Dielectric behavior of nano-PbTiO3/PVDF nanocomposites in-situ synthesized by the sol-gel method

Quan Hongying; Xiong Chuanxi; Dong Lijie; Zhao Guanghui

doi:10.1007/BF02840859

Journal of Wuhan University of Technology Materials Science Edition ›› 2006, Vol. 21 ›› Issue (2) : 133 -135. DOI: 10.1007/BF02840859

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Dielectric behavior of nano-PbTiO₃/PVDF nanocomposites in-situ synthesized by the sol-gel method

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Abstract

PbTiO₃/PVDF nanocomposites were prepared via in-situ growth of nanosized PbTiO₃ particles in PVDF matrix by sol-gel method. Nanosized PbTiO₃ grown in the composites film was characterized by X-ray diffractometry (XRD) and transmission electron microscopy, and the dielectric properties of the composite films prepared were measured. The distribution of PbTiO₃ nanoparticles in-situ grown in the PVDF matrix was examined using a scanning electron microscope. The relative dielectric constant increases with increasing the weight fraction of PbTiO₃ in-situ grown. In particular, the dielectric loss monotonically decreases with the increase of PbTiO₃ content at 1MHz.

Keywords

PbTiO₃/PVDF / nanocomposites / dielectric property / sol-gel / molded

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Quan Hongying, Xiong Chuanxi, Dong Lijie, Zhao Guanghui. Dielectric behavior of nano-PbTiO₃/PVDF nanocomposites in-situ synthesized by the sol-gel method. Journal of Wuhan University of Technology Materials Science Edition, 2006, 21(2): 133-135 DOI:10.1007/BF02840859

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