TY  - JOUR
AU  - Maksin, Danijela D.
AU  - Nastasović, Aleksandra B.
AU  - Maksin, Tatjana N.
AU  - Sandić, Zvjezdana
AU  - Loos, Katja
AU  - Ekmescic, Bojana M.
AU  - Onjia, Antonije E.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/984
AB  - Synthesis of an unconventional resin based on 4-vinylpyridine (4-VP) and its Cu(II) sorption behavior were studied. Three samples of macroporous crosslinked poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) (P4VPE) with different porosity parameters were prepared by suspension copolymerization by varying the n-heptane amount in the inert component. The samples were characterized by mercury porosimetry, elemental analysis and X-ray photoelectron spectroscopy (XPS). The sorption of P4VPE for Cu(II) ions, determined under non-competitive conditions, was relatively rapid, i.e., the maximum capacity was reached within 30 min. The maximum experimental sorption capacity for the sample with the highest values of pore diameter and specific pore volume (sample 3, Q(eq) = 89 mg g(-1)) was 17.5 times higher than for the sample with the lowest values of pore diameter and specific pore volume (sample 1, Q(eq) = 5.1 mg g(-1)). Since the values for pyridine content in all P4VPE samples were almost the same, it was concluded that the porosity parameters have predominant influence on Cu(II) sorption rates on P4VPE. The sorption behavior and the rate-controlling mechanisms were analyzed using six kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion, Bangham and Boyd models). XPS study clarified the nature of the formed P4VPE-Cu(II) species.
T2  - Hemijska industrija
T1  - Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis
VL  - 70
IS  - 1
SP  - 9
EP  - 19
DO  - 10.2298/HEMIND141203007M
ER  - 

@article{
author = "Maksin, Danijela D. and Nastasović, Aleksandra B. and Maksin, Tatjana N. and Sandić, Zvjezdana and Loos, Katja and Ekmescic, Bojana M. and Onjia, Antonije E.",
year = "2016",
abstract = "Synthesis of an unconventional resin based on 4-vinylpyridine (4-VP) and its Cu(II) sorption behavior were studied. Three samples of macroporous crosslinked poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) (P4VPE) with different porosity parameters were prepared by suspension copolymerization by varying the n-heptane amount in the inert component. The samples were characterized by mercury porosimetry, elemental analysis and X-ray photoelectron spectroscopy (XPS). The sorption of P4VPE for Cu(II) ions, determined under non-competitive conditions, was relatively rapid, i.e., the maximum capacity was reached within 30 min. The maximum experimental sorption capacity for the sample with the highest values of pore diameter and specific pore volume (sample 3, Q(eq) = 89 mg g(-1)) was 17.5 times higher than for the sample with the lowest values of pore diameter and specific pore volume (sample 1, Q(eq) = 5.1 mg g(-1)). Since the values for pyridine content in all P4VPE samples were almost the same, it was concluded that the porosity parameters have predominant influence on Cu(II) sorption rates on P4VPE. The sorption behavior and the rate-controlling mechanisms were analyzed using six kinetic models (pseudo-first order, pseudo-second order, Elovich, intraparticle diffusion, Bangham and Boyd models). XPS study clarified the nature of the formed P4VPE-Cu(II) species.",
journal = "Hemijska industrija",
title = "Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis",
volume = "70",
number = "1",
pages = "9-19",
doi = "10.2298/HEMIND141203007M"
}

Maksin, D. D., Nastasović, A. B., Maksin, T. N., Sandić, Z., Loos, K., Ekmescic, B. M.,& Onjia, A. E.. (2016). Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis. in Hemijska industrija, 70(1), 9-19.
https://doi.org/10.2298/HEMIND141203007M

Maksin DD, Nastasović AB, Maksin TN, Sandić Z, Loos K, Ekmescic BM, Onjia AE. Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis. in Hemijska industrija. 2016;70(1):9-19.
doi:10.2298/HEMIND141203007M .

Maksin, Danijela D., Nastasović, Aleksandra B., Maksin, Tatjana N., Sandić, Zvjezdana, Loos, Katja, Ekmescic, Bojana M., Onjia, Antonije E., "Cu(II) immobilization onto a one-step synthesized poly(4-vinylpyridine-co-ethylene glycol dimethacrylate) resin: Kinetics and XPS analysis" in Hemijska industrija, 70, no. 1 (2016):9-19,
https://doi.org/10.2298/HEMIND141203007M . .

TY  - JOUR
AU  - Nastasović, Aleksandra B.
AU  - Ekmescic, Bojana M.
AU  - Sandić, Zvjezdana
AU  - Ranđelović, Danijela V.
AU  - Mozetic, Miran
AU  - Vesel, Alenka
AU  - Onjia, Antonije E.
PY  - 2016
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/1201
AB  - The mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (PGME) functionalized by reaction of the pendant epoxy groups with diethylene triamine (PGME-deta) was studied using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) analysis. Atomic force microscopy (AFM) and scanning energy-dispersive X-ray spectroscopy (SEM-EDX) were used for the determination of surface morphology of the copolymer particles. The sorption behavior of heavy metals Cu(II), Cd(II) and Pb(II) ions sorption was investigated in batch static experiments under non-competitive conditions at room temperature (298 K). The obtained results were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion kinetic model. The kinetics studies showed that Cu(II), Cd(II) and Pb(II) sorption obeys the pseudo-second-order model under all investigated operating conditions with evident influence of pore diffusion. (C) 2016 Elsevier B.V. All rights reserved.
T2  - Applied Surface Science
T1  - Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)
VL  - 385
SP  - 605
EP  - 615
DO  - 10.1016/j.apsusc.2016.05.165
ER  - 

@article{
author = "Nastasović, Aleksandra B. and Ekmescic, Bojana M. and Sandić, Zvjezdana and Ranđelović, Danijela V. and Mozetic, Miran and Vesel, Alenka and Onjia, Antonije E.",
year = "2016",
abstract = "The mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (PGME) functionalized by reaction of the pendant epoxy groups with diethylene triamine (PGME-deta) was studied using X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) analysis. Atomic force microscopy (AFM) and scanning energy-dispersive X-ray spectroscopy (SEM-EDX) were used for the determination of surface morphology of the copolymer particles. The sorption behavior of heavy metals Cu(II), Cd(II) and Pb(II) ions sorption was investigated in batch static experiments under non-competitive conditions at room temperature (298 K). The obtained results were fitted to pseudo-first order, pseudo-second order and intraparticle diffusion kinetic model. The kinetics studies showed that Cu(II), Cd(II) and Pb(II) sorption obeys the pseudo-second-order model under all investigated operating conditions with evident influence of pore diffusion. (C) 2016 Elsevier B.V. All rights reserved.",
journal = "Applied Surface Science",
title = "Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)",
volume = "385",
pages = "605-615",
doi = "10.1016/j.apsusc.2016.05.165"
}

Nastasović, A. B., Ekmescic, B. M., Sandić, Z., Ranđelović, D. V., Mozetic, M., Vesel, A.,& Onjia, A. E.. (2016). Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate). in Applied Surface Science, 385, 605-615.
https://doi.org/10.1016/j.apsusc.2016.05.165

Nastasović AB, Ekmescic BM, Sandić Z, Ranđelović DV, Mozetic M, Vesel A, Onjia AE. Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate). in Applied Surface Science. 2016;385:605-615.
doi:10.1016/j.apsusc.2016.05.165 .

Nastasović, Aleksandra B., Ekmescic, Bojana M., Sandić, Zvjezdana, Ranđelović, Danijela V., Mozetic, Miran, Vesel, Alenka, Onjia, Antonije E., "Mechanism of Cu(II), Cd(II) and Pb(II) ions sorption from aqueous solutions by macroporous poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate)" in Applied Surface Science, 385 (2016):605-615,
https://doi.org/10.1016/j.apsusc.2016.05.165 . .

TY  - JOUR
AU  - Stefanovic, Ivan S.
AU  - Ekmescic, Bojana M.
AU  - Maksin, Danijela D.
AU  - Nastasović, Aleksandra B.
AU  - Miladinovic, Zoran P.
AU  - Vuković, Zorica M.
AU  - Micić, Darko M.
AU  - Pergal, Marija V.
PY  - 2015
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/667
AB  - Novel macroporous functionalized copolymers with different cross-linker concentrations and porosity parameters were synthesized by reaction of the pendant epoxy groups of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA)) with hexamethylene diamine 1,3-bis(3-aminopropyl)tetramethyldisiloxane, and alpha,omega-diaminopropyl poly(dimethylsiloxane). The copolymers were prepared in forms, of spherical beads and characterized by Fourier transform infrared (FTIR); C-13 and Si-29 solid-state NMR, mercury porosimetry, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Copolymers prepared with the higher cross-linker concentrations have better thermal stability, higher glass transition temperatures; higher specific surface areas, and smaller pore diameters that correspond to half Of the pore volumes. Out results show that functionalization significantly changed porosity parameters, mechanism of thermal degradation; and increased thermal, stability in comparison with the initial copolymers. These macroporous copolymers could potentially have many applications, i.e. for sorption of heavy and precious metals or as Material for gas chromatography columns.
T2  - Industrial and Engineering Chemistry Research
T1  - Structure, Thermal, and Morphological Properties of Novel Macroporous Amino-Functionalized Glycidyl Methacrylate Based Copolymers
VL  - 54
IS  - 27
SP  - 6902
EP  - 6911
DO  - 10.1021/acs.iecr.5b01285
ER  - 

@article{
author = "Stefanovic, Ivan S. and Ekmescic, Bojana M. and Maksin, Danijela D. and Nastasović, Aleksandra B. and Miladinovic, Zoran P. and Vuković, Zorica M. and Micić, Darko M. and Pergal, Marija V.",
year = "2015",
abstract = "Novel macroporous functionalized copolymers with different cross-linker concentrations and porosity parameters were synthesized by reaction of the pendant epoxy groups of poly(glycidyl methacrylate-co-ethylene glycol dimethacrylate) (poly(GMA-co-EGDMA)) with hexamethylene diamine 1,3-bis(3-aminopropyl)tetramethyldisiloxane, and alpha,omega-diaminopropyl poly(dimethylsiloxane). The copolymers were prepared in forms, of spherical beads and characterized by Fourier transform infrared (FTIR); C-13 and Si-29 solid-state NMR, mercury porosimetry, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and scanning electron microscopy (SEM). Copolymers prepared with the higher cross-linker concentrations have better thermal stability, higher glass transition temperatures; higher specific surface areas, and smaller pore diameters that correspond to half Of the pore volumes. Out results show that functionalization significantly changed porosity parameters, mechanism of thermal degradation; and increased thermal, stability in comparison with the initial copolymers. These macroporous copolymers could potentially have many applications, i.e. for sorption of heavy and precious metals or as Material for gas chromatography columns.",
journal = "Industrial and Engineering Chemistry Research",
title = "Structure, Thermal, and Morphological Properties of Novel Macroporous Amino-Functionalized Glycidyl Methacrylate Based Copolymers",
volume = "54",
number = "27",
pages = "6902-6911",
doi = "10.1021/acs.iecr.5b01285"
}

Stefanovic, I. S., Ekmescic, B. M., Maksin, D. D., Nastasović, A. B., Miladinovic, Z. P., Vuković, Z. M., Micić, D. M.,& Pergal, M. V.. (2015). Structure, Thermal, and Morphological Properties of Novel Macroporous Amino-Functionalized Glycidyl Methacrylate Based Copolymers. in Industrial and Engineering Chemistry Research, 54(27), 6902-6911.
https://doi.org/10.1021/acs.iecr.5b01285

Stefanovic IS, Ekmescic BM, Maksin DD, Nastasović AB, Miladinovic ZP, Vuković ZM, Micić DM, Pergal MV. Structure, Thermal, and Morphological Properties of Novel Macroporous Amino-Functionalized Glycidyl Methacrylate Based Copolymers. in Industrial and Engineering Chemistry Research. 2015;54(27):6902-6911.
doi:10.1021/acs.iecr.5b01285 .

Stefanovic, Ivan S., Ekmescic, Bojana M., Maksin, Danijela D., Nastasović, Aleksandra B., Miladinovic, Zoran P., Vuković, Zorica M., Micić, Darko M., Pergal, Marija V., "Structure, Thermal, and Morphological Properties of Novel Macroporous Amino-Functionalized Glycidyl Methacrylate Based Copolymers" in Industrial and Engineering Chemistry Research, 54, no. 27 (2015):6902-6911,
https://doi.org/10.1021/acs.iecr.5b01285 . .

TY  - JOUR
AU  - Nastasović, Aleksandra B.
AU  - Ignjatović, Nenad L.
AU  - Uskoković, Dragan
AU  - Markovic, Dana D.
AU  - Ekmescic, Bojana M.
AU  - Maksin, Danijela D.
AU  - Onjia, Antonije E.
PY  - 2014
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/5987
AB  - Inverse gas chromatography at infinite dilution was applied to determine the thermodynamic interactions of poly(l-lactide) (PLLA) and the composite of biphasic calcium phosphate and PLLA (BCP/PLLA). The specific retention volumes, , of 11 organic compounds of different chemical nature and polarity (non-polar, donor or acceptor) were determined in the temperature range of 308-378 K for PLLA and 308-398 K for BCP/PLLA. The weight fraction activity coefficients of test sorbates, , and the Flory-Huggins interaction parameters, , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, , the partial molar heat of mixing, , the sorption molar free energy, , the sorption enthalpy, , and the sorption entropy, , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of indicated n-alkanes, diethyl ether, tetrahydrofurane (THF), cyclohexane, benzene, dioxane (except for 338 K), and ethyl acetate (EtAc) (except for 338 K) as non-solvents, and chloroform (CHCl3) as good solvent (except for 378 K) for PLLA. For BCP/PLLA, CHCl3, EtAc (for 378 K), dioxane (except for 378 K), and THF were indicated as good solvents.
T2  - Journal of Materials Science
T1  - Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution
VL  - 49
IS  - 14
SP  - 5076
EP  - 5086
DO  - 10.1007/s10853-014-8214-3
ER  - 

@article{
author = "Nastasović, Aleksandra B. and Ignjatović, Nenad L. and Uskoković, Dragan and Markovic, Dana D. and Ekmescic, Bojana M. and Maksin, Danijela D. and Onjia, Antonije E.",
year = "2014",
abstract = "Inverse gas chromatography at infinite dilution was applied to determine the thermodynamic interactions of poly(l-lactide) (PLLA) and the composite of biphasic calcium phosphate and PLLA (BCP/PLLA). The specific retention volumes, , of 11 organic compounds of different chemical nature and polarity (non-polar, donor or acceptor) were determined in the temperature range of 308-378 K for PLLA and 308-398 K for BCP/PLLA. The weight fraction activity coefficients of test sorbates, , and the Flory-Huggins interaction parameters, , were estimated and discussed in terms of interactions of the sorbates with PLLA and BCP/PLLA. Also, the partial molar free energy, , the partial molar heat of mixing, , the sorption molar free energy, , the sorption enthalpy, , and the sorption entropy, , were analyzed. A different chromatographic behavior of the two investigated samples, PLLA and BCP/PLLA, was observed. The values of indicated n-alkanes, diethyl ether, tetrahydrofurane (THF), cyclohexane, benzene, dioxane (except for 338 K), and ethyl acetate (EtAc) (except for 338 K) as non-solvents, and chloroform (CHCl3) as good solvent (except for 378 K) for PLLA. For BCP/PLLA, CHCl3, EtAc (for 378 K), dioxane (except for 378 K), and THF were indicated as good solvents.",
journal = "Journal of Materials Science",
title = "Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution",
volume = "49",
number = "14",
pages = "5076-5086",
doi = "10.1007/s10853-014-8214-3"
}

Nastasović, A. B., Ignjatović, N. L., Uskoković, D., Markovic, D. D., Ekmescic, B. M., Maksin, D. D.,& Onjia, A. E.. (2014). Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution. in Journal of Materials Science, 49(14), 5076-5086.
https://doi.org/10.1007/s10853-014-8214-3

Nastasović AB, Ignjatović NL, Uskoković D, Markovic DD, Ekmescic BM, Maksin DD, Onjia AE. Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution. in Journal of Materials Science. 2014;49(14):5076-5086.
doi:10.1007/s10853-014-8214-3 .

Nastasović, Aleksandra B., Ignjatović, Nenad L., Uskoković, Dragan, Markovic, Dana D., Ekmescic, Bojana M., Maksin, Danijela D., Onjia, Antonije E., "Determination of thermodynamic interactions of polylactide and biphasic calcium phosphate/polylactidecomposite by inverse gas chromatography at infinite dilution" in Journal of Materials Science, 49, no. 14 (2014):5076-5086,
https://doi.org/10.1007/s10853-014-8214-3 . .