期刊
MOLECULAR CRYSTALS AND LIQUID CRYSTALS
卷 491, 期 -, 页码 247-254出版社
TAYLOR & FRANCIS LTD
DOI: 10.1080/15421400802330861
关键词
carbon nano tube; ferroelectric properties; nano-composite; poly(vinylidene fluoride)
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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