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Solvent effects on structural changes in self-healing epoxy composites

Authorized Users Only
2020
Authors
Radović, Ivana
Stajčić, Aleksandar
Radisavljević, Andjela
Veljković, Filip
Čebela, Maria
Mitić, Vojislav V.
Radojević, Vesna
Article (Published version)
,
Elsevier
Metadata
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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.

Keywords:
Self-healing / Solvent effect / Morphological properties / Structural investigation / Mechanical properties
Source:
Materials Chemistry and Physics, 2020, 256, 123761-
Publisher:
  • Elsevier
Funding / projects:
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200026 (University of Belgrade, Institute of Chemistry, Technology and Metallurgy - IChTM) (RS-200026)
  • Ministry of Education, Science and Technological Development, Republic of Serbia, Grant no. 200017 (University of Belgrade, Institute of Nuclear Sciences 'Vinča', Belgrade-Vinča) (RS-200017)

DOI: 10.1016/j.matchemphys.2020.123761

ISSN: 0254-0584

WoS: 000582701400090

Scopus: 2-s2.0-85090002832
[ Google Scholar ]
9
2
URI
https://cer.ihtm.bg.ac.rs/handle/123456789/3676
Collections
  • Radovi istraživača / Researchers' publications
Institution/Community
IHTM
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 . .

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