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Effect of microwave irradiation on crystalline structure and dielectric property of PVDF/PZT composite

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Abstract

The crystalline structure change and dielectric performance of microwave-irradiated PVDF/PZT composites were studied by FTIR, DSC, DMTA, and DEA. The dielectric analysis suggests that the dielectric permissivity and loss reduce, which is useful for improving the sensitivity of composites used in passive transducers. The structure analysis results show that the microwave irradiation promotes crystalline transformation of PVDF from α to β; The crystallinity of PVDF in PVDF/PZT composites increases and ΔT decreases; the DMTA measurements illustrate that the value of E′ and tanδ peak increases after irradiation.

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Acknowledgements

The authors are grateful for the support from the Special Funds from Major State Basic Research Projects of China (G1999064809) and the National Natural Science Foundation of China (Nos.50233010 and 29904004).

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  1. The State Key Laboratory of Polymer Materials Engineering of China, Polymer Research Institute of Sichuan University, Chengdu, Sichuan, 610065, China

    Qijia He & Aimin Zhang

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  1. Qijia He
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  2. Aimin Zhang
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Correspondence to Qijia He.

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He, Q., Zhang, A. Effect of microwave irradiation on crystalline structure and dielectric property of PVDF/PZT composite. J Mater Sci 43, 820–823 (2008). https://doi.org/10.1007/s10853-007-2153-1

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