TY  - JOUR
AU  - Radović, Ivana
AU  - Stajčić, Aleksandar
AU  - Radisavljević, Andjela
AU  - Veljković, Filip
AU  - Čebela, Maria
AU  - Mitić, Vojislav V.
AU  - Radojević, Vesna
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3676
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
T2  - Materials Chemistry and Physics
T1  - Solvent effects on structural changes in self-healing epoxy composites
VL  - 256
SP  - 123761
DO  - 10.1016/j.matchemphys.2020.123761
ER  - 

@article{
author = "Radović, Ivana and Stajčić, Aleksandar and Radisavljević, Andjela and Veljković, Filip 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",
journal = "Materials Chemistry and Physics",
title = "Solvent effects on structural changes in self-healing epoxy composites",
volume = "256",
pages = "123761",
doi = "10.1016/j.matchemphys.2020.123761"
}

Radović, I., Stajčić, A., Radisavljević, A., Veljković, F., Čebela, M., Mitić, V. V.,& Radojević, V.. (2020). Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics
Elsevier., 256, 123761.
https://doi.org/10.1016/j.matchemphys.2020.123761

Radović I, Stajčić A, Radisavljević A, Veljković F, Čebela M, Mitić VV, Radojević V. Solvent effects on structural changes in self-healing epoxy composites. in Materials Chemistry and Physics. 2020;256:123761.
doi:10.1016/j.matchemphys.2020.123761 .

Radović, Ivana, Stajčić, Aleksandar, Radisavljević, Andjela, Veljković, Filip, Čebela, Maria, Mitić, Vojislav V., Radojević, Vesna, "Solvent effects on structural changes in self-healing epoxy composites" in Materials Chemistry and Physics, 256 (2020):123761,
https://doi.org/10.1016/j.matchemphys.2020.123761 . .

TY  - JOUR
AU  - Perišić, Srđan
AU  - Vuksanović, Marija M.
AU  - Petrović, Milos
AU  - Radisavljević, Andjela
AU  - Grujić, Aleksandar
AU  - Jančić-Heinemann, Radmila
AU  - Radojević, Vesna
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3129
AB  - Hybrid composite panels of Wood-Plastic Composites (WPC) consisting of wood and
poly (methyl methacrylate) (PMMA) were reinforced with alumina particles and made by
“hot pressing” method. Alumina-based particles were made by sol-gel technique. The
particles were characterized by the X-ray diffraction (XRD). The resulting alumina particles
were modified with (3mercaptopropyl) trimethoxysilane (MPTMS), in order to obtain better
mechanical properties of the composite relative to the composite with unmodified alumina
particles. The aim of this work was to study the influence of composite structure and the
moisture absorption on bending and the impact properties of the hybrid composite. The
bending and impact tests revealed that modulus of elasticity and absorbed energy of
deformation increased with modification of alumina and slightly decrease after moisture
absorption.
AB  - Хибридни композитни панели дрво-пластика композит (ДПК) који се
састоје од дрвета и поли(метил метакрилата) (ПММА) ојачани честицама
алуминијум оксида прецесирани методом „врућег пресовања“. Честице засноване на
алуминијум оксиду направљене су сол – гел техником. Карактеризација честица
вршена је рендгенском анализом. Добијене честице алуминијум оксида модификоване
су помоћу (меркаптопропил)триметоксисилана, како би се постигла боља механичка
својства композита у односу на композит са немодификованим честицама алуминијум
оксида. Циљ овог рада је проучавање утицаја структуре хибридног композита и
апсорбоване влаге на механичка својства, савијање и контролисани удар. Тестови
савијања и удара показали су да се модул еластичности и апсорбована енергија
деформације повећава модификацијом алуминијум оксидних честица, а незнатно
самањује након апсорпције влаге.
PB  - Belgrade : Association for ETRAN Society
T2  - Science of Sintering
T1  - Impact of Alumina Particles on the Morphology and Mechanics of Hybrid Wood Plastic Composite Materials
VL  - 51
IS  - 1
SP  - 115
EP  - 124
DO  - 10.2298/SOS1901115P
ER  - 

@article{
author = "Perišić, Srđan and Vuksanović, Marija M. and Petrović, Milos and Radisavljević, Andjela and Grujić, Aleksandar and Jančić-Heinemann, Radmila and Radojević, Vesna",
year = "2019",
abstract = "Hybrid composite panels of Wood-Plastic Composites (WPC) consisting of wood and
poly (methyl methacrylate) (PMMA) were reinforced with alumina particles and made by
“hot pressing” method. Alumina-based particles were made by sol-gel technique. The
particles were characterized by the X-ray diffraction (XRD). The resulting alumina particles
were modified with (3mercaptopropyl) trimethoxysilane (MPTMS), in order to obtain better
mechanical properties of the composite relative to the composite with unmodified alumina
particles. The aim of this work was to study the influence of composite structure and the
moisture absorption on bending and the impact properties of the hybrid composite. The
bending and impact tests revealed that modulus of elasticity and absorbed energy of
deformation increased with modification of alumina and slightly decrease after moisture
absorption., Хибридни композитни панели дрво-пластика композит (ДПК) који се
састоје од дрвета и поли(метил метакрилата) (ПММА) ојачани честицама
алуминијум оксида прецесирани методом „врућег пресовања“. Честице засноване на
алуминијум оксиду направљене су сол – гел техником. Карактеризација честица
вршена је рендгенском анализом. Добијене честице алуминијум оксида модификоване
су помоћу (меркаптопропил)триметоксисилана, како би се постигла боља механичка
својства композита у односу на композит са немодификованим честицама алуминијум
оксида. Циљ овог рада је проучавање утицаја структуре хибридног композита и
апсорбоване влаге на механичка својства, савијање и контролисани удар. Тестови
савијања и удара показали су да се модул еластичности и апсорбована енергија
деформације повећава модификацијом алуминијум оксидних честица, а незнатно
самањује након апсорпције влаге.",
publisher = "Belgrade : Association for ETRAN Society",
journal = "Science of Sintering",
title = "Impact of Alumina Particles on the Morphology and Mechanics of Hybrid Wood Plastic Composite Materials",
volume = "51",
number = "1",
pages = "115-124",
doi = "10.2298/SOS1901115P"
}

Perišić, S., Vuksanović, M. M., Petrović, M., Radisavljević, A., Grujić, A., Jančić-Heinemann, R.,& Radojević, V.. (2019). Impact of Alumina Particles on the Morphology and Mechanics of Hybrid Wood Plastic Composite Materials. in Science of Sintering
Belgrade : Association for ETRAN Society., 51(1), 115-124.
https://doi.org/10.2298/SOS1901115P

Perišić S, Vuksanović MM, Petrović M, Radisavljević A, Grujić A, Jančić-Heinemann R, Radojević V. Impact of Alumina Particles on the Morphology and Mechanics of Hybrid Wood Plastic Composite Materials. in Science of Sintering. 2019;51(1):115-124.
doi:10.2298/SOS1901115P .

Perišić, Srđan, Vuksanović, Marija M., Petrović, Milos, Radisavljević, Andjela, Grujić, Aleksandar, Jančić-Heinemann, Radmila, Radojević, Vesna, "Impact of Alumina Particles on the Morphology and Mechanics of Hybrid Wood Plastic Composite Materials" in Science of Sintering, 51, no. 1 (2019):115-124,
https://doi.org/10.2298/SOS1901115P . .