies have demonstrated that synthesized fluorapatite nanopowders exhibit activity against tested pathogens: Escherichia coli, Staphylococcus aureus and Candida albicans. Activity increased with the amount of fluoride ions. The synthesized fluorapatite nanomaterials are promising as materials in environmental protection and medicine for orthopedics and dental restorations. © 2018, Vinca Inst Nuclear Sci. All rights reserved.
T2  - Nuclear Technology and Radiation Protection
T1  - Synthesis of fluorapatite nanopowders by a surfactant-assisted microwave method under isothermal conditions
VL  - 33
IS  - 2
SP  - 180
EP  - 187
DO  - 10.2298/NTRP1802180S
ER  - 

@article{
author = "Stanić, Vojislav and Adnađević, Borivoj and Dimitrijević, Suzana I. and Dimović, Slavko and Mitrić, Miodrag and Zmejkovski, Bojana and Smiljanić, Slavko N.",
year = "2018",
abstract = "Fluorapatite nanopowders with different amounts of fluoride ions were prepared using the surfactant-assisted microwave method under isothermal conditions. Microwave irradiation was applied for the rapid formation of crystals. A micellar solution of polyoxyethylene (23) lauryl ether was used as a regulator of nucleation and crystal growth. Characterization studies from X-ray diffraction, field-emission scaning electron microscopy and Fourier-transform infrared spectra showed that crystals have an apatite structure and particles of all samples are nano size, with an average length of 50 nm and about 15-25 nm in diameter. Antimicrobial studies have demonstrated that synthesized fluorapatite nanopowders exhibit activity against tested pathogens: Escherichia coli, Staphylococcus aureus and Candida albicans. Activity increased with the amount of fluoride ions. The synthesized fluorapatite nanomaterials are promising as materials in environmental protection and medicine for orthopedics and dental restorations. © 2018, Vinca Inst Nuclear Sci. All rights reserved.",
journal = "Nuclear Technology and Radiation Protection",
title = "Synthesis of fluorapatite nanopowders by a surfactant-assisted microwave method under isothermal conditions",
volume = "33",
number = "2",
pages = "180-187",
doi = "10.2298/NTRP1802180S"
}

Stanić, V., Adnađević, B., Dimitrijević, S. I., Dimović, S., Mitrić, M., Zmejkovski, B.,& Smiljanić, S. N.. (2018). Synthesis of fluorapatite nanopowders by a surfactant-assisted microwave method under isothermal conditions. in Nuclear Technology and Radiation Protection, 33(2), 180-187.
https://doi.org/10.2298/NTRP1802180S

Stanić V, Adnađević B, Dimitrijević SI, Dimović S, Mitrić M, Zmejkovski B, Smiljanić SN. Synthesis of fluorapatite nanopowders by a surfactant-assisted microwave method under isothermal conditions. in Nuclear Technology and Radiation Protection. 2018;33(2):180-187.
doi:10.2298/NTRP1802180S .

Stanić, Vojislav, Adnađević, Borivoj, Dimitrijević, Suzana I., Dimović, Slavko, Mitrić, Miodrag, Zmejkovski, Bojana, Smiljanić, Slavko N., "Synthesis of fluorapatite nanopowders by a surfactant-assisted microwave method under isothermal conditions" in Nuclear Technology and Radiation Protection, 33, no. 2 (2018):180-187,
https://doi.org/10.2298/NTRP1802180S . .

TY  - JOUR
AU  - Lazarević, Nataša
AU  - Adnađević, Borivoj
AU  - Jovanović, Jelena
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/117
AB  - The non-isothermal kinetics of nicotine desorption from precipitated silicon dioxide was investigated. The non-isothermal thermogravimetric curves of nicotine desorption at different heating rates (beta = 5, 10 and 20 K/min) were recorded. The kinetics model of non-isothermal kinetics of nicotine desorption was determined by using the model-fitting and master-plot methods. It was found that non-isothermal nicotine desorption can mathematically describe by the theoretical kinetics model of phase - boundary controlled reaction (contracting volume, i.e., three dimensional shape) - R3. By applying the method of Kissinger and method of invariant kinetic parameters the values of kinetic parameters were determined. It was established that both applied method give almost identical kinetic parameters regardless their theoretical limitations. The dependence of activation energy on the degree of nicotine desorption was determined using the KAS method. It was found that the value of activation energy is independent on the degree of nicotine desorption. The effect of heating mode on the kinetic of nicotine desorption was analyzed. It was established that the type of heating mode (isothermal and non-isothermal) does not influence the mechanism of the formation of the activation complex nor the kinetics model of desorption. The increase in the values of kinetic parameters obtained for non-isothermal heating in comparison to the isothermal ones are explained with the Larsons model of selective transfer of energy. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Thermochimica Acta
T1  - Kinetic analysis of nicotine desorption from silicon dioxide under non-isothermal conditions
VL  - 589
SP  - 100
EP  - 106
DO  - 10.1016/j.tca.2014.05.023
ER  - 

@article{
author = "Lazarević, Nataša and Adnađević, Borivoj and Jovanović, Jelena",
year = "2014",
abstract = "The non-isothermal kinetics of nicotine desorption from precipitated silicon dioxide was investigated. The non-isothermal thermogravimetric curves of nicotine desorption at different heating rates (beta = 5, 10 and 20 K/min) were recorded. The kinetics model of non-isothermal kinetics of nicotine desorption was determined by using the model-fitting and master-plot methods. It was found that non-isothermal nicotine desorption can mathematically describe by the theoretical kinetics model of phase - boundary controlled reaction (contracting volume, i.e., three dimensional shape) - R3. By applying the method of Kissinger and method of invariant kinetic parameters the values of kinetic parameters were determined. It was established that both applied method give almost identical kinetic parameters regardless their theoretical limitations. The dependence of activation energy on the degree of nicotine desorption was determined using the KAS method. It was found that the value of activation energy is independent on the degree of nicotine desorption. The effect of heating mode on the kinetic of nicotine desorption was analyzed. It was established that the type of heating mode (isothermal and non-isothermal) does not influence the mechanism of the formation of the activation complex nor the kinetics model of desorption. The increase in the values of kinetic parameters obtained for non-isothermal heating in comparison to the isothermal ones are explained with the Larsons model of selective transfer of energy. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Thermochimica Acta",
title = "Kinetic analysis of nicotine desorption from silicon dioxide under non-isothermal conditions",
volume = "589",
pages = "100-106",
doi = "10.1016/j.tca.2014.05.023"
}

Lazarević, N., Adnađević, B.,& Jovanović, J.. (2014). Kinetic analysis of nicotine desorption from silicon dioxide under non-isothermal conditions. in Thermochimica Acta, 589, 100-106.
https://doi.org/10.1016/j.tca.2014.05.023

Lazarević N, Adnađević B, Jovanović J. Kinetic analysis of nicotine desorption from silicon dioxide under non-isothermal conditions. in Thermochimica Acta. 2014;589:100-106.
doi:10.1016/j.tca.2014.05.023 .

Lazarević, Nataša, Adnađević, Borivoj, Jovanović, Jelena, "Kinetic analysis of nicotine desorption from silicon dioxide under non-isothermal conditions" in Thermochimica Acta, 589 (2014):100-106,
https://doi.org/10.1016/j.tca.2014.05.023 . .

TY  - CONF
AU  - Lazarević, Nataša
AU  - Jovanović, Jelena
AU  - Adnađević, Borivoj
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9199
AB  - The poly(acrylic acid) hydrogel (PAA) has been suggested as adsorbent
material to treat cobalt-60 in radioactive liquid waste. The kinetics of
isothermal adsorption of cobalt ions from an aqueous solution onto PAA
hydrogel was investigated in the temperature range from 298K to 315 K.
The kinetic model of Co2+ adsorption [1-(1-α)1/3]2=kt, was established by
using the model-fitting method. The kinetic parameters of Co2+ adsorption
(Ea = 41 kJ mol-1, ln [A/min-1]=12) were determined. It was found that
cobalt adsorption was kinetically controlled process which is determined by
the rate of three-dimensional diffusion Co2+ ions (D3).
PB  - Society of Physical Chemists of Serbia
C3  - Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
T1  - Research on treatment of liquid radioactive waste containing cobalt by adsorption on poly(acrilic acid) hydrogel
VL  - G-02-P
UR  - https://hdl.handle.net/21.15107/rcub_vinar_9199
ER  - 

@conference{
author = "Lazarević, Nataša and Jovanović, Jelena and Adnađević, Borivoj",
year = "2014",
abstract = "The poly(acrylic acid) hydrogel (PAA) has been suggested as adsorbent
material to treat cobalt-60 in radioactive liquid waste. The kinetics of
isothermal adsorption of cobalt ions from an aqueous solution onto PAA
hydrogel was investigated in the temperature range from 298K to 315 K.
The kinetic model of Co2+ adsorption [1-(1-α)1/3]2=kt, was established by
using the model-fitting method. The kinetic parameters of Co2+ adsorption
(Ea = 41 kJ mol-1, ln [A/min-1]=12) were determined. It was found that
cobalt adsorption was kinetically controlled process which is determined by
the rate of three-dimensional diffusion Co2+ ions (D3).",
publisher = "Society of Physical Chemists of Serbia",
journal = "Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry",
title = "Research on treatment of liquid radioactive waste containing cobalt by adsorption on poly(acrilic acid) hydrogel",
volume = "G-02-P",
url = "https://hdl.handle.net/21.15107/rcub_vinar_9199"
}

Lazarević, N., Jovanović, J.,& Adnađević, B.. (2014). Research on treatment of liquid radioactive waste containing cobalt by adsorption on poly(acrilic acid) hydrogel. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry
Society of Physical Chemists of Serbia., G-02-P.
https://hdl.handle.net/21.15107/rcub_vinar_9199

Lazarević N, Jovanović J, Adnađević B. Research on treatment of liquid radioactive waste containing cobalt by adsorption on poly(acrilic acid) hydrogel. in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry. 2014;G-02-P.
https://hdl.handle.net/21.15107/rcub_vinar_9199 .

Lazarević, Nataša, Jovanović, Jelena, Adnađević, Borivoj, "Research on treatment of liquid radioactive waste containing cobalt by adsorption on poly(acrilic acid) hydrogel" in Physical chemistry 2014: 12th International Conference on Fundamental and Applied Aspects of Physical Chemistry, G-02-P (2014),
https://hdl.handle.net/21.15107/rcub_vinar_9199 .

TY  - JOUR
AU  - Kisić, Danilo
AU  - Nenadović, Miloš
AU  - Štrbac, Svetlana
AU  - Adnađević, Borivoj
AU  - Rakočević, Zlatko Lj.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6015
AB  - The effect of ultraviolet (UV) ozone treatment on the surface properties of gold implanted high density polyethylene (HDPE) was investigated at a nanoscale using Atomic Force Microscopy (AFM). HDPE samples were modified by the implantation of gold ions at a dose of 5 x 10(15) ions/cm(2), using energies of 50, 100, 150, and 200 keV, and subsequently treated with UV/ozone. AFM surface topography images revealed that after UV/ozone treatment, the surface roughness of all Au/HDPE samples increased, while Power Spectral Density function increased only for samples implanted using higher energies, with a maximum for 150 keV. The chemical surface composition was homogenous in all cases, which was evidenced by appearance of single peaks in the histograms obtained from the phase AFM images. For UV/ozone treated samples, the shift of the peaks positions in the histograms to the higher values of the phase lag with respect to untreated ones indicated the decrease of surface hardness. Besides, a significant change of fractal dimension of surface grains is observed after UV/ozone treatment. (C) 2014 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Effect of UV/ozone treatment on the nanoscale surface properties of gold implanted polyethylene
VL  - 307
SP  - 311
EP  - 318
DO  - 10.1016/j.apsusc.2014.04.032
ER  - 

@article{
author = "Kisić, Danilo and Nenadović, Miloš and Štrbac, Svetlana and Adnađević, Borivoj and Rakočević, Zlatko Lj.",
year = "2014",
abstract = "The effect of ultraviolet (UV) ozone treatment on the surface properties of gold implanted high density polyethylene (HDPE) was investigated at a nanoscale using Atomic Force Microscopy (AFM). HDPE samples were modified by the implantation of gold ions at a dose of 5 x 10(15) ions/cm(2), using energies of 50, 100, 150, and 200 keV, and subsequently treated with UV/ozone. AFM surface topography images revealed that after UV/ozone treatment, the surface roughness of all Au/HDPE samples increased, while Power Spectral Density function increased only for samples implanted using higher energies, with a maximum for 150 keV. The chemical surface composition was homogenous in all cases, which was evidenced by appearance of single peaks in the histograms obtained from the phase AFM images. For UV/ozone treated samples, the shift of the peaks positions in the histograms to the higher values of the phase lag with respect to untreated ones indicated the decrease of surface hardness. Besides, a significant change of fractal dimension of surface grains is observed after UV/ozone treatment. (C) 2014 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Effect of UV/ozone treatment on the nanoscale surface properties of gold implanted polyethylene",
volume = "307",
pages = "311-318",
doi = "10.1016/j.apsusc.2014.04.032"
}

Kisić, D., Nenadović, M., Štrbac, S., Adnađević, B.,& Rakočević, Z. Lj.. (2014). Effect of UV/ozone treatment on the nanoscale surface properties of gold implanted polyethylene. in Applied Surface Science, 307, 311-318.
https://doi.org/10.1016/j.apsusc.2014.04.032

Kisić D, Nenadović M, Štrbac S, Adnađević B, Rakočević ZL. Effect of UV/ozone treatment on the nanoscale surface properties of gold implanted polyethylene. in Applied Surface Science. 2014;307:311-318.
doi:10.1016/j.apsusc.2014.04.032 .

Kisić, Danilo, Nenadović, Miloš, Štrbac, Svetlana, Adnađević, Borivoj, Rakočević, Zlatko Lj., "Effect of UV/ozone treatment on the nanoscale surface properties of gold implanted polyethylene" in Applied Surface Science, 307 (2014):311-318,
https://doi.org/10.1016/j.apsusc.2014.04.032 . .

TY  - JOUR
AU  - Kepić, Dejan P.
AU  - Marković, Zoran M.
AU  - Tošić, Dragana
AU  - Holclajtner-Antunović, Ivanka D.
AU  - Adnađević, Borivoj
AU  - Prekodravac, Jovana
AU  - Kleut, Duška
AU  - Dramićanin, Miroslav
AU  - Todorović-Marković, Biljana
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/7022
AB  - In this work, we present the results of a Raman spectroscopy study of single-wall carbon nanotube (SWCNT) thin films treated with microwave irradiation. SWCNT thin films were deposited by the vacuum filtration method and transferred onto alumina substrate. These thin films were exposed to microwave irradiation of 25 and 250 W at 2.45 GHz. All samples were characterized by Raman spectroscopy and atomic force microscopy. Raman spectroscopy analysis showed that there was neither selective destruction of metallic nor semiconducting nanotubes. It was noticed that samples were heated only during microwave irradiation at 250 W. The major effect of microwave irradiation on SWCNTs was their debundling.
T2  - Physica Scripta
T1  - Surface modification of single-wall carbon nanotube thin films irradiated by microwaves: a Raman spectroscopy study
VL  - T157
DO  - 10.1088/0031-8949/2013/T157/014040
ER  - 

@article{
author = "Kepić, Dejan P. and Marković, Zoran M. and Tošić, Dragana and Holclajtner-Antunović, Ivanka D. and Adnađević, Borivoj and Prekodravac, Jovana and Kleut, Duška and Dramićanin, Miroslav and Todorović-Marković, Biljana",
year = "2013",
abstract = "In this work, we present the results of a Raman spectroscopy study of single-wall carbon nanotube (SWCNT) thin films treated with microwave irradiation. SWCNT thin films were deposited by the vacuum filtration method and transferred onto alumina substrate. These thin films were exposed to microwave irradiation of 25 and 250 W at 2.45 GHz. All samples were characterized by Raman spectroscopy and atomic force microscopy. Raman spectroscopy analysis showed that there was neither selective destruction of metallic nor semiconducting nanotubes. It was noticed that samples were heated only during microwave irradiation at 250 W. The major effect of microwave irradiation on SWCNTs was their debundling.",
journal = "Physica Scripta",
title = "Surface modification of single-wall carbon nanotube thin films irradiated by microwaves: a Raman spectroscopy study",
volume = "T157",
doi = "10.1088/0031-8949/2013/T157/014040"
}

Kepić, D. P., Marković, Z. M., Tošić, D., Holclajtner-Antunović, I. D., Adnađević, B., Prekodravac, J., Kleut, D., Dramićanin, M.,& Todorović-Marković, B.. (2013). Surface modification of single-wall carbon nanotube thin films irradiated by microwaves: a Raman spectroscopy study. in Physica Scripta, T157.
https://doi.org/10.1088/0031-8949/2013/T157/014040

Kepić DP, Marković ZM, Tošić D, Holclajtner-Antunović ID, Adnađević B, Prekodravac J, Kleut D, Dramićanin M, Todorović-Marković B. Surface modification of single-wall carbon nanotube thin films irradiated by microwaves: a Raman spectroscopy study. in Physica Scripta. 2013;T157.
doi:10.1088/0031-8949/2013/T157/014040 .

Kepić, Dejan P., Marković, Zoran M., Tošić, Dragana, Holclajtner-Antunović, Ivanka D., Adnađević, Borivoj, Prekodravac, Jovana, Kleut, Duška, Dramićanin, Miroslav, Todorović-Marković, Biljana, "Surface modification of single-wall carbon nanotube thin films irradiated by microwaves: a Raman spectroscopy study" in Physica Scripta, T157 (2013),
https://doi.org/10.1088/0031-8949/2013/T157/014040 . .

TY  - JOUR
AU  - Adnađević, Borivoj
AU  - Tasić, Gvozden S.
AU  - Jovanović, Jelena
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4207
AB  - The kinetic of non-isothermal dehydration of equilibrium swollen poly(acrylic acid-co-methacrylic acid) hydrogel (PAM) has been investigated. Thermogravimetric and conversion dehydration curves were recorded at various heating rates 5-30 K min(-1). The conversion dehydration curves at all investigated temperatures can be mathematically described using the logistic regression function in entire. It was found that activation energy complexly changes with the increasing dehydration degree. Physical meaning of the parameters of logistic function (band w) is given. It was established that, during the dehydration, changes in the fluctuating hydrogel structure occur, and that limiting step on the kinetics of hydrogel dehydration have rate of structural rearrangement of hydrogel (actual relaxation mechanism). A procedure for determining the dependence of effective activation energy on temperature and dehydration degree, based on logistic function, is exposed. Possible explanation for the existence of negative values of activation energy in the certain range of temperature, is given. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Thermochimica Acta
T1  - Kinetic of non-isothermal dehydration of equilibrium swollen poly(acrylic acid-co-methacrylic acid) hydrogel
VL  - 512
IS  - 1-2
SP  - 157
EP  - 162
DO  - 10.1016/j.tca.2010.09.019
ER  - 

@article{
author = "Adnađević, Borivoj and Tasić, Gvozden S. and Jovanović, Jelena",
year = "2011",
abstract = "The kinetic of non-isothermal dehydration of equilibrium swollen poly(acrylic acid-co-methacrylic acid) hydrogel (PAM) has been investigated. Thermogravimetric and conversion dehydration curves were recorded at various heating rates 5-30 K min(-1). The conversion dehydration curves at all investigated temperatures can be mathematically described using the logistic regression function in entire. It was found that activation energy complexly changes with the increasing dehydration degree. Physical meaning of the parameters of logistic function (band w) is given. It was established that, during the dehydration, changes in the fluctuating hydrogel structure occur, and that limiting step on the kinetics of hydrogel dehydration have rate of structural rearrangement of hydrogel (actual relaxation mechanism). A procedure for determining the dependence of effective activation energy on temperature and dehydration degree, based on logistic function, is exposed. Possible explanation for the existence of negative values of activation energy in the certain range of temperature, is given. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Thermochimica Acta",
title = "Kinetic of non-isothermal dehydration of equilibrium swollen poly(acrylic acid-co-methacrylic acid) hydrogel",
volume = "512",
number = "1-2",
pages = "157-162",
doi = "10.1016/j.tca.2010.09.019"
}

Adnađević, B., Tasić, G. S.,& Jovanović, J.. (2011). Kinetic of non-isothermal dehydration of equilibrium swollen poly(acrylic acid-co-methacrylic acid) hydrogel. in Thermochimica Acta, 512(1-2), 157-162.
https://doi.org/10.1016/j.tca.2010.09.019

Adnađević B, Tasić GS, Jovanović J. Kinetic of non-isothermal dehydration of equilibrium swollen poly(acrylic acid-co-methacrylic acid) hydrogel. in Thermochimica Acta. 2011;512(1-2):157-162.
doi:10.1016/j.tca.2010.09.019 .

Adnađević, Borivoj, Tasić, Gvozden S., Jovanović, Jelena, "Kinetic of non-isothermal dehydration of equilibrium swollen poly(acrylic acid-co-methacrylic acid) hydrogel" in Thermochimica Acta, 512, no. 1-2 (2011):157-162,
https://doi.org/10.1016/j.tca.2010.09.019 . .

TY  - JOUR
AU  - Adnađević, Borivoj
AU  - Jovanović, Jelena
AU  - Lazarević, Nataša
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4146
AB  - The isothermal kinetic of the release of nicotine from a poly(acrylic acid) (PAA) hydrogel was investigated at temperature range from 26 degrees C to 45 degrees C. Specific shape parameters of the kinetic curves, the period of linearity and saturation time were determined. The change in the specific shape parameters of the kinetic curves with temperature and the kinetic parameters of release of nicotine E(a) and ln A were determined. By applying the model fitting method it was established that the kinetic model of release of nicotine from the PAA hydrogel was [1 - (1 - alpha)(1/3)] = k(M)t. The limiting stage of the kinetics release of nicotine was found to be the contracting volume of the interaction interface. The distribution function of the activation energy was determined and the most probable values of activation energies of 25.5 kJ mol(-1) and 35 kJ mol(-1) were obtained. Energetically heterogeneity of the interaction interface was explained by the existence of the two different modes of bonding the nicotine molecules onto the hydrogel network by hydrogen bond and electrostatic forces. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 1805-1812, 2011
T2  - Journal of Applied Polymer Science
T1  - Kinetics Study of Isothermal Nicotine Release from Poly(acrylic acid) Hydrogel
VL  - 119
IS  - 3
SP  - 1805
EP  - 1812
DO  - 10.1002/app.32869
ER  - 

@article{
author = "Adnađević, Borivoj and Jovanović, Jelena and Lazarević, Nataša",
year = "2011",
abstract = "The isothermal kinetic of the release of nicotine from a poly(acrylic acid) (PAA) hydrogel was investigated at temperature range from 26 degrees C to 45 degrees C. Specific shape parameters of the kinetic curves, the period of linearity and saturation time were determined. The change in the specific shape parameters of the kinetic curves with temperature and the kinetic parameters of release of nicotine E(a) and ln A were determined. By applying the model fitting method it was established that the kinetic model of release of nicotine from the PAA hydrogel was [1 - (1 - alpha)(1/3)] = k(M)t. The limiting stage of the kinetics release of nicotine was found to be the contracting volume of the interaction interface. The distribution function of the activation energy was determined and the most probable values of activation energies of 25.5 kJ mol(-1) and 35 kJ mol(-1) were obtained. Energetically heterogeneity of the interaction interface was explained by the existence of the two different modes of bonding the nicotine molecules onto the hydrogel network by hydrogen bond and electrostatic forces. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 119: 1805-1812, 2011",
journal = "Journal of Applied Polymer Science",
title = "Kinetics Study of Isothermal Nicotine Release from Poly(acrylic acid) Hydrogel",
volume = "119",
number = "3",
pages = "1805-1812",
doi = "10.1002/app.32869"
}

Adnađević, B., Jovanović, J.,& Lazarević, N.. (2011). Kinetics Study of Isothermal Nicotine Release from Poly(acrylic acid) Hydrogel. in Journal of Applied Polymer Science, 119(3), 1805-1812.
https://doi.org/10.1002/app.32869

Adnađević B, Jovanović J, Lazarević N. Kinetics Study of Isothermal Nicotine Release from Poly(acrylic acid) Hydrogel. in Journal of Applied Polymer Science. 2011;119(3):1805-1812.
doi:10.1002/app.32869 .

Adnađević, Borivoj, Jovanović, Jelena, Lazarević, Nataša, "Kinetics Study of Isothermal Nicotine Release from Poly(acrylic acid) Hydrogel" in Journal of Applied Polymer Science, 119, no. 3 (2011):1805-1812,
https://doi.org/10.1002/app.32869 . .

TY  - JOUR
AU  - Lazarević, Nataša
AU  - Adnađević, Borivoj
AU  - Jovanović, Jelena
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4333
AB  - The isothermal adsorption of nicotine from an aqueous solution onto zeolite type USY was investigated. The adsorption isotherms of nicotine onto the zeolite at different temperatures ranging from 298 to 322K were determined. It was found that the adsorption isotherms can be described by the model of Freundlich adsorption isotherm. Based on the adsorption isotherms the changes of adsorption heat, free energy and entropy with adsorption degree were determined. The determined decrease of adsorption heat with adsorption degree can be explained by the presence of the adsorption centers of different energy and concentration on interface of zeolite-nicotine solution. It was found that the probability function of density distribution of the heat of adsorption (DDF) has exponential form. It was concluded that the possibility of fitting the adsorption isotherms of nicotine onto the zeolite by Freundlich adsorption isotherm was a direct consequence of that. The determined increase in entropy with the increase in adsorption degree can be explained with the change of phase state of adsorbed nicotine. (C) 2011 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Adsorption of nicotine from aqueous solution onto hydrophobic zeolite type USY
VL  - 257
IS  - 18
SP  - 8017
EP  - 8023
DO  - 10.1016/j.apsusc.2011.04.076
ER  - 

@article{
author = "Lazarević, Nataša and Adnađević, Borivoj and Jovanović, Jelena",
year = "2011",
abstract = "The isothermal adsorption of nicotine from an aqueous solution onto zeolite type USY was investigated. The adsorption isotherms of nicotine onto the zeolite at different temperatures ranging from 298 to 322K were determined. It was found that the adsorption isotherms can be described by the model of Freundlich adsorption isotherm. Based on the adsorption isotherms the changes of adsorption heat, free energy and entropy with adsorption degree were determined. The determined decrease of adsorption heat with adsorption degree can be explained by the presence of the adsorption centers of different energy and concentration on interface of zeolite-nicotine solution. It was found that the probability function of density distribution of the heat of adsorption (DDF) has exponential form. It was concluded that the possibility of fitting the adsorption isotherms of nicotine onto the zeolite by Freundlich adsorption isotherm was a direct consequence of that. The determined increase in entropy with the increase in adsorption degree can be explained with the change of phase state of adsorbed nicotine. (C) 2011 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Adsorption of nicotine from aqueous solution onto hydrophobic zeolite type USY",
volume = "257",
number = "18",
pages = "8017-8023",
doi = "10.1016/j.apsusc.2011.04.076"
}

Lazarević, N., Adnađević, B.,& Jovanović, J.. (2011). Adsorption of nicotine from aqueous solution onto hydrophobic zeolite type USY. in Applied Surface Science, 257(18), 8017-8023.
https://doi.org/10.1016/j.apsusc.2011.04.076

Lazarević N, Adnađević B, Jovanović J. Adsorption of nicotine from aqueous solution onto hydrophobic zeolite type USY. in Applied Surface Science. 2011;257(18):8017-8023.
doi:10.1016/j.apsusc.2011.04.076 .

Lazarević, Nataša, Adnađević, Borivoj, Jovanović, Jelena, "Adsorption of nicotine from aqueous solution onto hydrophobic zeolite type USY" in Applied Surface Science, 257, no. 18 (2011):8017-8023,
https://doi.org/10.1016/j.apsusc.2011.04.076 . .

TY  - JOUR
AU  - Adnađević, Borivoj
AU  - Lazarević, Nataša
AU  - Jovanović, Jelena
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4109
AB  - The isothermal kinetics of nicotine desorption from silicon dioxide (SiO(2)) was investigated. The isothermal thermogravimetric curves of nicotine at temperatures of 115 degrees C, 130 degrees C and 152 degrees C were recorded. The kinetic parameters (E(a), lnA) of desorption of nicotine were calculated using various methods (stationary point, model constants and differential isoconversion method). By applying the model-fitting method, it was found that the kinetic model of nicotine desorption from silicon dioxide was a phase boundary controlled reaction (contracting volume). The values of the kinetic parameters, E(a,alpha) and lnA(alpha), complexly change with changing degree of desorption and a compensation effect exists. A new mechanism of activation for the desorption of the absorbed molecules of nicotine was suggested in agreement with model of selective energy transfer. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - A study of the kinetics of isothermal nicotine desorption from silicon dioxide
VL  - 257
IS  - 5
SP  - 1425
EP  - 1430
DO  - 10.1016/j.apsusc.2010.08.055
ER  - 

@article{
author = "Adnađević, Borivoj and Lazarević, Nataša and Jovanović, Jelena",
year = "2010",
abstract = "The isothermal kinetics of nicotine desorption from silicon dioxide (SiO(2)) was investigated. The isothermal thermogravimetric curves of nicotine at temperatures of 115 degrees C, 130 degrees C and 152 degrees C were recorded. The kinetic parameters (E(a), lnA) of desorption of nicotine were calculated using various methods (stationary point, model constants and differential isoconversion method). By applying the model-fitting method, it was found that the kinetic model of nicotine desorption from silicon dioxide was a phase boundary controlled reaction (contracting volume). The values of the kinetic parameters, E(a,alpha) and lnA(alpha), complexly change with changing degree of desorption and a compensation effect exists. A new mechanism of activation for the desorption of the absorbed molecules of nicotine was suggested in agreement with model of selective energy transfer. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "A study of the kinetics of isothermal nicotine desorption from silicon dioxide",
volume = "257",
number = "5",
pages = "1425-1430",
doi = "10.1016/j.apsusc.2010.08.055"
}

Adnađević, B., Lazarević, N.,& Jovanović, J.. (2010). A study of the kinetics of isothermal nicotine desorption from silicon dioxide. in Applied Surface Science, 257(5), 1425-1430.
https://doi.org/10.1016/j.apsusc.2010.08.055

Adnađević B, Lazarević N, Jovanović J. A study of the kinetics of isothermal nicotine desorption from silicon dioxide. in Applied Surface Science. 2010;257(5):1425-1430.
doi:10.1016/j.apsusc.2010.08.055 .

Adnađević, Borivoj, Lazarević, Nataša, Jovanović, Jelena, "A study of the kinetics of isothermal nicotine desorption from silicon dioxide" in Applied Surface Science, 257, no. 5 (2010):1425-1430,
https://doi.org/10.1016/j.apsusc.2010.08.055 . .

TY  - JOUR
AU  - Janković, Bojan Ž.
AU  - Adnađević, Borivoj
AU  - Kolar-Anić, Ljiljana
AU  - Smičiklas, Ivana D.
PY  - 2010
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4022
AB  - The possibility of applying the Weibull mixture model for the fitting of the non-isothermal conversion data for the combustion process of animal bone samples has been investigated. It has been found that the conversion data at the different heating rates for the investigated samples, can be successfully described by the linear combination of few Weibull distribution functions. An optimal fitting of the conversion data has been obtained by a mixture of three Weibull distribution functions. It was established that the conversion curves calculated by the proposed model, are in good agreement with the raw conversion data of the investigated bone samples. The alterations of distribution parameters in the Weibull mixture model, indicate a probably change of the kinetic nature of the particular reaction stage. A model with a continuous distribution of the apparent activation energies (E-a) can adequately represents the individually stages of the complex combustion process. The characterization of the estimated distribution curves, enable us to receive the additional informations about the kinetic behaviour of individual reaction stages, which does not attainable from the results of conventional kinetic analysis. (C) 2010 Elsevier B.V. All rights reserved.
T2  - Thermochimica Acta
T1  - The non-isothermal thermogravimetric tests of animal bones combustion. Part II. Statistical analysis: Application of the Weibull mixture model
VL  - 505
IS  - 1-2
SP  - 98
EP  - 105
DO  - 10.1016/j.tca.2010.04.005
ER  - 

@article{
author = "Janković, Bojan Ž. and Adnađević, Borivoj and Kolar-Anić, Ljiljana and Smičiklas, Ivana D.",
year = "2010",
abstract = "The possibility of applying the Weibull mixture model for the fitting of the non-isothermal conversion data for the combustion process of animal bone samples has been investigated. It has been found that the conversion data at the different heating rates for the investigated samples, can be successfully described by the linear combination of few Weibull distribution functions. An optimal fitting of the conversion data has been obtained by a mixture of three Weibull distribution functions. It was established that the conversion curves calculated by the proposed model, are in good agreement with the raw conversion data of the investigated bone samples. The alterations of distribution parameters in the Weibull mixture model, indicate a probably change of the kinetic nature of the particular reaction stage. A model with a continuous distribution of the apparent activation energies (E-a) can adequately represents the individually stages of the complex combustion process. The characterization of the estimated distribution curves, enable us to receive the additional informations about the kinetic behaviour of individual reaction stages, which does not attainable from the results of conventional kinetic analysis. (C) 2010 Elsevier B.V. All rights reserved.",
journal = "Thermochimica Acta",
title = "The non-isothermal thermogravimetric tests of animal bones combustion. Part II. Statistical analysis: Application of the Weibull mixture model",
volume = "505",
number = "1-2",
pages = "98-105",
doi = "10.1016/j.tca.2010.04.005"
}

Janković, B. Ž., Adnađević, B., Kolar-Anić, L.,& Smičiklas, I. D.. (2010). The non-isothermal thermogravimetric tests of animal bones combustion. Part II. Statistical analysis: Application of the Weibull mixture model. in Thermochimica Acta, 505(1-2), 98-105.
https://doi.org/10.1016/j.tca.2010.04.005

Janković BŽ, Adnađević B, Kolar-Anić L, Smičiklas ID. The non-isothermal thermogravimetric tests of animal bones combustion. Part II. Statistical analysis: Application of the Weibull mixture model. in Thermochimica Acta. 2010;505(1-2):98-105.
doi:10.1016/j.tca.2010.04.005 .

Janković, Bojan Ž., Adnađević, Borivoj, Kolar-Anić, Ljiljana, Smičiklas, Ivana D., "The non-isothermal thermogravimetric tests of animal bones combustion. Part II. Statistical analysis: Application of the Weibull mixture model" in Thermochimica Acta, 505, no. 1-2 (2010):98-105,
https://doi.org/10.1016/j.tca.2010.04.005 . .

TY  - JOUR
AU  - Savić, Jasmina
AU  - Vasić, Vesna M.
AU  - Adnađević, Borivoj
PY  - 2007
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3409
AB  - The adsorption kinetics of pyrazol- (PACA) and imidazol-azo-chromo-tropic acid (IACA) onto Dowex 1-X8 resin, as a function of the dye concentration and temperature were investigated at pH 4.5. The pseudo-first- and second-order kinetic models and intraparticle diffusion model were used to describe the obtained kinetic data. The adsorption rate constants were found to be in the order of magnitude 10(-2) min(-1) for all of the used kinetics models. The adsorption capacity increases with increasing initial dye concentration. The study of adsorption kinetics at different temperatures (in the range from 5 to 25 degrees C) reveals an increase in the rate of adsorption and adsorption capacity with increasing temperature. The activation energy (in the case of PACA 16.6 kJ/mol, and for IACA 11.3 kJ/mol) was determined using the Arrhenius dependence. Electrostatic interactions between the dye and resin beads were shown to be the adsorption mechanism.
T2  - Hemijska industrija
T1  - Kinetic investigation of the immobilization of chromotropic acid derivatives onto anion exchange resin
VL  - 61
IS  - 1
SP  - 13
EP  - 17
DO  - 10.2298/HEMIND0701013S
ER  - 

@article{
author = "Savić, Jasmina and Vasić, Vesna M. and Adnađević, Borivoj",
year = "2007",
abstract = "The adsorption kinetics of pyrazol- (PACA) and imidazol-azo-chromo-tropic acid (IACA) onto Dowex 1-X8 resin, as a function of the dye concentration and temperature were investigated at pH 4.5. The pseudo-first- and second-order kinetic models and intraparticle diffusion model were used to describe the obtained kinetic data. The adsorption rate constants were found to be in the order of magnitude 10(-2) min(-1) for all of the used kinetics models. The adsorption capacity increases with increasing initial dye concentration. The study of adsorption kinetics at different temperatures (in the range from 5 to 25 degrees C) reveals an increase in the rate of adsorption and adsorption capacity with increasing temperature. The activation energy (in the case of PACA 16.6 kJ/mol, and for IACA 11.3 kJ/mol) was determined using the Arrhenius dependence. Electrostatic interactions between the dye and resin beads were shown to be the adsorption mechanism.",
journal = "Hemijska industrija",
title = "Kinetic investigation of the immobilization of chromotropic acid derivatives onto anion exchange resin",
volume = "61",
number = "1",
pages = "13-17",
doi = "10.2298/HEMIND0701013S"
}

Savić, J., Vasić, V. M.,& Adnađević, B.. (2007). Kinetic investigation of the immobilization of chromotropic acid derivatives onto anion exchange resin. in Hemijska industrija, 61(1), 13-17.
https://doi.org/10.2298/HEMIND0701013S

Savić J, Vasić VM, Adnađević B. Kinetic investigation of the immobilization of chromotropic acid derivatives onto anion exchange resin. in Hemijska industrija. 2007;61(1):13-17.
doi:10.2298/HEMIND0701013S .

Savić, Jasmina, Vasić, Vesna M., Adnađević, Borivoj, "Kinetic investigation of the immobilization of chromotropic acid derivatives onto anion exchange resin" in Hemijska industrija, 61, no. 1 (2007):13-17,
https://doi.org/10.2298/HEMIND0701013S . .

TY  - JOUR
AU  - Petrović, Suzana
AU  - Adnađević, Borivoj
AU  - Peruško, Davor
AU  - Popovic, Nada
AU  - Bundaleski, Nenad
AU  - Radović, Milan
AU  - Gaković, Biljana M.
AU  - Rakočević, Zlatko Lj.
PY  - 2006
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3123
AB  - Thin films were deposited by d.c. sputtering onto a Silicon Substrate. The influence of the W-Ti thin film thickness to its structural and morphological characteristics of a nano-scale were studied. The phase composition and grain size were studied by X-ray diffraction (XRD), while the surface morphology and surface roughness were determined by scanning tunneling microscopy (STM). The analysis of the phase composition show that the thin films had a polycrystalline structure they were composed of a b.c.c. W phase with the presence of a h.c.p. Ti phase. The XRD peak in the scattering angle interval of 38 degrees-43 degrees was interpreted as an overlap of peaks corresponding to the W(110) and Ti(101) planes. The grain size and the mean surface roughness both increase with the thikness of the thin film. The chemical composition of the thin film surface was also analysed by low energy ions scattering (LEIS). The results show the surface segregation of titanium, as well as a substantial presence of oxygen an the surface.
T2  - Journal of the Serbian Chemical Society
T1  - Structure and morphology of nano-sized W-Ti/Si thin films
VL  - 71
IS  - 8-9
SP  - 969
EP  - 976
DO  - 10.2298/JSC0609969P
ER  - 

@article{
author = "Petrović, Suzana and Adnađević, Borivoj and Peruško, Davor and Popovic, Nada and Bundaleski, Nenad and Radović, Milan and Gaković, Biljana M. and Rakočević, Zlatko Lj.",
year = "2006",
abstract = "Thin films were deposited by d.c. sputtering onto a Silicon Substrate. The influence of the W-Ti thin film thickness to its structural and morphological characteristics of a nano-scale were studied. The phase composition and grain size were studied by X-ray diffraction (XRD), while the surface morphology and surface roughness were determined by scanning tunneling microscopy (STM). The analysis of the phase composition show that the thin films had a polycrystalline structure they were composed of a b.c.c. W phase with the presence of a h.c.p. Ti phase. The XRD peak in the scattering angle interval of 38 degrees-43 degrees was interpreted as an overlap of peaks corresponding to the W(110) and Ti(101) planes. The grain size and the mean surface roughness both increase with the thikness of the thin film. The chemical composition of the thin film surface was also analysed by low energy ions scattering (LEIS). The results show the surface segregation of titanium, as well as a substantial presence of oxygen an the surface.",
journal = "Journal of the Serbian Chemical Society",
title = "Structure and morphology of nano-sized W-Ti/Si thin films",
volume = "71",
number = "8-9",
pages = "969-976",
doi = "10.2298/JSC0609969P"
}

Petrović, S., Adnađević, B., Peruško, D., Popovic, N., Bundaleski, N., Radović, M., Gaković, B. M.,& Rakočević, Z. Lj.. (2006). Structure and morphology of nano-sized W-Ti/Si thin films. in Journal of the Serbian Chemical Society, 71(8-9), 969-976.
https://doi.org/10.2298/JSC0609969P

Petrović S, Adnađević B, Peruško D, Popovic N, Bundaleski N, Radović M, Gaković BM, Rakočević ZL. Structure and morphology of nano-sized W-Ti/Si thin films. in Journal of the Serbian Chemical Society. 2006;71(8-9):969-976.
doi:10.2298/JSC0609969P .

Petrović, Suzana, Adnađević, Borivoj, Peruško, Davor, Popovic, Nada, Bundaleski, Nenad, Radović, Milan, Gaković, Biljana M., Rakočević, Zlatko Lj., "Structure and morphology of nano-sized W-Ti/Si thin films" in Journal of the Serbian Chemical Society, 71, no. 8-9 (2006):969-976,
https://doi.org/10.2298/JSC0609969P . .

TY  - JOUR
AU  - Jovanović, J
AU  - Adnađević, Borivoj
AU  - Suljovrujić, Edin H.
AU  - Ignjatović, Nenad L.
AU  - Uskoković, Dragan
PY  - 2003
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/6357
AB  - Injectable and gas-permeable composite cements, polydimethylsiloxane/hydroxyapatite (PDMS/HAp), were synthesized using bi-component polysiloxane precursors (RTV-A and RTV-B), which react by hydrosilylation, and different mass fractions of hydroxyapatite (HAp) having particle size of about 100 nm. The effect of HAp mass fraction (0-60%) on the thermodynamic and kinetic parameters of polysiloxanes cross-linking, i.e., PDMS/HAp composite preparation, was investigated by means of differential scanning calorimetry (DSC). It was determined that small mass fractions of HAp (up to about 10%) cause a decrease in temperature (T-max), and activation energy (E-a) of the investigated cross-linking process, while the total heat of the process (H-tot) increases. For the HAp mass fraction greater than 20%, an opposite effect was observed. The temperature and the time interval of cross-linking increase rapidly for smaller, but slowly, almost insignificantly, for larger HAp mass fractions. The determined order (n) of the reaction shows a trend similar to H-tot, but due to small variations found, this does not merit discussion.
T2  - Materials Science Forum
T1  - Influence of the HAp ratio on the thermodynamic and kinetic parameters of PDMS/HAp composites cross-linking
VL  - 413
SP  - 263
EP  - 268
UR  - https://hdl.handle.net/21.15107/rcub_vinar_6357
ER  - 

@article{
author = "Jovanović, J and Adnađević, Borivoj and Suljovrujić, Edin H. and Ignjatović, Nenad L. and Uskoković, Dragan",
year = "2003",
abstract = "Injectable and gas-permeable composite cements, polydimethylsiloxane/hydroxyapatite (PDMS/HAp), were synthesized using bi-component polysiloxane precursors (RTV-A and RTV-B), which react by hydrosilylation, and different mass fractions of hydroxyapatite (HAp) having particle size of about 100 nm. The effect of HAp mass fraction (0-60%) on the thermodynamic and kinetic parameters of polysiloxanes cross-linking, i.e., PDMS/HAp composite preparation, was investigated by means of differential scanning calorimetry (DSC). It was determined that small mass fractions of HAp (up to about 10%) cause a decrease in temperature (T-max), and activation energy (E-a) of the investigated cross-linking process, while the total heat of the process (H-tot) increases. For the HAp mass fraction greater than 20%, an opposite effect was observed. The temperature and the time interval of cross-linking increase rapidly for smaller, but slowly, almost insignificantly, for larger HAp mass fractions. The determined order (n) of the reaction shows a trend similar to H-tot, but due to small variations found, this does not merit discussion.",
journal = "Materials Science Forum",
title = "Influence of the HAp ratio on the thermodynamic and kinetic parameters of PDMS/HAp composites cross-linking",
volume = "413",
pages = "263-268",
url = "https://hdl.handle.net/21.15107/rcub_vinar_6357"
}

Jovanović, J., Adnađević, B., Suljovrujić, E. H., Ignjatović, N. L.,& Uskoković, D.. (2003). Influence of the HAp ratio on the thermodynamic and kinetic parameters of PDMS/HAp composites cross-linking. in Materials Science Forum, 413, 263-268.
https://hdl.handle.net/21.15107/rcub_vinar_6357

Jovanović J, Adnađević B, Suljovrujić EH, Ignjatović NL, Uskoković D. Influence of the HAp ratio on the thermodynamic and kinetic parameters of PDMS/HAp composites cross-linking. in Materials Science Forum. 2003;413:263-268.
https://hdl.handle.net/21.15107/rcub_vinar_6357 .

Jovanović, J, Adnađević, Borivoj, Suljovrujić, Edin H., Ignjatović, Nenad L., Uskoković, Dragan, "Influence of the HAp ratio on the thermodynamic and kinetic parameters of PDMS/HAp composites cross-linking" in Materials Science Forum, 413 (2003):263-268,
https://hdl.handle.net/21.15107/rcub_vinar_6357 .