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Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites

Epoxy resin was grafted to graphene oxide (GO) via esterification reaction and 3D structure hybrids were prepared by combining 1D carbon nanotube (CNT) and 2D functionalized GO through π-stacking interaction. Epoxy composites filled with 3D structure hybrids were fabricated. The results show that fu...

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Detalles Bibliográficos
Autores principales: Qi, Zehao, Tan, Yefa, Zhang, Zhongwei, Gao, Li, Zhang, Cuiping, Tian, Jin
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090624/
https://www.ncbi.nlm.nih.gov/pubmed/35559100
http://dx.doi.org/10.1039/c8ra08312f
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author Qi, Zehao
Tan, Yefa
Zhang, Zhongwei
Gao, Li
Zhang, Cuiping
Tian, Jin
author_facet Qi, Zehao
Tan, Yefa
Zhang, Zhongwei
Gao, Li
Zhang, Cuiping
Tian, Jin
author_sort Qi, Zehao
collection PubMed
description Epoxy resin was grafted to graphene oxide (GO) via esterification reaction and 3D structure hybrids were prepared by combining 1D carbon nanotube (CNT) and 2D functionalized GO through π-stacking interaction. Epoxy composites filled with 3D structure hybrids were fabricated. The results show that functionalized GO effectively improves the dispersibility of CNTs in epoxy matrix due to good compatibility. Excellent mechanical properties were achieved by epoxy composites filled with 3D structure hybrids. The fracture surface analysis indicated improved interfacial interaction between 3D structure hybrids and epoxy matrix, which may due to the covalent bonding formed between the epoxy molecular chain grafted on EGO and the hardener agent during the curing process. In the 3D structure filler network, the mechanisms of crack deflection/bifurcation induced by functionalized GO make the crack path tortuous, which causes the cracks to encounter more CNTs and then promote the mechanisms of CNT fracture and crack bridging, resulting in more energy dissipation. This is the key mechanism for its excellent reinforcing and toughening effects.
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spelling pubmed-90906242022-05-11 Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites Qi, Zehao Tan, Yefa Zhang, Zhongwei Gao, Li Zhang, Cuiping Tian, Jin RSC Adv Chemistry Epoxy resin was grafted to graphene oxide (GO) via esterification reaction and 3D structure hybrids were prepared by combining 1D carbon nanotube (CNT) and 2D functionalized GO through π-stacking interaction. Epoxy composites filled with 3D structure hybrids were fabricated. The results show that functionalized GO effectively improves the dispersibility of CNTs in epoxy matrix due to good compatibility. Excellent mechanical properties were achieved by epoxy composites filled with 3D structure hybrids. The fracture surface analysis indicated improved interfacial interaction between 3D structure hybrids and epoxy matrix, which may due to the covalent bonding formed between the epoxy molecular chain grafted on EGO and the hardener agent during the curing process. In the 3D structure filler network, the mechanisms of crack deflection/bifurcation induced by functionalized GO make the crack path tortuous, which causes the cracks to encounter more CNTs and then promote the mechanisms of CNT fracture and crack bridging, resulting in more energy dissipation. This is the key mechanism for its excellent reinforcing and toughening effects. The Royal Society of Chemistry 2018-11-16 /pmc/articles/PMC9090624/ /pubmed/35559100 http://dx.doi.org/10.1039/c8ra08312f Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Qi, Zehao
Tan, Yefa
Zhang, Zhongwei
Gao, Li
Zhang, Cuiping
Tian, Jin
Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites
title Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites
title_full Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites
title_fullStr Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites
title_full_unstemmed Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites
title_short Synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites
title_sort synergistic effect of functionalized graphene oxide and carbon nanotube hybrids on mechanical properties of epoxy composites
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9090624/
https://www.ncbi.nlm.nih.gov/pubmed/35559100
http://dx.doi.org/10.1039/c8ra08312f
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