Graphene oxide (GO) was utilized as a �quasi-conductive phase� to fabricate GO/PVDF nanocomposites with promoted dielectric performance. We investigated the influence of the oxidizing degree and the lateral size of a GO sheet on the dielectric properties of the final composites. Two different procedures were employed to prepare GO, resulted in two types of GO with different oxidizing degree. In addition, we also conducted size fractionation by pH-assisted selective sedimentation and investigated its influence on the dielectric performance of resulting composites. The results show that GO sheets with higher oxidizing degree and small lateral size possess a larger percolation threshold value, and a remarkably enhanced dielectric performance of the resulting composite is achieved through the addition of GO material as compared with pure PVDF. By further optimizing the experimental parameters, we anticipate better performance may be found of this gallery of GO/PVDF composite as materials with high dielectric constant.

Graphene oxide/poly(vinylidene fluoride) nanocomposite with promoted dielectric performance

244th National Meeting (2012)

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