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Crystal Structure and Ferroelectric Properties of Poly(vinylidene fluoride)-Carbon nano tube Nanocomposite Film
- Authors
- Lee, Ji Seok; Kim, Gwang Ho; Kim, Woo Nyon; Oh, Kyung Hwan; Kim, Hyeong Tae; Hwang, Seung Sang; Hong, Soon Man
- Issue Date
- 2008
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- carbon nano tube; ferroelectric properties; nano-composite; poly(vinylidene fluoride)
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.491, pp.247 - 254
- Indexed
- SCIE
SCOPUS
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 491
- Start Page
- 247
- End Page
- 254
- ISSN
- 1542-1406
- Abstract
- We investigated the effect of carbon nanotube on the crystal structure and mechanical/ferroelectric/piezoelectric properties based on poly(vinylidene fluoride) (PVDF) and carbon nano tube (CNT) composite film. The composite films were prepared by solution blending method, and the films were formed by hot-pressing. The contents of CNT were from 0.001wt.% to 1wt.%. For inducing piezoelectric beta-crystal structure, the hot-pressed nano composite films were drawn by 400% elongation. These samples were poled at high voltage and high temperature for polarization of the PVDF/CNT composite film. The beta-crystalline phase were increased with CNT contents, passing through the peak, and decreased. The structural changes depend on the CNT contents, drawing and poling conditions.
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