Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/61820
Title: Mechanical and electro-mechanical properties of three-dimensional nanoporous graphene-poly(vinylidene fluoride) composites
Authors: Zheng, GP 
Jiang, ZY
Han, Z
Yang, JH
Keywords: Dynamic mechanical relaxation
Ferroelectric polymers
Mechanical properties
Nanoporous graphene
Processing technology
Issue Date: 2016
Publisher: Budapest University of Technology and Economics, Department of Polymer Engineering
Source: Express polymer letters, 2016, v. 10, no. 9, p. 730-741 How to cite?
Journal: Express polymer letters 
Abstract: Three-dimensional nanoporous graphene monoliths are utilized to prepare graphene-poly(vinylidene fluoride) nanocomposites with enhanced mechanical and electro-mechanical properties. Pre-treatment of the polymer (poly(vinylidene fluoride), PVDF) with graphene oxides (GOs) facilitates the formation of uniform and thin PVDF films with a typical thickness below 100 nm well coated at the graphene nano-sheets. Besides their excellent compressibility, ductility and mechanical strength, the nanoporous graphene-PVDF nanocomposites are found to possess high sensitivity in strain-dependent electrical conductivity. The improved mechanical and electro-mechanical properties are ascribed to the enhanced crystalline β phase in PVDF which possesses piezoelectricity. The mechanical relaxation analyses on the interfaces between graphene and PVDF reveal that the improved mechanical and electro-mechanical properties could result from the interaction between the –C=O groups in the nanoporous graphene and the –CF2 groups in PVDF, which also explains the important role of GOs in the preparation of the graphene-polymer nanocomposites with superior combined mechanical and electro-mechanical properties.
URI: http://hdl.handle.net/10397/61820
ISSN: 1788-618X
DOI: 10.3144/expresspolymlett.2016.67
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