141. From soft to strong elastomers: the role of additional crosslinkings in copolymer-grafted multiwalled carbon nanotube composite thermoplastic elastomers
writer：Feng Jiang, Yaqiong Zhang, Chu Fang, Zhongkai Wang and Zhigang Wang*
keywords：熱塑性彈性體，接枝，碳納米管
source：期刊
specific source：RSC Adv., 2014, 4, 60079-60085.
Issue time：2014年
Fabricating elastomeric materials is one of the most important branches
in current nanotechnology and composite science. The macroscopic
properties of the elastomers can be modified by adding fillers through
changing the types and degrees of crosslinkings. In this study,
copolymer-grafted multiwalled carbon nanotube composite thermoplastic
elastomers (CTPEs) have been designed, in which the grafted poly(n-butyl
acrylate-co-methyl methacrylate) (P(BA-co-MMA)) random copolymers
behave as the soft elastomer, and the homogeneously and discretely
dispersed multiwalled carbon nanotubes (MWCNTs) of low amounts provide
additional physical crosslinkings, which significantly enhance the
mechanical properties of the composite elastomers, including high
strain-hardening modulus and much improved elastic recovery. This design
concept opens a window to produce high-performance strong composite
thermoplastic elastomeric materials from soft ones through the
incorporation of rigid fillers of low amounts by a grafting strategy.