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Enhanced interfacial interaction of epoxy nanocomposites with activated graphene nanosheets
Author(s) -
Deng Hui,
Wu Fan,
Chen Lei,
Xu Zhiwei,
Liu Liangsen,
Yang Caiyun,
Mai Wei,
Cheng Bowen
Publication year - 2014
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.41164
Subject(s) - epoxy , graphene , materials science , ultimate tensile strength , composite material , nanocomposite , flexural strength , chemical engineering , nanotechnology , engineering
The interfacial properties of epoxy nanocomposites reinforced by thermally exfoliated graphene nanosheets (TEG) and activated thermally exfoliated graphene nanosheets (a‐TEG) were compared. The specific surface area (SSA) of a‐TEG with well‐defined micro‐mesopore size distribution was 1000 m 2 /g, which was much higher that of TEG (550 m 2 /g). The interfacial interaction between a‐TEG and epoxy was stronger than that of TEG/epoxy owing to their higher SSA and pore size which was proved by dynamic mechanical analysis. As a result, the tensile strength of a‐TEG/epoxy was increased compared with that of TEG/epoxy for all concentrations. In particular, the tensile and flexural strength of a‐TEG/epoxy was increased up to 20 and 50% in comparison to that of TEG/epoxy at 0.05 wt % graphene, respectively. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014 , 131 , 41164.