TY  - JOUR
AU  - Josić, Uros
AU  - Radović, Ivana
AU  - Juloski, Jelena
AU  - Beloica, Miloš
AU  - Popović, Miljana
AU  - Alil, Ana
AU  - Mandić, Jelena
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4516
AB  - Purpose: Immature teeth are characterized by short roots, thin root canal walls, and open apices, which makes them prone to fracture. The aim was to investigate whether fiber-post placement had an influence on the fracture resistance of endodontically treated immature teeth. Materials and Methods: To simulate immature teeth, the apical third of 20 intact mandibular premolars was resected. After the access cavity was prepared, root canals and apices were enlarged. A 4-mm apical barrier was placed using calcium-silicate based material (Biodentine, Septodont). The teeth were then randomly assigned to two groups (n = 10). Root canals in group 1 were sealed using Acroseal (Septodont, France) and gutta-percha, followed by composite resin for the coronal restoration (Evetric, Ivoclar Vivadent). In group 2, fiber posts (FRC Postec Plus, Ivoclar Vivadent) were luted using self-adhesive composite cement (SpeedCEM Plus, Ivoclar Vivadent), followed by the same coronal restoration. The teeth were then subjected to fatigue and static load testing. Results: The average loads (+/- SD) that led to tooth fracture were: 401.40 +/- 296.83 N in group 1 and 636.20 +/- 204.95 N in group 2. Unfavorable fractures were noted in 9 specimens from group 1 and in 7 specimens in group 2. No statistically significant difference in fracture resistance or fracture mode was found between the groups. Conclusion: Fiber-post placement had no significant influence on the fracture resistance of endodontically treated immature teeth.
PB  - Quintessence Publishing Co Inc, Hanover Park
T2  - Journal of Adhesive Dentistry
T1  - Can Fiber-post Placement Reinforce Structurally Compromised Roots?
EP  - 414
IS  - 4
SP  - 409
VL  - 22
DO  - 10.3290/j.jad.a44872
ER  - 

@article{
author = "Josić, Uros and Radović, Ivana and Juloski, Jelena and Beloica, Miloš and Popović, Miljana and Alil, Ana and Mandić, Jelena",
year = "2020",
abstract = "Purpose: Immature teeth are characterized by short roots, thin root canal walls, and open apices, which makes them prone to fracture. The aim was to investigate whether fiber-post placement had an influence on the fracture resistance of endodontically treated immature teeth. Materials and Methods: To simulate immature teeth, the apical third of 20 intact mandibular premolars was resected. After the access cavity was prepared, root canals and apices were enlarged. A 4-mm apical barrier was placed using calcium-silicate based material (Biodentine, Septodont). The teeth were then randomly assigned to two groups (n = 10). Root canals in group 1 were sealed using Acroseal (Septodont, France) and gutta-percha, followed by composite resin for the coronal restoration (Evetric, Ivoclar Vivadent). In group 2, fiber posts (FRC Postec Plus, Ivoclar Vivadent) were luted using self-adhesive composite cement (SpeedCEM Plus, Ivoclar Vivadent), followed by the same coronal restoration. The teeth were then subjected to fatigue and static load testing. Results: The average loads (+/- SD) that led to tooth fracture were: 401.40 +/- 296.83 N in group 1 and 636.20 +/- 204.95 N in group 2. Unfavorable fractures were noted in 9 specimens from group 1 and in 7 specimens in group 2. No statistically significant difference in fracture resistance or fracture mode was found between the groups. Conclusion: Fiber-post placement had no significant influence on the fracture resistance of endodontically treated immature teeth.",
publisher = "Quintessence Publishing Co Inc, Hanover Park",
journal = "Journal of Adhesive Dentistry",
title = "Can Fiber-post Placement Reinforce Structurally Compromised Roots?",
pages = "414-409",
number = "4",
volume = "22",
doi = "10.3290/j.jad.a44872"
}

Josić, U., Radović, I., Juloski, J., Beloica, M., Popović, M., Alil, A.,& Mandić, J.. (2020). Can Fiber-post Placement Reinforce Structurally Compromised Roots?. in Journal of Adhesive Dentistry
Quintessence Publishing Co Inc, Hanover Park., 22(4), 409-414.
https://doi.org/10.3290/j.jad.a44872

Josić U, Radović I, Juloski J, Beloica M, Popović M, Alil A, Mandić J. Can Fiber-post Placement Reinforce Structurally Compromised Roots?. in Journal of Adhesive Dentistry. 2020;22(4):409-414.
doi:10.3290/j.jad.a44872 .

Josić, Uros, Radović, Ivana, Juloski, Jelena, Beloica, Miloš, Popović, Miljana, Alil, Ana, Mandić, Jelena, "Can Fiber-post Placement Reinforce Structurally Compromised Roots?" in Journal of Adhesive Dentistry, 22, no. 4 (2020):409-414,
https://doi.org/10.3290/j.jad.a44872 . .

TY  - JOUR
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Radisavljević, Anđela
AU  - Veljković, Filip M.
AU  - Čebela, Maria
AU  - Mitić, Vojislav V.
AU  - Radojević, Vesna
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4435
AB  - Nowadays, there is a very high importance of composite research and variety of their applications in the modern world. In that sense, we researched hollow glass capillaries filled with dissolved Grubbs catalyst (GC) and dicyclopentadiene (DCPD) were incorporated into a fiber-reinforced epoxy with the aim of improving the flow of healing agents to the crack site. The morphological investigation of the crack site was performed using field emission scanning electron microscopy (FESEM), showing the difference between the samples depending on the used solvent. The software analysis of sample photographs has been performed by calculating the fractured/healed surface area of the samples, revealing that approximately 20% of the volume was affected by the impact. Fourier transform infrared spectroscopy (FTIR) revealed that poly (dicyclopentadiene) (PDCPD) formed at the healed interface. However, the FTIR investigation of catalyst stability in different solvents showed structural changes in GC and partial deactivation. The mechanical tests of the samples showed that a recovery of 60% after 24 h at room temperature could be achieved through the use of a solvent and very low concentration of GC. The performed research results are a good base to develop the model for predicting the processes and morphology, with the goal to design the final mechanical and in the future, thermal, properties in advance. This opens a new direction for future research in the field of composite healing.
PB  - Elsevier Science Sa, Lausanne
T2  - Materials Chemistry and Physics
T1  - Solvent effects on structural changes in self-healing epoxy composites
VL  - 256
DO  - 10.1016/j.matchemphys.2020.123761
ER  - 

@article{
author = "Radović, Ivana and Stajčić, Aleksandar and Radisavljević, Anđela and Veljković, Filip M. and Čebela, Maria and Mitić, Vojislav V. and Radojević, Vesna",
year = "2020",
abstract = "Nowadays, there is a very high importance of composite research and variety of their applications in the modern world. In that sense, we researched hollow glass capillaries filled with dissolved Grubbs catalyst (GC) and dicyclopentadiene (DCPD) were incorporated into a fiber-reinforced epoxy with the aim of improving the flow of healing agents to the crack site. The morphological investigation of the crack site was performed using field emission scanning electron microscopy (FESEM), showing the difference between the samples depending on the used solvent. The software analysis of sample photographs has been performed by calculating the fractured/healed surface area of the samples, revealing that approximately 20% of the volume was affected by the impact. Fourier transform infrared spectroscopy (FTIR) revealed that poly (dicyclopentadiene) (PDCPD) formed at the healed interface. However, the FTIR investigation of catalyst stability in different solvents showed structural changes in GC and partial deactivation. The mechanical tests of the samples showed that a recovery of 60% after 24 h at room temperature could be achieved through the use of a solvent and very low concentration of GC. The performed research results are a good base to develop the model for predicting the processes and morphology, with the goal to design the final mechanical and in the future, thermal, properties in advance. This opens a new direction for future research in the field of composite healing.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Materials Chemistry and Physics",
title = "Solvent effects on structural changes in self-healing epoxy composites",
volume = "256",
doi = "10.1016/j.matchemphys.2020.123761"
}

Radović, I., Stajčić, A., Radisavljević, A., Veljković, F. M., Čebela, M., Mitić, V. V.,& Radojević, V.. (2020). Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics
Elsevier Science Sa, Lausanne., 256.
https://doi.org/10.1016/j.matchemphys.2020.123761

Radović I, Stajčić A, Radisavljević A, Veljković FM, Čebela M, Mitić VV, Radojević V. Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics. 2020;256.
doi:10.1016/j.matchemphys.2020.123761 .

Radović, Ivana, Stajčić, Aleksandar, Radisavljević, Anđela, Veljković, Filip M., Čebela, Maria, Mitić, Vojislav V., Radojević, Vesna, "Solvent effects on structural changes in self-healing epoxy composites" in Materials Chemistry and Physics, 256 (2020),
https://doi.org/10.1016/j.matchemphys.2020.123761 . .

TY  - JOUR
AU  - Ćurčić, Milica
AU  - Hadžić, Branka
AU  - Gilić, Martina
AU  - Radojević, Vesna
AU  - Bjelajac, Anđelika
AU  - Radović, Ivana
AU  - Timotijević, Dejan
AU  - Romčević, Maja J.
AU  - Trajić, Jelena
AU  - Romčević, Nebojša Ž.
PY  - 2020
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4459
AB  - The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite.
PB  - Elsevier, Amsterdam
T2  - Physica E-Low-Dimensional Systems & Nanostructures
T1  - Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites
VL  - 115
DO  - 10.1016/j.physe.2019.113708
ER  - 

@article{
author = "Ćurčić, Milica and Hadžić, Branka and Gilić, Martina and Radojević, Vesna and Bjelajac, Anđelika and Radović, Ivana and Timotijević, Dejan and Romčević, Maja J. and Trajić, Jelena and Romčević, Nebojša Ž.",
year = "2020",
abstract = "The polymer nanocomposite ZnS/Poly (methylmethacrylate) was prepared by the solution casting method and its structural and optical properties were investigated using XRD, SEM, TEM, HRTEM, and Raman spectroscopy. The basic material, ZnS, has the cubic structure and its crystallite size was estimated to be 2.3 nm, which implies that a strong confinement regime is in effect. Analysis of Raman spectra was performed using the fitting procedure based on effective medium theory. As a result, the surface optical phonon (SOP) mode was detected. It was found that the shape and position of the SOP mode depend on the type of the composite.",
publisher = "Elsevier, Amsterdam",
journal = "Physica E-Low-Dimensional Systems & Nanostructures",
title = "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites",
volume = "115",
doi = "10.1016/j.physe.2019.113708"
}

Ćurčić, M., Hadžić, B., Gilić, M., Radojević, V., Bjelajac, A., Radović, I., Timotijević, D., Romčević, M. J., Trajić, J.,& Romčević, N. Ž.. (2020). Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E-Low-Dimensional Systems & Nanostructures
Elsevier, Amsterdam., 115.
https://doi.org/10.1016/j.physe.2019.113708

Ćurčić M, Hadžić B, Gilić M, Radojević V, Bjelajac A, Radović I, Timotijević D, Romčević MJ, Trajić J, Romčević NŽ. Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites. in Physica E-Low-Dimensional Systems & Nanostructures. 2020;115.
doi:10.1016/j.physe.2019.113708 .

Ćurčić, Milica, Hadžić, Branka, Gilić, Martina, Radojević, Vesna, Bjelajac, Anđelika, Radović, Ivana, Timotijević, Dejan, Romčević, Maja J., Trajić, Jelena, Romčević, Nebojša Ž., "Surface optical phonon (SOP) mode in ZnS/Poly (methylmethacrylate) nanocomposites" in Physica E-Low-Dimensional Systems & Nanostructures, 115 (2020),
https://doi.org/10.1016/j.physe.2019.113708 . .

TY  - JOUR
AU  - Elmadani, A. A.
AU  - Radović, Ivana
AU  - Tomić, Nataša
AU  - Petrović, Miloš
AU  - Stojanović, Dušica
AU  - Jančić-Heinemann, Radmila
AU  - Radojević, Vesna
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4125
AB  - The processing and characterization of hybrid PMMA resin composites with nano-zirconia (ZrO2) and electrospun polystyrene (PS) polymer fibers were presented in this study. Reinforcement was selected with the intention to tune the physical and mechanical properties of the hybrid composite. Surface modification of inorganic particles was performed in order to improve the adhesion of reinforcement to the matrix. Fourier transform infrared spectroscopy (FTIR) provided successful modification of zirconia nanoparticles with 3-Methacryloxypropyltrimethoxysilane (MEMO) and bonding improvement between incompatible inorganic nanoparticles and PMMA matrix. Considerable deagglomeration of nanoparticles in the matrix occurred after the modification has been revealed by scanning electron microscopy (SEM). Microhardness increased with the concentration of modified nanoparticles, while the fibers were the modifier that lowers hardness and promotes toughness of hybrid composites. Impact test displayed increased absorbed energy after the PS electrospun fibers had been embedded. The optimized composition of the hybrid was determined and a good balance of thermal and mechanical properties was achieved.
PB  - Public Library Science, San Francisco
T2  - PLoS One
T1  - Hybrid denture acrylic composites with nanozirconia and electrospun polystyrene fibers
IS  - 12
VL  - 14
DO  - 10.1371/journal.pone.0226528
ER  - 

@article{
author = "Elmadani, A. A. and Radović, Ivana and Tomić, Nataša and Petrović, Miloš and Stojanović, Dušica and Jančić-Heinemann, Radmila and Radojević, Vesna",
year = "2019",
abstract = "The processing and characterization of hybrid PMMA resin composites with nano-zirconia (ZrO2) and electrospun polystyrene (PS) polymer fibers were presented in this study. Reinforcement was selected with the intention to tune the physical and mechanical properties of the hybrid composite. Surface modification of inorganic particles was performed in order to improve the adhesion of reinforcement to the matrix. Fourier transform infrared spectroscopy (FTIR) provided successful modification of zirconia nanoparticles with 3-Methacryloxypropyltrimethoxysilane (MEMO) and bonding improvement between incompatible inorganic nanoparticles and PMMA matrix. Considerable deagglomeration of nanoparticles in the matrix occurred after the modification has been revealed by scanning electron microscopy (SEM). Microhardness increased with the concentration of modified nanoparticles, while the fibers were the modifier that lowers hardness and promotes toughness of hybrid composites. Impact test displayed increased absorbed energy after the PS electrospun fibers had been embedded. The optimized composition of the hybrid was determined and a good balance of thermal and mechanical properties was achieved.",
publisher = "Public Library Science, San Francisco",
journal = "PLoS One",
title = "Hybrid denture acrylic composites with nanozirconia and electrospun polystyrene fibers",
number = "12",
volume = "14",
doi = "10.1371/journal.pone.0226528"
}

Elmadani, A. A., Radović, I., Tomić, N., Petrović, M., Stojanović, D., Jančić-Heinemann, R.,& Radojević, V.. (2019). Hybrid denture acrylic composites with nanozirconia and electrospun polystyrene fibers. in PLoS One
Public Library Science, San Francisco., 14(12).
https://doi.org/10.1371/journal.pone.0226528

Elmadani AA, Radović I, Tomić N, Petrović M, Stojanović D, Jančić-Heinemann R, Radojević V. Hybrid denture acrylic composites with nanozirconia and electrospun polystyrene fibers. in PLoS One. 2019;14(12).
doi:10.1371/journal.pone.0226528 .

Elmadani, A. A., Radović, Ivana, Tomić, Nataša, Petrović, Miloš, Stojanović, Dušica, Jančić-Heinemann, Radmila, Radojević, Vesna, "Hybrid denture acrylic composites with nanozirconia and electrospun polystyrene fibers" in PLoS One, 14, no. 12 (2019),
https://doi.org/10.1371/journal.pone.0226528 . .

TY  - JOUR
AU  - Abozaid, Rouaida Mohamed
AU  - Lazarević, Zorica Ž.
AU  - Radović, Ivana
AU  - Gilić, Martina
AU  - Sević, Dragutin M.
AU  - Rabasović, Maja S.
AU  - Radojević, Vesna
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4225
AB  - Processing and characterization of polymer nanocomposites based on poly (methyl methacrylate) (PMMA) matrix with embedded core-shell CdSe/ZnS quantum dots (QD's) were presented in this work. The aim is to preserve the optical activity of QD's in nanocomposite processing with improved mechanical properties. The modification of QD's CdSe/ZnS-PMMA interface was achieved with 3-mercaptopropyltrimethoxysilane (MPTMS). Nanocomposites were processed by solution casting. The samples of pure PMMA, and composites with unmodified and silane modified QD's CdSe/ZnS were processed. FTIR analysis revealed modification of QD's with silane and characteristic bonding with PMMA matrix. Raman spectrum confirms a presence of alloyed layer at the core-shell interface. Time-resolved laser induced fluorescence measurements confirmed slight blue shift in QD's CdSe/ZnS-PMMA composite without interface modification, while there was a slight red shift with modified particles. Oxidation effects in quantum dots were removed with the use of PMMA as a host, and the core remained active, which was confirmed with FTIR analysis and time-resolved laser induced fluorescence measurements.
PB  - Elsevier Science Bv, Amsterdam
T2  - Optical Materials
T1  - Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications
EP  - 410
SP  - 405
VL  - 92
DO  - 10.1016/j.optmat.2019.05.012
ER  - 

@article{
author = "Abozaid, Rouaida Mohamed and Lazarević, Zorica Ž. and Radović, Ivana and Gilić, Martina and Sević, Dragutin M. and Rabasović, Maja S. and Radojević, Vesna",
year = "2019",
abstract = "Processing and characterization of polymer nanocomposites based on poly (methyl methacrylate) (PMMA) matrix with embedded core-shell CdSe/ZnS quantum dots (QD's) were presented in this work. The aim is to preserve the optical activity of QD's in nanocomposite processing with improved mechanical properties. The modification of QD's CdSe/ZnS-PMMA interface was achieved with 3-mercaptopropyltrimethoxysilane (MPTMS). Nanocomposites were processed by solution casting. The samples of pure PMMA, and composites with unmodified and silane modified QD's CdSe/ZnS were processed. FTIR analysis revealed modification of QD's with silane and characteristic bonding with PMMA matrix. Raman spectrum confirms a presence of alloyed layer at the core-shell interface. Time-resolved laser induced fluorescence measurements confirmed slight blue shift in QD's CdSe/ZnS-PMMA composite without interface modification, while there was a slight red shift with modified particles. Oxidation effects in quantum dots were removed with the use of PMMA as a host, and the core remained active, which was confirmed with FTIR analysis and time-resolved laser induced fluorescence measurements.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Optical Materials",
title = "Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications",
pages = "410-405",
volume = "92",
doi = "10.1016/j.optmat.2019.05.012"
}

Abozaid, R. M., Lazarević, Z. Ž., Radović, I., Gilić, M., Sević, D. M., Rabasović, M. S.,& Radojević, V.. (2019). Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications. in Optical Materials
Elsevier Science Bv, Amsterdam., 92, 405-410.
https://doi.org/10.1016/j.optmat.2019.05.012

Abozaid RM, Lazarević ZŽ, Radović I, Gilić M, Sević DM, Rabasović MS, Radojević V. Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications. in Optical Materials. 2019;92:405-410.
doi:10.1016/j.optmat.2019.05.012 .

Abozaid, Rouaida Mohamed, Lazarević, Zorica Ž., Radović, Ivana, Gilić, Martina, Sević, Dragutin M., Rabasović, Maja S., Radojević, Vesna, "Optical properties and fluorescence of quantum dots CdSe/ZnS-PMMA composite films with interface modifications" in Optical Materials, 92 (2019):405-410,
https://doi.org/10.1016/j.optmat.2019.05.012 . .

TY  - JOUR
AU  - Elmadani, A. A.
AU  - Tomić, Nataša
AU  - Radović, Ivana
AU  - Vuksanović, Marija M.
AU  - Stojanović, Dušica
AU  - Jančić-Heinemann, Radmila
AU  - Radojević, Vesna
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4044
AB  - To obtain flakes like zirconia particles at relatively low temperature, the synthesis method for producing zirconia particles on the surface of salt particles that serve as a template is examined. The produced particles are incorporated as reinforcement in the poly(methyl methacrylate) matrix to obtain a composite material. The particles were characterized by the X-ray diffraction, Fourier-transform infrared spectroscopy, and image analysis. The morphology of the particles and composites was examined using a field emission scanning electron microscope. Composites prepared with synthesized particles were compared to those containing commercial zirconia particles to estimate the possibility of use of synthesized particles as reinforcement. The influence of the 1 wt% of zirconia particles in composite material on the mechanical properties was studied using microhardness measurements and dynamic mechanical analysis. The results obtained show that the addition of 1 wt% of zirconia particles increases the mechanical properties of the composite relative to the pure polymer matrix.
PB  - Sage Publications Ltd, London
T2  - Advanced Composites Letters
T1  - Salt template zirconia reinforcing particles as possible reinforcement for PMMA matrix composite
VL  - 28
DO  - 10.1177/0963693519879696
ER  - 

@article{
author = "Elmadani, A. A. and Tomić, Nataša and Radović, Ivana and Vuksanović, Marija M. and Stojanović, Dušica and Jančić-Heinemann, Radmila and Radojević, Vesna",
year = "2019",
abstract = "To obtain flakes like zirconia particles at relatively low temperature, the synthesis method for producing zirconia particles on the surface of salt particles that serve as a template is examined. The produced particles are incorporated as reinforcement in the poly(methyl methacrylate) matrix to obtain a composite material. The particles were characterized by the X-ray diffraction, Fourier-transform infrared spectroscopy, and image analysis. The morphology of the particles and composites was examined using a field emission scanning electron microscope. Composites prepared with synthesized particles were compared to those containing commercial zirconia particles to estimate the possibility of use of synthesized particles as reinforcement. The influence of the 1 wt% of zirconia particles in composite material on the mechanical properties was studied using microhardness measurements and dynamic mechanical analysis. The results obtained show that the addition of 1 wt% of zirconia particles increases the mechanical properties of the composite relative to the pure polymer matrix.",
publisher = "Sage Publications Ltd, London",
journal = "Advanced Composites Letters",
title = "Salt template zirconia reinforcing particles as possible reinforcement for PMMA matrix composite",
volume = "28",
doi = "10.1177/0963693519879696"
}

Elmadani, A. A., Tomić, N., Radović, I., Vuksanović, M. M., Stojanović, D., Jančić-Heinemann, R.,& Radojević, V.. (2019). Salt template zirconia reinforcing particles as possible reinforcement for PMMA matrix composite. in Advanced Composites Letters
Sage Publications Ltd, London., 28.
https://doi.org/10.1177/0963693519879696

Elmadani AA, Tomić N, Radović I, Vuksanović MM, Stojanović D, Jančić-Heinemann R, Radojević V. Salt template zirconia reinforcing particles as possible reinforcement for PMMA matrix composite. in Advanced Composites Letters. 2019;28.
doi:10.1177/0963693519879696 .

Elmadani, A. A., Tomić, Nataša, Radović, Ivana, Vuksanović, Marija M., Stojanović, Dušica, Jančić-Heinemann, Radmila, Radojević, Vesna, "Salt template zirconia reinforcing particles as possible reinforcement for PMMA matrix composite" in Advanced Composites Letters, 28 (2019),
https://doi.org/10.1177/0963693519879696 . .

TY  - JOUR
AU  - Stajčić, Aleksandar
AU  - Radović, Ivana
AU  - Ćosović, Vladan
AU  - Grujić, Aleksandar
AU  - Stajić-Trošić, Jasna
AU  - Jančić-Heinemann, Radmila
PY  - 2019
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/4131
AB  - This study presents preparation and characterization of ethyl cellulose based nanocomposites. Successful use of simple solvent casting technique provided nanocomposites with high loads of barium ferrite magnetic nanopowder in the polymer matrix, promising significant improvement of mechanical properties. Investigation of morphology revealed formation of agglomerates that are still on nanoscopic level. Nanocomposite thin films with a higher content of the magnetic powder showed substantial enhancement of break strength, elongation and microhardness compared to the pure ethyl cellulose, which was the primary aim of this research.
PB  - Međunarodni Institut za nauku o sinterovanju, Beograd
T2  - Science of Sintering
T1  - The Influence of Barium Ferrite Nanoparticles on Morphological and Mechanical Properties of Ethyl Cellulose Based Nanocomposites
EP  - 283
IS  - 3
SP  - 277
VL  - 51
DO  - 10.2298/SOS1903277S
ER  - 

@article{
author = "Stajčić, Aleksandar and Radović, Ivana and Ćosović, Vladan and Grujić, Aleksandar and Stajić-Trošić, Jasna and Jančić-Heinemann, Radmila",
year = "2019",
abstract = "This study presents preparation and characterization of ethyl cellulose based nanocomposites. Successful use of simple solvent casting technique provided nanocomposites with high loads of barium ferrite magnetic nanopowder in the polymer matrix, promising significant improvement of mechanical properties. Investigation of morphology revealed formation of agglomerates that are still on nanoscopic level. Nanocomposite thin films with a higher content of the magnetic powder showed substantial enhancement of break strength, elongation and microhardness compared to the pure ethyl cellulose, which was the primary aim of this research.",
publisher = "Međunarodni Institut za nauku o sinterovanju, Beograd",
journal = "Science of Sintering",
title = "The Influence of Barium Ferrite Nanoparticles on Morphological and Mechanical Properties of Ethyl Cellulose Based Nanocomposites",
pages = "283-277",
number = "3",
volume = "51",
doi = "10.2298/SOS1903277S"
}

Stajčić, A., Radović, I., Ćosović, V., Grujić, A., Stajić-Trošić, J.,& Jančić-Heinemann, R.. (2019). The Influence of Barium Ferrite Nanoparticles on Morphological and Mechanical Properties of Ethyl Cellulose Based Nanocomposites. in Science of Sintering
Međunarodni Institut za nauku o sinterovanju, Beograd., 51(3), 277-283.
https://doi.org/10.2298/SOS1903277S

Stajčić A, Radović I, Ćosović V, Grujić A, Stajić-Trošić J, Jančić-Heinemann R. The Influence of Barium Ferrite Nanoparticles on Morphological and Mechanical Properties of Ethyl Cellulose Based Nanocomposites. in Science of Sintering. 2019;51(3):277-283.
doi:10.2298/SOS1903277S .

Stajčić, Aleksandar, Radović, Ivana, Ćosović, Vladan, Grujić, Aleksandar, Stajić-Trošić, Jasna, Jančić-Heinemann, Radmila, "The Influence of Barium Ferrite Nanoparticles on Morphological and Mechanical Properties of Ethyl Cellulose Based Nanocomposites" in Science of Sintering, 51, no. 3 (2019):277-283,
https://doi.org/10.2298/SOS1903277S . .

TY  - JOUR
AU  - Yerro, Omar
AU  - Radojević, Vesna
AU  - Radović, Ivana
AU  - Kojović, Aleksandar
AU  - Uskoković, Petar
AU  - Stojanović, Dušica
AU  - Aleksić, Radoslav
PY  - 2016
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/3247
AB  - The acrylic resin reinforced with silanized alumina whiskers with self-healing (SH) agents was synthesized. The self-healing system consisted of microcapsules with the healing agent dicyclopentadiene (DCPD) and modified Grubbs' catalyst in PS electrospun nanofibers. The content of alumina whiskers was 3% w/w, and the concentration of PS fibers and OF microcapsules in the samples were 1% wow each. The embedded silanized alumina whiskers achieved higher T-g and absorbed impact energy in relation to unmodified alumina whiskers. The nanoindentation test revealed the reduced modulus increased for about 65% and hardness increased is about 90% for composites with silanized whiskers. Cracks were induced on the composite surface using the low energy impact test machine. The self-healing efficiency of 74% was approved by the repeated impact test after 96 h.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers
EP  - 10786
IS  - 9
SP  - 10779
VL  - 42
DO  - 10.1016/j.ceramint.2016.03.205
ER  - 

@article{
author = "Yerro, Omar and Radojević, Vesna and Radović, Ivana and Kojović, Aleksandar and Uskoković, Petar and Stojanović, Dušica and Aleksić, Radoslav",
year = "2016",
abstract = "The acrylic resin reinforced with silanized alumina whiskers with self-healing (SH) agents was synthesized. The self-healing system consisted of microcapsules with the healing agent dicyclopentadiene (DCPD) and modified Grubbs' catalyst in PS electrospun nanofibers. The content of alumina whiskers was 3% w/w, and the concentration of PS fibers and OF microcapsules in the samples were 1% wow each. The embedded silanized alumina whiskers achieved higher T-g and absorbed impact energy in relation to unmodified alumina whiskers. The nanoindentation test revealed the reduced modulus increased for about 65% and hardness increased is about 90% for composites with silanized whiskers. Cracks were induced on the composite surface using the low energy impact test machine. The self-healing efficiency of 74% was approved by the repeated impact test after 96 h.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers",
pages = "10786-10779",
number = "9",
volume = "42",
doi = "10.1016/j.ceramint.2016.03.205"
}

Yerro, O., Radojević, V., Radović, I., Kojović, A., Uskoković, P., Stojanović, D.,& Aleksić, R.. (2016). Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers. in Ceramics International
Elsevier Sci Ltd, Oxford., 42(9), 10779-10786.
https://doi.org/10.1016/j.ceramint.2016.03.205

Yerro O, Radojević V, Radović I, Kojović A, Uskoković P, Stojanović D, Aleksić R. Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers. in Ceramics International. 2016;42(9):10779-10786.
doi:10.1016/j.ceramint.2016.03.205 .

Yerro, Omar, Radojević, Vesna, Radović, Ivana, Kojović, Aleksandar, Uskoković, Petar, Stojanović, Dušica, Aleksić, Radoslav, "Enhanced thermo-mechanical properties of acrylic resin reinforced with silanized alumina whiskers" in Ceramics International, 42, no. 9 (2016):10779-10786,
https://doi.org/10.1016/j.ceramint.2016.03.205 . .

TY  - JOUR
AU  - Dukali, Ramdan M.
AU  - Radović, Ivana M.
AU  - Stojanović, Dušica
AU  - Sević, Dragutin M.
AU  - Radojević, Vesna
AU  - Jocić, Dragan
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2693
AB  - The electrospinning of rhodamine B (RhB)-doped poly(methyl methacrylate) (PMMA) is presented as a promising technique for processing photoluminescent nanofibers. Nanofibers with concentrations of RhB in PMMA between 0.05 and 2.0 wt. % were studied. The FTIR spectrum, fiber morphology, thermal properties and optical properties of the nanofibers were investigated. Smooth, bead-free and nonporous nanofibers were obtained. Differential scanning calorimetry (DSC) results revealed that the glass transition temperature of the PMMA (T-g) increased with the increasing of RhB content up to 0.5 wt. % and thereafter decreased. The laser induced fluorescence (LIF) technique was used to study the fluorescence properties of the nanofibers. The maximum fluorescence emission was observed at a concentration of RhB of 0.2 wt. %.
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of the Serbian Chemical Society
T1  - Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers
EP  - 880
IS  - 7
SP  - 867
VL  - 79
DO  - 10.2298/JSC131014011D
ER  - 

@article{
author = "Dukali, Ramdan M. and Radović, Ivana M. and Stojanović, Dušica and Sević, Dragutin M. and Radojević, Vesna and Jocić, Dragan and Aleksić, Radoslav",
year = "2014",
abstract = "The electrospinning of rhodamine B (RhB)-doped poly(methyl methacrylate) (PMMA) is presented as a promising technique for processing photoluminescent nanofibers. Nanofibers with concentrations of RhB in PMMA between 0.05 and 2.0 wt. % were studied. The FTIR spectrum, fiber morphology, thermal properties and optical properties of the nanofibers were investigated. Smooth, bead-free and nonporous nanofibers were obtained. Differential scanning calorimetry (DSC) results revealed that the glass transition temperature of the PMMA (T-g) increased with the increasing of RhB content up to 0.5 wt. % and thereafter decreased. The laser induced fluorescence (LIF) technique was used to study the fluorescence properties of the nanofibers. The maximum fluorescence emission was observed at a concentration of RhB of 0.2 wt. %.",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of the Serbian Chemical Society",
title = "Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers",
pages = "880-867",
number = "7",
volume = "79",
doi = "10.2298/JSC131014011D"
}

Dukali, R. M., Radović, I. M., Stojanović, D., Sević, D. M., Radojević, V., Jocić, D.,& Aleksić, R.. (2014). Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers. in Journal of the Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 79(7), 867-880.
https://doi.org/10.2298/JSC131014011D

Dukali RM, Radović IM, Stojanović D, Sević DM, Radojević V, Jocić D, Aleksić R. Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers. in Journal of the Serbian Chemical Society. 2014;79(7):867-880.
doi:10.2298/JSC131014011D .

Dukali, Ramdan M., Radović, Ivana M., Stojanović, Dušica, Sević, Dragutin M., Radojević, Vesna, Jocić, Dragan, Aleksić, Radoslav, "Electrospinning of the laser dye rhodamine B-doped poly(methyl methacrylate) nanofibers" in Journal of the Serbian Chemical Society, 79, no. 7 (2014):867-880,
https://doi.org/10.2298/JSC131014011D . .

TY  - JOUR
AU  - Radović, Ivana M.
AU  - Dukali, Radman A.
AU  - Yerro, Omar
AU  - Stojanović, Dušica
AU  - Uskoković, Petar
AU  - Radojević, Vesna
AU  - Aleksić, Radoslav
PY  - 2014
UR  - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/2593
AB  - In this paper the process of electrospinning of PMMA nanofibers was investigated. The influence of process parameters (type of solvent, solution concentration, flow rate, distance of needle and collector) on the nanofibers diameter uniformity and porosity was investigated. Characterization of obtained samples was performed by FTIR, DSC, SEM and Image-pro picture analisys. The optimal process parameters were defined.
AB  - U okviru ovog rada ispitivana je mogućnost dobijanja poli-(metilmetakrilat)nih (PMMA) vlakana metodom elektropredenja (electrosinning.) Primenom različitih procesnih parametara (rastvarača, koncentracije rastvora, protoka rastvora i rastojanja izmenu vrha igle i kolektora bilo je moguće ispitati uticaj ovih parametara na ravnomernost prečnika i kvalitet dobijenih vlakana. Karakterizacija dobijenih vlakana izvedena je primenom FTIR metode, DSC metode, skenirajuće elektronske mikroskopije (SEM) i metodom analize slike Image-pro. Na ovaj našin odreneni su najoptimalniji procesni parametri za dobijanje nanovlakana ravnomernog prečnika i bez poroznosti.
PB  - Savez inženjera i tehničara Srbije, Beograd
T2  - Tehnika
T1  - Infuence of solvent on the stability of electrospinning of PMMA nanofibers
T1  - Uticaj rastvarača na stabilnost procesa elektropredenja polimernih nanovlakana
EP  - 23
IS  - 1
SP  - 19
VL  - 69
DO  - 10.5937/tehnika1401019R
ER  - 

@article{
author = "Radović, Ivana M. and Dukali, Radman A. and Yerro, Omar and Stojanović, Dušica and Uskoković, Petar and Radojević, Vesna and Aleksić, Radoslav",
year = "2014",
abstract = "In this paper the process of electrospinning of PMMA nanofibers was investigated. The influence of process parameters (type of solvent, solution concentration, flow rate, distance of needle and collector) on the nanofibers diameter uniformity and porosity was investigated. Characterization of obtained samples was performed by FTIR, DSC, SEM and Image-pro picture analisys. The optimal process parameters were defined., U okviru ovog rada ispitivana je mogućnost dobijanja poli-(metilmetakrilat)nih (PMMA) vlakana metodom elektropredenja (electrosinning.) Primenom različitih procesnih parametara (rastvarača, koncentracije rastvora, protoka rastvora i rastojanja izmenu vrha igle i kolektora bilo je moguće ispitati uticaj ovih parametara na ravnomernost prečnika i kvalitet dobijenih vlakana. Karakterizacija dobijenih vlakana izvedena je primenom FTIR metode, DSC metode, skenirajuće elektronske mikroskopije (SEM) i metodom analize slike Image-pro. Na ovaj našin odreneni su najoptimalniji procesni parametri za dobijanje nanovlakana ravnomernog prečnika i bez poroznosti.",
publisher = "Savez inženjera i tehničara Srbije, Beograd",
journal = "Tehnika",
title = "Infuence of solvent on the stability of electrospinning of PMMA nanofibers, Uticaj rastvarača na stabilnost procesa elektropredenja polimernih nanovlakana",
pages = "23-19",
number = "1",
volume = "69",
doi = "10.5937/tehnika1401019R"
}

Radović, I. M., Dukali, R. A., Yerro, O., Stojanović, D., Uskoković, P., Radojević, V.,& Aleksić, R.. (2014). Infuence of solvent on the stability of electrospinning of PMMA nanofibers. in Tehnika
Savez inženjera i tehničara Srbije, Beograd., 69(1), 19-23.
https://doi.org/10.5937/tehnika1401019R

Radović IM, Dukali RA, Yerro O, Stojanović D, Uskoković P, Radojević V, Aleksić R. Infuence of solvent on the stability of electrospinning of PMMA nanofibers. in Tehnika. 2014;69(1):19-23.
doi:10.5937/tehnika1401019R .

Radović, Ivana M., Dukali, Radman A., Yerro, Omar, Stojanović, Dušica, Uskoković, Petar, Radojević, Vesna, Aleksić, Radoslav, "Infuence of solvent on the stability of electrospinning of PMMA nanofibers" in Tehnika, 69, no. 1 (2014):19-23,
https://doi.org/10.5937/tehnika1401019R . .