One-step in situ ball milling synthesis of polymer-functionalized graphene nanocomposites
- 3 May 2011
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in Journal of Materials Chemistry
- Vol. 21 (24), 8626-8632
- https://doi.org/10.1039/c1jm10819k
Abstract
A one-step method for the preparation of polystyrene (PS)-functionalized graphene nanosheets, homogeneously dispersed in a PS matrix and forming electrically conductive graphene/PS nanocomposites, via in situ peeling of graphite nanoplatelets into graphene nanosheets in the presence of a PS solution, is presented in this paper. The resulting PS-functionalized graphene sheets displayed a fluff-like nano-structure. The backbones of PS stacked onto the basal plane of graphene sheets under strong π–π interactions with the grafted ratio up to 85 wt%. The chains of PS could effectively prevent the graphene sheets from aggregating and the prepared graphene/PS nanocomposites, with homogeneously dispersed mono- and few-layer graphene, exhibit an extraordinary electrical property, with a percolation threshold of about 2.7 wt%, far outstripping the starting graphite or carbon black as counterpart.Keywords
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