Test of Ferroelectricity in Non-stretched Poly(vinylidene fluoride)/Clay Nanocomposites
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概要
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We measured of the electric displacement $D$ versus electric field $E$ ($D$–$E$) hysteresis loop for non-stretched film samples of poly(vinylidene fluoride) (PVDF)/clay nanocomposites. The film was fabricated by compressing melted pellets followed by rapid cooling. The pellets were prepared by melt-compounding method. For the non-stretched film, we obtained clear $D$–$E$ hysteresis loops that are clear evidence of ferroelectricity at room temperature. Results of X-ray diffraction pattern analysis indicate that the crystal structure of PVDF in PVDF/clay nanocomposites is similar to the $\beta$-form of pure PVDF. We conclude that the crystallization of $\beta$-form PVDF in PVDF/clay nanocomposites is induced by the epitaxial growth of the $\beta$-form on the surface of clay platelets.
- 2007-11-15
著者
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Koda Tomonori
Department Of Applied Physics Faculty Of Engineering Nagoya University
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Suzuki Hideshige
Department Of Applied Chemistry Faculty Of Engineering University Of Miyazaki
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Nishioka Akihiro
Department Of Materials Science And Engineering Faculty Of Engineering Yamagata University
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Yamada Eiji
Department Of Child Development Kumamoto University School Of Medicine
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Ikeda Susumu
Department Of Applied Chemistry Faculty Of Science And Engineering Saga University
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Koda Tomonori
Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Nishioka Akihiro
Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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Suzuki Hideshige
Department of Polymer Science and Engineering, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan
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