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Molecular-level dispersion of graphene into epoxidized natural rubber: Morphology, interfacial interaction and mechanical reinforcement

文献类型： 外文期刊

作者： She, Xiaodong 1 ; He, Canzhong 1 ; Peng, Zheng 1 ; Kong, Lingxue 2 ;

作者机构： 1.Chinese Acad Trop Agr Sci, Agr Prod Proc Res Inst, Key Lab Trop Crop Prod Proc, Chinese Agr Minist, Zhanjiang 524001, Peoples R China

2.Deakin Univ, Inst Frontier Mat, Geelong, Vic 3216, Australia

关键词： Epoxidized natural rubber;Graphene oxide;Interfacial interaction

期刊名称：POLYMER （ 影响因子：4.43； 五年影响因子：4.186 ）

ISSN：

年卷期：

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收录情况： SCI

摘要： The interfacial interaction of composites dominates the properties of polymeric/inorganic nano-composites. Herein, epoxy and hydroxyl groups are introduced into the natural rubber (NR) molecular chains to anchor oxygenous functional groups on the surface of graphene oxide (GO) sheets and therefore enhance the interfacial interaction between GO and rubber. From the morphological observation and interaction analysis, it is found that epoxidized natural rubber (ENR) latex particles are assembled onto the surfaces of GO sheets by employing hydrogen bonding interaction as driving force. This self-assembly depresses restacking and agglomeration of GO sheets and leads to homogenous dispersion of GO within ENR matrix. The formation of hydrogen bonding interface between ENR and GO demonstrates a significant reinforcement for the ENR host. Compared with those of pure ENR, the composite with 0.7 wt% GO loading receives 87% increase in tensile strength and 8.7 fold increase in modulus at 200% elongation after static in-situ vulcanization. (C) 2014 Elsevier Ltd. All rights reserved.

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