期刊
JOURNAL OF NANOPARTICLE RESEARCH
卷 14, 期 1, 页码 -出版社
SPRINGER
DOI: 10.1007/s11051-011-0717-0
关键词
Graphene; Cationic PMMA particles; Self-assembly; Composite
资金
- National Natural Science Foundation of China [50903070]
- Natural Science Foundation of Zhejiang Province [Y4090502, Y4090363]
- Science and Technology Innovative Research Team of Zhejiang Province [2009R50010]
- Qianjiang talent project of Zhejiang Province of China [2010R10018]
In this study, we presented a simple approach to prepare poly(methyl methacrylate) (PMMA)/graphene composites based on the self-assembly between graphene oxide (GO) sheets and cationic PMMA emulsion particles. Briefly, cationic PMMA emulsion particles were first synthesized by a soap-free emulsion polymerization process, in which methacryloyloxyethyl trimethyl ammonium chloride was used as the emulsifier, and then blended with the aqueous solution of GO. Through electrostatic attraction, the exfoliated GO sheets were tightly adhered on the PMMA particles. The GO sheets could be reduced in situ into graphene sheets by a chemical method, without the aggregation. The structure of the prepared composites and the influences of GO and graphene sheets on the properties of PMMA were investigated. Both GO and graphene sheets can increase the glass transition temperature and storage modulus of PMMA. Moreover, graphene sheets provided a more significant reinforcement effect.
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