X. Wang, W. Y. Xing, L. Song, B. Yu, Y. Hu and G. H. Yeoh (2013) Preparation of UV-curable functionalized graphene/polyurethane acrylate nanocomposite with enhanced thermal and mechanical behaviors. Journal/Reactive &, Functional Polymers 73 854-858. [In English]
Web link: http://dx.doi.org/10.1016/j.reactfunctpolym.2013.03.003
Keywords: Graphene, Polyurethane acrylate, Nanocomposite, UV-curable, Thermo-mechanical analysis, EXFOLIATED GRAPHITE OXIDE, GRAPHENE NANOSHEETS, POLYURETHANE, DISPERSIONS, COMPOSITES
Abstract: Functionalized graphene nanosheets (f-GNSs) were synthesized by a simple covalent functionalization of graphene with 3-methacryloxypropyl trimethoxysilane (MPTES). The results from FUR, XPS and XRD showed that MPTES was successfully attached onto the surface of graphene. Functionalized graphene/polyurethane acrylate (f-GNS/PUA) nanocomposites were prepared by UV radiation of PUA with f-GNS. The onset thermal degradation temperature of f-GNS/PUA nanocomposite was increased by 16 degrees C, at an f-GNS content of 1 wt%. Meanwhile, the storage modulus and glass transition temperature of the nanocomposites were enhanced by incorporating f-GNS into the PUA. This is believed to be attributed to that the covalent functionalization of graphene can improve both the dispersion of f-GNSs in the polymer matrix and the interfacial interactions between f-GNSs and PUA. (C) 2013 Elsevier Ltd. All rights reserved.