Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 125, Issue -, Pages E314-E319Publisher
WILEY
DOI: 10.1002/app.35627
Keywords
films; nanocomposites; nucleation
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Funding
- Huazhong University of Science and Technology
- Colleges and universities in Hubei province the provincial teaching research project [2011065]
- National Nature Science Foundation of China [51102102]
- National Defense Key Laboratory of Ministry of Education [0196185003]
- National High Technology Research and Development Program of China [2007AA03Z120]
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Poly(vinylidene fluoride) (PVDF)graphite nanosheet (GNS) nanocomposites with different contents of GNSs were prepared by the solution-casting method. The GNSs were produced by the ultrasonic exfoliation of graphite. The effects of GNSs on the crystalline structure, degree of the crystallization, conductivity, and phase-transformation mechanism of PVDF were investigated. Atomic force microscopy data showed that the GNSs had a flake-shaped nanostructure. Fourier transform infrared spectroscopy and X-ray diffraction results revealed that a beta phase formed with the addition of GNSs, and the phase-transformation mechanism from the a phase to the beta phase of PVDF was confirmed. Differential scanning calorimetry results indicated that addition of GNSs led to an increased melting temperature and increased degree of crystallization; this implied that the GNSs acted as nucleating agents. (C) 2012 Wiley Periodicals, Inc. J Appl Polym Sci, 2012
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