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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1002Dielectric Behavior of PVDF/PP-PT Nanocomposite...

Dielectric Behavior of PVDF/PP-PT Nanocomposite Thin Films

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Abstract:

PVA/PVP-assisted hydrothermal method was used to prepare single-crystal pre-perovskite PbTiO₃ (PP-PT) nanofibers, in which polyvinyl alcohol (PVA) and polyvinyl pyrrolidone (PVP) acted as surfactants. Subsequently, poly (vinylidene fluoride)/ pre-perovskite PbTiO₃ nanofibers (PVDF/PP-PT) nanocomposite thin films were successfully fabricated by a spin-coating method. The test results showed that PP-PT nanofibers had a good distribution in PVDF matrix. Moreover, α-phase coexisted with β-phase in the PVDF and PVDF/PP-PT nanocomposite thin films. The dielectric properties of the PVDF/PP-PT nanocomposite thin films were measured as a function of frequency in the range of 5 kHz to 5 MHz. It is worth noting that the dielectric constant of nanocomposite thin films increased with increasing the weight ratio of PP-PT nanofibers in the low frequency range. By contrast, the dielectric constant of PVDF/PP-PT nanocomposite thin film which contained 20% PP-PT nanofibers was 43.7% larger than that of pure PVDF thin film (ε_r = 6.77) at 5 kHz, and the loss tangent was ~0.03.

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Periodical:

Advanced Materials Research (Volume 1002)

Pages:

11-16

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.1002.11

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Online since:

August 2014

Authors:

Ting Ting Yu, Zhao Hui Ren*, Si Min Yin, Xin Yang, Yi Feng Yu, Xiang Li, Xiao Wei, Gang Xu, Ge Shen, Gao Rong Han

Keywords:

Dielectric Property, Nanocomposite, PP-PT, PVDF

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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