TY - JOUR
T1 - Mechanical properties of epoxy composites filled with silane-functionalized graphene oxide
AU - Wan, Yan Jun
AU - Gong, Li Xiu
AU - Tang, Long Cheng
AU - Wu, Lian Bin
AU - Jiang, Jian Xiong
N1 - Funding Information:
This project is jointly supported by the National Natural Science Foundation of China (No. 51203038 ), the Starting Scholar Foundation of Hangzhou Normal University (No. 2012QDL022 ) and the International Science and Technology Cooperation Foundation of Zhejiang Province ( 2013C24020 ).
Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2014/9
Y1 - 2014/9
N2 - In this work, the effects of as-produced GO and silane functionalized GO (silane-f-GO) loading and silane functionalization on the mechanical properties of epoxy composites are investigated and compared. Such silane functionalization containing epoxy ended-groups is found to effectively improve the compatibility between the silane-f-GO and the epoxy matrix. Increased storage modulus, glass transition temperature, thermal stability, tensile and flexural properties and fracture toughness of epoxy composites filled with the silane-f-GO sheets are observed compared with those of the neat epoxy and GO/epoxy composites. These findings confirm the improved dispersion and interfacial interaction in the composites arising from covalent bonds between the silane-f-GO and the epoxy matrix. Moreover, several possible fracture mechanisms, i.e. crack pinning/deflection, crack bridging, and matrix plastic deformation initiated by the debonding/delamination of GO sheets, were identified and evaluated.
AB - In this work, the effects of as-produced GO and silane functionalized GO (silane-f-GO) loading and silane functionalization on the mechanical properties of epoxy composites are investigated and compared. Such silane functionalization containing epoxy ended-groups is found to effectively improve the compatibility between the silane-f-GO and the epoxy matrix. Increased storage modulus, glass transition temperature, thermal stability, tensile and flexural properties and fracture toughness of epoxy composites filled with the silane-f-GO sheets are observed compared with those of the neat epoxy and GO/epoxy composites. These findings confirm the improved dispersion and interfacial interaction in the composites arising from covalent bonds between the silane-f-GO and the epoxy matrix. Moreover, several possible fracture mechanisms, i.e. crack pinning/deflection, crack bridging, and matrix plastic deformation initiated by the debonding/delamination of GO sheets, were identified and evaluated.
KW - A. Polymer-matrix composites (PMCs)
KW - B. Mechanical properties
KW - B. Microstructures
KW - E. Surface treatments
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U2 - 10.1016/j.compositesa.2014.04.023
DO - 10.1016/j.compositesa.2014.04.023
M3 - Article
AN - SCOPUS:84901449145
SN - 1359-835X
VL - 64
SP - 79
EP - 89
JO - Composites Part A: Applied Science and Manufacturing
JF - Composites Part A: Applied Science and Manufacturing
ER -