TY  - JOUR
AU  - Mališić, Vanja
AU  - Gajić, Vuk
AU  - Porobić, Slavica
AU  - Patarić, Aleksandra
AU  - Putić, Slaviša
AU  - Vujčić, Ivica
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10683
AB  - Polymethyl methacrylate (PMMA) is a polymer material widely used in dental applications due to its excellent biocompatibility, stable physicochemical properties, easy manipulation, and low cost. The combination of biocompatible polymers and ceramics has great potential for the development of materials in the dental industry with improved mechanical properties. The addition of Al2O3 nanoparticles to PMMA can significantly improve its compressive and flexural strengths and wear resistance. Since this material is used in dental applications, it requires a high degree of product sterility. This can easily be achieved with gamma radiation treatment. Gamma radiation not only ensures the sterility of the product but can also affects changes in numerous material properties. The aim of this paper is to determine the influence of different doses of gamma radiation on the microbiological purity and changes in the mechanical and thermal properties of the PMMA/Al2O3 composite as well as the microstructural and color changes. It was found that the dose of radiation of 25 kGy is sufficient for complete sterilization of the product. This radiation dose improves the mechanical properties of the material and thermal stability. On the other hand, the dose of 25 kGy does not affect the morphology of the exposed sample and has small effect on the color change.
T2  - Radiation Physics and Chemistry
T1  - The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing
VL  - 207
SP  - 110846
DO  - 10.1016/j.radphyschem.2023.110846
ER  - 

@article{
author = "Mališić, Vanja and Gajić, Vuk and Porobić, Slavica and Patarić, Aleksandra and Putić, Slaviša and Vujčić, Ivica",
year = "2023",
abstract = "Polymethyl methacrylate (PMMA) is a polymer material widely used in dental applications due to its excellent biocompatibility, stable physicochemical properties, easy manipulation, and low cost. The combination of biocompatible polymers and ceramics has great potential for the development of materials in the dental industry with improved mechanical properties. The addition of Al2O3 nanoparticles to PMMA can significantly improve its compressive and flexural strengths and wear resistance. Since this material is used in dental applications, it requires a high degree of product sterility. This can easily be achieved with gamma radiation treatment. Gamma radiation not only ensures the sterility of the product but can also affects changes in numerous material properties. The aim of this paper is to determine the influence of different doses of gamma radiation on the microbiological purity and changes in the mechanical and thermal properties of the PMMA/Al2O3 composite as well as the microstructural and color changes. It was found that the dose of radiation of 25 kGy is sufficient for complete sterilization of the product. This radiation dose improves the mechanical properties of the material and thermal stability. On the other hand, the dose of 25 kGy does not affect the morphology of the exposed sample and has small effect on the color change.",
journal = "Radiation Physics and Chemistry",
title = "The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing",
volume = "207",
pages = "110846",
doi = "10.1016/j.radphyschem.2023.110846"
}

Mališić, V., Gajić, V., Porobić, S., Patarić, A., Putić, S.,& Vujčić, I.. (2023). The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing. in Radiation Physics and Chemistry, 207, 110846.
https://doi.org/10.1016/j.radphyschem.2023.110846

Mališić V, Gajić V, Porobić S, Patarić A, Putić S, Vujčić I. The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing. in Radiation Physics and Chemistry. 2023;207:110846.
doi:10.1016/j.radphyschem.2023.110846 .

Mališić, Vanja, Gajić, Vuk, Porobić, Slavica, Patarić, Aleksandra, Putić, Slaviša, Vujčić, Ivica, "The effect of gamma irradiation on the synthesis, microbiological sterility, and improvement of properties of PMMA-Al2O3 composite used in dental prosthesis manufacturing" in Radiation Physics and Chemistry, 207 (2023):110846,
https://doi.org/10.1016/j.radphyschem.2023.110846 . .

TY  - JOUR
AU  - Mališić, Vanja
AU  - Pezo, Milada
AU  - Jelić, Aleksandra
AU  - Patarić, Aleksandra
AU  - Putić, Slaviša
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/12281
AB  - Poly(methyl methacrylate) (PMMA) has a broad spectrum of uses, especially in medical applications. The role of fine-grained alumina particles of PMMA composites was investigated in this study. The composites were based on PMMA modified with dimethyl itaconate (DMI) as a matrix and alumina particles (Al2O3) and alumina doped with iron (Al2O3-Fe) modified with 3-aminopropyl-trimethoxysilane (AM) and flax oil fatty acid methyl esters (biodiesel) as reinforcements. Three particle sizes were measured (~0.4, ~0.6 and ~1.2 μm). The highest thermal conductivity values were measured for the composite 5 wt.% Al2O3-Fe-AM. With the addition of 3 wt.% Al2O3-AM to the PMMA/DMI matrix, mechanical properties were improved (tensile strength, strain, and modulus of elasticity). An artificial neural network model based on the Broyden-Fletcher-Goldfarb-Shanno iterative algorithm was investigated for prediction of thermal conductivity and mechanical properties of the composites showing satisfactory results. This is relevant for applications for optimization of dental materials to produce dentures, which were exposed to variations in temperature during the application.
AB  - Poli (metil metakrilata) (PMMA) ima široku upotrebu, posebno u stomatologiji i medicini. Kompoziti su napravljeni od PMMA modifikovanog dimetil itakonatom (DMI) kao matrice. Kao pojačanje korišćene su čestice glinice (Al2O3) i glinice dopirane oksidom gvožđa (Al2O3-Fe) modifikovanim sa 3-aminopropiltrimetoksilanom (AM) i metil estrima masnih kiselina lanenog ulja (biodizel – BD). Prema merenjima toplotne provodljivosti, najveće vrednosti toplotne provodljivosti imao je kompozit sa česticama glinice 5 wt.% Al2O3-Fe-AM. Dodatkom modifikovanih čestica glinice u PMMA/DMI matricu, poboljšane su mehaničke osobine (zatezna čvrstoća, deformacija i modul elastičnosti). Razvijen je model veštačke neuronske mreže zasnovan na iterativnom algoritmu predloženom u literaturi (Broiden-FletcherGoldfarb-Shanno), za predviđanje toplotne provodljivosti i mehaničkih svojstava kompozita na bazi akrilata u kombinaciji sa česticama na bazi glinice, u zavisnosti od masenog udela čestica, i dodatka oksida gvožđa i modifikatora. Pokazano je da ovi matematički modeli mogu predvideti mehanička i termička svojstva kompozitnih materijala. Ovo je posebno relevantno za predviđanje toplotne provodljivosti materijala koji se koriste u stomatologiji za izradu proteza i koji su izloženi temperaturnim promenama tokom primene.
T2  - Hemijska industrija
T1  - Prediction of thermal and mechanical properties of acrylate-based composites using artificial neural network modeling
T1  - Predviđanje termičkih i mehaničkih svojstava kompozita na bazi akrilata korišćenjem modela veštačke neuronske mreže
VL  - 77
IS  - 4
SP  - 293
EP  - 300
DO  - 10.2298/HEMIND230119029M
ER  - 

@article{
author = "Mališić, Vanja and Pezo, Milada and Jelić, Aleksandra and Patarić, Aleksandra and Putić, Slaviša",
year = "2023",
abstract = "Poly(methyl methacrylate) (PMMA) has a broad spectrum of uses, especially in medical applications. The role of fine-grained alumina particles of PMMA composites was investigated in this study. The composites were based on PMMA modified with dimethyl itaconate (DMI) as a matrix and alumina particles (Al2O3) and alumina doped with iron (Al2O3-Fe) modified with 3-aminopropyl-trimethoxysilane (AM) and flax oil fatty acid methyl esters (biodiesel) as reinforcements. Three particle sizes were measured (~0.4, ~0.6 and ~1.2 μm). The highest thermal conductivity values were measured for the composite 5 wt.% Al2O3-Fe-AM. With the addition of 3 wt.% Al2O3-AM to the PMMA/DMI matrix, mechanical properties were improved (tensile strength, strain, and modulus of elasticity). An artificial neural network model based on the Broyden-Fletcher-Goldfarb-Shanno iterative algorithm was investigated for prediction of thermal conductivity and mechanical properties of the composites showing satisfactory results. This is relevant for applications for optimization of dental materials to produce dentures, which were exposed to variations in temperature during the application., Poli (metil metakrilata) (PMMA) ima široku upotrebu, posebno u stomatologiji i medicini. Kompoziti su napravljeni od PMMA modifikovanog dimetil itakonatom (DMI) kao matrice. Kao pojačanje korišćene su čestice glinice (Al2O3) i glinice dopirane oksidom gvožđa (Al2O3-Fe) modifikovanim sa 3-aminopropiltrimetoksilanom (AM) i metil estrima masnih kiselina lanenog ulja (biodizel – BD). Prema merenjima toplotne provodljivosti, najveće vrednosti toplotne provodljivosti imao je kompozit sa česticama glinice 5 wt.% Al2O3-Fe-AM. Dodatkom modifikovanih čestica glinice u PMMA/DMI matricu, poboljšane su mehaničke osobine (zatezna čvrstoća, deformacija i modul elastičnosti). Razvijen je model veštačke neuronske mreže zasnovan na iterativnom algoritmu predloženom u literaturi (Broiden-FletcherGoldfarb-Shanno), za predviđanje toplotne provodljivosti i mehaničkih svojstava kompozita na bazi akrilata u kombinaciji sa česticama na bazi glinice, u zavisnosti od masenog udela čestica, i dodatka oksida gvožđa i modifikatora. Pokazano je da ovi matematički modeli mogu predvideti mehanička i termička svojstva kompozitnih materijala. Ovo je posebno relevantno za predviđanje toplotne provodljivosti materijala koji se koriste u stomatologiji za izradu proteza i koji su izloženi temperaturnim promenama tokom primene.",
journal = "Hemijska industrija",
title = "Prediction of thermal and mechanical properties of acrylate-based composites using artificial neural network modeling, Predviđanje termičkih i mehaničkih svojstava kompozita na bazi akrilata korišćenjem modela veštačke neuronske mreže",
volume = "77",
number = "4",
pages = "293-300",
doi = "10.2298/HEMIND230119029M"
}

Mališić, V., Pezo, M., Jelić, A., Patarić, A.,& Putić, S.. (2023). Prediction of thermal and mechanical properties of acrylate-based composites using artificial neural network modeling. in Hemijska industrija, 77(4), 293-300.
https://doi.org/10.2298/HEMIND230119029M

Mališić V, Pezo M, Jelić A, Patarić A, Putić S. Prediction of thermal and mechanical properties of acrylate-based composites using artificial neural network modeling. in Hemijska industrija. 2023;77(4):293-300.
doi:10.2298/HEMIND230119029M .

Mališić, Vanja, Pezo, Milada, Jelić, Aleksandra, Patarić, Aleksandra, Putić, Slaviša, "Prediction of thermal and mechanical properties of acrylate-based composites using artificial neural network modeling" in Hemijska industrija, 77, no. 4 (2023):293-300,
https://doi.org/10.2298/HEMIND230119029M . .

TY  - JOUR
AU  - Jelić, Aleksandra
AU  - Sekulić, Milica
AU  - Travica, Milan
AU  - Gržetić, Jelena
AU  - Ugrinović, Vukašin
AU  - Marinković, Aleksandar D.
AU  - Božić, Aleksandra
AU  - Stamenović, Marina
AU  - Putić, Slaviša
PY  - 2022
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10237
AB  - In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.
T2  - Polymers
T1  - Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)
VL  - 14
IS  - 6
SP  - 1255
DO  - 10.3390/polym14061255
ER  - 

@article{
author = "Jelić, Aleksandra and Sekulić, Milica and Travica, Milan and Gržetić, Jelena and Ugrinović, Vukašin and Marinković, Aleksandar D. and Božić, Aleksandra and Stamenović, Marina and Putić, Slaviša",
year = "2022",
abstract = "In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.",
journal = "Polymers",
title = "Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)",
volume = "14",
number = "6",
pages = "1255",
doi = "10.3390/polym14061255"
}

Jelić, A., Sekulić, M., Travica, M., Gržetić, J., Ugrinović, V., Marinković, A. D., Božić, A., Stamenović, M.,& Putić, S.. (2022). Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC). in Polymers, 14(6), 1255.
https://doi.org/10.3390/polym14061255

Jelić A, Sekulić M, Travica M, Gržetić J, Ugrinović V, Marinković AD, Božić A, Stamenović M, Putić S. Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC). in Polymers. 2022;14(6):1255.
doi:10.3390/polym14061255 .

Jelić, Aleksandra, Sekulić, Milica, Travica, Milan, Gržetić, Jelena, Ugrinović, Vukašin, Marinković, Aleksandar D., Božić, Aleksandra, Stamenović, Marina, Putić, Slaviša, "Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)" in Polymers, 14, no. 6 (2022):1255,
https://doi.org/10.3390/polym14061255 . .

TY  - JOUR
AU  - Jelić, Aleksandra
AU  - Sekulić, Milica
AU  - Stamenović, Marina
AU  - Ugrinović, Vukašin
AU  - Putić, Slaviša
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9707
AB  - The paper presents static and dynamic tests of carbon/epoxy composite materials with fiber orientation at 0 degrees/90 degrees and +/- 45 degrees. The main tensile properties were determined as a basis for subsequent dynamic tests, in which permanent dynamic strength, crack growth, and crack growth rate in the material due to the action of fatigue load were assessed. Comparisons were made regarding the structure of the tested specimens. Samples were obtained from prepregs with a specific density of 1600 kg/m(3). The tests were performed at room temperature. Scanning electron microscopy (SEM) was used to analyze the damage in the material during these tests, the mechanisms of their further damage progression and, the impact on the growth and growth rate of the initial crack in the material. The analysis of numerical results and micromechanical analysis confirmed the dominant role of the reinforcing structural element in the material in all performed tests. The obtained results are of great importance in the application of composite materials of such structures under different operating conditions and load regimes.
T2  - Hemijska industrija
T1  - Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing
VL  - 74
IS  - 4
SP  - 257
EP  - 264
DO  - 10.2298/HEMIND200615022J
ER  - 

@article{
author = "Jelić, Aleksandra and Sekulić, Milica and Stamenović, Marina and Ugrinović, Vukašin and Putić, Slaviša",
year = "2020",
abstract = "The paper presents static and dynamic tests of carbon/epoxy composite materials with fiber orientation at 0 degrees/90 degrees and +/- 45 degrees. The main tensile properties were determined as a basis for subsequent dynamic tests, in which permanent dynamic strength, crack growth, and crack growth rate in the material due to the action of fatigue load were assessed. Comparisons were made regarding the structure of the tested specimens. Samples were obtained from prepregs with a specific density of 1600 kg/m(3). The tests were performed at room temperature. Scanning electron microscopy (SEM) was used to analyze the damage in the material during these tests, the mechanisms of their further damage progression and, the impact on the growth and growth rate of the initial crack in the material. The analysis of numerical results and micromechanical analysis confirmed the dominant role of the reinforcing structural element in the material in all performed tests. The obtained results are of great importance in the application of composite materials of such structures under different operating conditions and load regimes.",
journal = "Hemijska industrija",
title = "Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing",
volume = "74",
number = "4",
pages = "257-264",
doi = "10.2298/HEMIND200615022J"
}

Jelić, A., Sekulić, M., Stamenović, M., Ugrinović, V.,& Putić, S.. (2020). Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing. in Hemijska industrija, 74(4), 257-264.
https://doi.org/10.2298/HEMIND200615022J

Jelić A, Sekulić M, Stamenović M, Ugrinović V, Putić S. Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing. in Hemijska industrija. 2020;74(4):257-264.
doi:10.2298/HEMIND200615022J .

Jelić, Aleksandra, Sekulić, Milica, Stamenović, Marina, Ugrinović, Vukašin, Putić, Slaviša, "Micromechanical analysis of fatigue and crack growth in carbon-fiber epoxy composites based on mechanical testing" in Hemijska industrija, 74, no. 4 (2020):257-264,
https://doi.org/10.2298/HEMIND200615022J . .

TY  - CONF
AU  - Tomić, Nataša Z.
AU  - Vuksanović, Marija M.
AU  - Balanč, Bojana
AU  - Stević, Zoran
AU  - Jančić-Heinemann, Radmila
AU  - Marinković, Aleksandar D.
AU  - Putić, Slaviša
PY  - 2019
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11396
AB  - Aluminijum oksid (Al2O3) je keramički materijal koji ima izuzetna mehanička, fizička i hemijska svojstva. Zbog svojih izuzetnih hemijskih svojstava, aluminijum oksid se koristi u kompozitima kao ojačanje i kao materijali za primenu u visokim temperaturama. U kompozitnim materijalima od posebnog interesa su različite strukture aluminijum oksida koje se mogu dobiti termičkom obradom. Cilj ovog rada bio je da se napravi kompozitni materijal sa matricom od PMMA itakonatnog kopolimera i da se ispitaju termička svojstva, u zavisnosti od dodavanja različitih punioca sa modifikacijom površine. Modul elastičnosti i čvrstoća PMMA se smanjuju dodavanjem itakonata u matricu. Čestice na bazi aluminijum oksida sa površinom modifikovanom sa organosilanom – 3-aminopropil-trimetoksilanom (AM) i u drugom stupnju sa metil estrima masnih kiselina lanenog ulja (biodizel-BD) korišćene su kao ojačanja. Čestice sa površinskom modifikacijom uspostavljaju bolju vezu sa polimernom matricom putem kovalentnih i vodoničnih veza i dipol-dipol interakcija. Efikasnim dispergovanjem čestica u matrici se postiže i poboljšan prenos opterećenja kroz matricu koji je praćem putem termovizijske kamere. Termogrami tokom testa na zatezanje ukazuju na razlike u temperaturama koje se javljaju u zoni loma kompozitnih materijala. Temperatura u zoni loma je u uskoj vezi sa efikasnošću prenosa opterećenja i temperaturne provodljivosti samog materijala. Mehanička svojstva materijala se poboljšavaju dodavanjem neorganskih čestica na bazi alminijum oksida sa aktiviranom površinom i na taj način stvoriti novi kompozitni materijal sa poboljšanjim mehaničkim i termičkim svojstava.
AB  - Aluminum oxide (Al2O3) is a ceramic material that has exceptional mechanical, physical and chemical properties. Due to its extraordinary chemical properties, aluminum oxide is used in composites as reinforcement and as material in high temperature applications. In composite materials of particular interest are different structures of aluminum oxide, which can be obtained by thermal treatment. The aim of this article was to make a composite material with a matrix made from PMMA itaconate copolymer and to examine the thermal properties, depending on the addition of various fillers with surface modification. Modulus of elasticity and the strengths of PMMA are in decrease by adding the itaconate to the matrix. Aluminum oxide based particles were used as reinforcement with a modified organosilane-3-aminopropyl-trimethoxylane (AM) surface and in the second stage with fatty acid fatty acid methyl esters (biodiesel-BD). Surface modification particles establish a better bond with the polymer matrix through covalent and hydrogen bonds and dipol-dipole interactions. Efficient dispersion of particles in the matrix also improves the transmission of the load through the matrix, which is followed by a thermionic camera. Thermograms during tensile test indicate differences in temperatures occurring in the fracture zone of composite materials. The temperature in the fracture zone is closely related to the efficiency of the load transfer and the temperature conductivity of the material itself. The mechanical properties of the material are improved by adding inorganic particles based on the activated surface of aluminum oxide, thereby creating a new composite material with improved mechanical and thermal properties.
PB  - Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS
C3  - 7th International Conference on Renewable Electrical Power Sources : the book of abstracts : October 17-18, Belgrade
T1  - Uticaj modifikacije čestica AL2O3 na toplotna i mehanička svojstva kompozita na bazi akrilata
T1  - Effect of Al[2]O[3] particles modification on the thermal and mechanical properties of the acrylate based composites
SP  - 113
EP  - 117
UR  - https://hdl.handle.net/21.15107/rcub_vinar_11396
ER  - 

@conference{
author = "Tomić, Nataša Z. and Vuksanović, Marija M. and Balanč, Bojana and Stević, Zoran and Jančić-Heinemann, Radmila and Marinković, Aleksandar D. and Putić, Slaviša",
year = "2019",
abstract = "Aluminijum oksid (Al2O3) je keramički materijal koji ima izuzetna mehanička, fizička i hemijska svojstva. Zbog svojih izuzetnih hemijskih svojstava, aluminijum oksid se koristi u kompozitima kao ojačanje i kao materijali za primenu u visokim temperaturama. U kompozitnim materijalima od posebnog interesa su različite strukture aluminijum oksida koje se mogu dobiti termičkom obradom. Cilj ovog rada bio je da se napravi kompozitni materijal sa matricom od PMMA itakonatnog kopolimera i da se ispitaju termička svojstva, u zavisnosti od dodavanja različitih punioca sa modifikacijom površine. Modul elastičnosti i čvrstoća PMMA se smanjuju dodavanjem itakonata u matricu. Čestice na bazi aluminijum oksida sa površinom modifikovanom sa organosilanom – 3-aminopropil-trimetoksilanom (AM) i u drugom stupnju sa metil estrima masnih kiselina lanenog ulja (biodizel-BD) korišćene su kao ojačanja. Čestice sa površinskom modifikacijom uspostavljaju bolju vezu sa polimernom matricom putem kovalentnih i vodoničnih veza i dipol-dipol interakcija. Efikasnim dispergovanjem čestica u matrici se postiže i poboljšan prenos opterećenja kroz matricu koji je praćem putem termovizijske kamere. Termogrami tokom testa na zatezanje ukazuju na razlike u temperaturama koje se javljaju u zoni loma kompozitnih materijala. Temperatura u zoni loma je u uskoj vezi sa efikasnošću prenosa opterećenja i temperaturne provodljivosti samog materijala. Mehanička svojstva materijala se poboljšavaju dodavanjem neorganskih čestica na bazi alminijum oksida sa aktiviranom površinom i na taj način stvoriti novi kompozitni materijal sa poboljšanjim mehaničkim i termičkim svojstava., Aluminum oxide (Al2O3) is a ceramic material that has exceptional mechanical, physical and chemical properties. Due to its extraordinary chemical properties, aluminum oxide is used in composites as reinforcement and as material in high temperature applications. In composite materials of particular interest are different structures of aluminum oxide, which can be obtained by thermal treatment. The aim of this article was to make a composite material with a matrix made from PMMA itaconate copolymer and to examine the thermal properties, depending on the addition of various fillers with surface modification. Modulus of elasticity and the strengths of PMMA are in decrease by adding the itaconate to the matrix. Aluminum oxide based particles were used as reinforcement with a modified organosilane-3-aminopropyl-trimethoxylane (AM) surface and in the second stage with fatty acid fatty acid methyl esters (biodiesel-BD). Surface modification particles establish a better bond with the polymer matrix through covalent and hydrogen bonds and dipol-dipole interactions. Efficient dispersion of particles in the matrix also improves the transmission of the load through the matrix, which is followed by a thermionic camera. Thermograms during tensile test indicate differences in temperatures occurring in the fracture zone of composite materials. The temperature in the fracture zone is closely related to the efficiency of the load transfer and the temperature conductivity of the material itself. The mechanical properties of the material are improved by adding inorganic particles based on the activated surface of aluminum oxide, thereby creating a new composite material with improved mechanical and thermal properties.",
publisher = "Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS",
journal = "7th International Conference on Renewable Electrical Power Sources : the book of abstracts : October 17-18, Belgrade",
title = "Uticaj modifikacije čestica AL2O3 na toplotna i mehanička svojstva kompozita na bazi akrilata, Effect of Al[2]O[3] particles modification on the thermal and mechanical properties of the acrylate based composites",
pages = "113-117",
url = "https://hdl.handle.net/21.15107/rcub_vinar_11396"
}

Tomić, N. Z., Vuksanović, M. M., Balanč, B., Stević, Z., Jančić-Heinemann, R., Marinković, A. D.,& Putić, S.. (2019). Uticaj modifikacije čestica AL2O3 na toplotna i mehanička svojstva kompozita na bazi akrilata. in 7th International Conference on Renewable Electrical Power Sources : the book of abstracts : October 17-18, Belgrade
Beograd : Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije - SMEITS., 113-117.
https://hdl.handle.net/21.15107/rcub_vinar_11396

Tomić NZ, Vuksanović MM, Balanč B, Stević Z, Jančić-Heinemann R, Marinković AD, Putić S. Uticaj modifikacije čestica AL2O3 na toplotna i mehanička svojstva kompozita na bazi akrilata. in 7th International Conference on Renewable Electrical Power Sources : the book of abstracts : October 17-18, Belgrade. 2019;:113-117.
https://hdl.handle.net/21.15107/rcub_vinar_11396 .

Tomić, Nataša Z., Vuksanović, Marija M., Balanč, Bojana, Stević, Zoran, Jančić-Heinemann, Radmila, Marinković, Aleksandar D., Putić, Slaviša, "Uticaj modifikacije čestica AL2O3 na toplotna i mehanička svojstva kompozita na bazi akrilata" in 7th International Conference on Renewable Electrical Power Sources : the book of abstracts : October 17-18, Belgrade (2019):113-117,
https://hdl.handle.net/21.15107/rcub_vinar_11396 .

TY  - JOUR
AU  - Dimić, Ivana
AU  - Cvijović-Alagić, Ivana
AU  - Rakin, Marica
AU  - Perić-Grujić, Aleksandra
AU  - Rakin, Marko
AU  - Bugarski, Branko
AU  - Putić, Slaviša
PY  - 2013
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11338
AB  - Due to their excellent characteristics, such as chemical inertness, mechanical resistance, low Young's modulus, high corrosion resistance, and outstanding biocompatibility, titanium and its alloys are the most used metallic materials for biomedical applications. In dental practice, these materials have demonstrated success as biomedical devices which are used for repairing and replacing failed hard tissue. However, the oral cavity is constantly subjected to the changes in the pH value changes and such an environment is strongly corrosive for titanium dental implants. The objective of this study was to examine ion release from commercially pure titanium (cpTi) in artificial saliva with different pH values (4.0, 5.5 and 7.5). The concentrations of released titanium ions were determined after 1, 3 and 6 weeks using Inductively Coupled Plasma - Mass Spectrometry. The results indicate that the ion release from commercially pure titanium in the artificial saliva is dependent both on the pH of artificial saliva and duration of immersion.
AB  - Titan i njegove legure su najčešće korišćeni metalni materijali za biomedicinsku primenu zbog njihovih odličnih karakteristika, kao što su hemijska inertnost, mehanička otpornost, nizak Jungov modul, visoka otpornost na koroziju i izvanredna biokompatibilnost. U stomatološkoj praksi, titan i njegove legure su pokazali uspeh kao biomedicinski uređaji, koji se koriste za popravku ili zamenu oštećenih čvrstih tkiva. Međutim, usna duplja je stalno izložena promenama pH vrednosti i takva sredina je izuzetno koroziona za dentalne implantate izrađene od titana. Cilj ovog rada je bio da se ispita otpuštanje jona iz komercijalno čistog titana (cpTi) u veštačkoj pljuvačci različite pH vrednosti (4.0, 5.5 i 7.5). Koncentracije otpuštenih jona titana su određene posle 1, 3 i 6 nedelja korišćenjem induktivno spregnute plazme sa masenom spektrometrijom (ICP-MS). Rezultati pokazuju da otpuštanje jona iz komercijalno čistog titana zavisi i od pH vrednosti veštačke pljuvačke i od dužine trajanja potapanja.
T2  - Acta periodica technologica
T1  - Effect of the pH of artificial saliva on ion release from commercially pure titanium
T1  - Uticaj pH vrednosti veštačke pljuvačke na otpuštanje jona iz komercijalno čistog titana
IS  - 44
SP  - 207
EP  - 215
DO  - 10.2298/APT1344207D
ER  - 

@article{
author = "Dimić, Ivana and Cvijović-Alagić, Ivana and Rakin, Marica and Perić-Grujić, Aleksandra and Rakin, Marko and Bugarski, Branko and Putić, Slaviša",
year = "2013",
abstract = "Due to their excellent characteristics, such as chemical inertness, mechanical resistance, low Young's modulus, high corrosion resistance, and outstanding biocompatibility, titanium and its alloys are the most used metallic materials for biomedical applications. In dental practice, these materials have demonstrated success as biomedical devices which are used for repairing and replacing failed hard tissue. However, the oral cavity is constantly subjected to the changes in the pH value changes and such an environment is strongly corrosive for titanium dental implants. The objective of this study was to examine ion release from commercially pure titanium (cpTi) in artificial saliva with different pH values (4.0, 5.5 and 7.5). The concentrations of released titanium ions were determined after 1, 3 and 6 weeks using Inductively Coupled Plasma - Mass Spectrometry. The results indicate that the ion release from commercially pure titanium in the artificial saliva is dependent both on the pH of artificial saliva and duration of immersion., Titan i njegove legure su najčešće korišćeni metalni materijali za biomedicinsku primenu zbog njihovih odličnih karakteristika, kao što su hemijska inertnost, mehanička otpornost, nizak Jungov modul, visoka otpornost na koroziju i izvanredna biokompatibilnost. U stomatološkoj praksi, titan i njegove legure su pokazali uspeh kao biomedicinski uređaji, koji se koriste za popravku ili zamenu oštećenih čvrstih tkiva. Međutim, usna duplja je stalno izložena promenama pH vrednosti i takva sredina je izuzetno koroziona za dentalne implantate izrađene od titana. Cilj ovog rada je bio da se ispita otpuštanje jona iz komercijalno čistog titana (cpTi) u veštačkoj pljuvačci različite pH vrednosti (4.0, 5.5 i 7.5). Koncentracije otpuštenih jona titana su određene posle 1, 3 i 6 nedelja korišćenjem induktivno spregnute plazme sa masenom spektrometrijom (ICP-MS). Rezultati pokazuju da otpuštanje jona iz komercijalno čistog titana zavisi i od pH vrednosti veštačke pljuvačke i od dužine trajanja potapanja.",
journal = "Acta periodica technologica",
title = "Effect of the pH of artificial saliva on ion release from commercially pure titanium, Uticaj pH vrednosti veštačke pljuvačke na otpuštanje jona iz komercijalno čistog titana",
number = "44",
pages = "207-215",
doi = "10.2298/APT1344207D"
}

Dimić, I., Cvijović-Alagić, I., Rakin, M., Perić-Grujić, A., Rakin, M., Bugarski, B.,& Putić, S.. (2013). Effect of the pH of artificial saliva on ion release from commercially pure titanium. in Acta periodica technologica(44), 207-215.
https://doi.org/10.2298/APT1344207D

Dimić I, Cvijović-Alagić I, Rakin M, Perić-Grujić A, Rakin M, Bugarski B, Putić S. Effect of the pH of artificial saliva on ion release from commercially pure titanium. in Acta periodica technologica. 2013;(44):207-215.
doi:10.2298/APT1344207D .

Dimić, Ivana, Cvijović-Alagić, Ivana, Rakin, Marica, Perić-Grujić, Aleksandra, Rakin, Marko, Bugarski, Branko, Putić, Slaviša, "Effect of the pH of artificial saliva on ion release from commercially pure titanium" in Acta periodica technologica, no. 44 (2013):207-215,
https://doi.org/10.2298/APT1344207D . .