PIEZOELECTRICITY AND MOLECULAR MOTION OF POLY (VINYLIDENE-FLUORIDE) BLENDS I. PVDF-PMMA Blends

ZENG Bai-fei; WU Bao-zhu; Shen Shou-peng; Wu Lin-sheng

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PIEZOELECTRICITY AND MOLECULAR MOTION OF POLY (VINYLIDENE-FLUORIDE) BLENDS I. PVDF-PMMA Blends

Research Article | 更新时间：2021-03-19

- PIEZOELECTRICITY AND MOLECULAR MOTION OF POLY (VINYLIDENE-FLUORIDE) BLENDS I. PVDF-PMMA Blends
- Acta Polymerica Sinica Issue 4, Pages: 245-250(1988)
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- Published：20 August 1988，
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ZENG Bai-fei, WU Bao-zhu, Shen Shou-peng, Wu Lin-sheng. PIEZOELECTRICITY AND MOLECULAR MOTION OF POLY (VINYLIDENE-FLUORIDE) BLENDS I. PVDF-PMMA Blends. [J]. Acta Polymerica Sinica (4):245-250(1988)
DOI：

ZENG Bai-fei, WU Bao-zhu, Shen Shou-peng, Wu Lin-sheng. PIEZOELECTRICITY AND MOLECULAR MOTION OF POLY (VINYLIDENE-FLUORIDE) BLENDS I. PVDF-PMMA Blends. [J]. Acta Polymerica Sinica (4):245-250(1988) DOI：

摘要

本文研究了PVDF-PMMA共混体系的压电性及其分子运动.其松弛转变过程与PVDF-P(VDF-HFE)及PVDF-P(VDF-TFE)共混体系相似

压电性低于PVDF-P(VDF-TFE)共混体系.当PMMA含量为3％时

其压电性与PVDF的接近

而其退极化温度却高于PVDF以及上述二个含氟共混体系的薄膜

随着PMMA的增加

其压电性也随之减弱

这是由于非晶相中偶极子浓度降低之故.

Abstract

This paper reports the piezoelectricity and molecular motion of PVDF-PMMA blends. The relaxation spectrum of the blends is very similar to that of PVDF-P (VDF-HFE) and PVDF-P (VDF-TFE)

but the piezoelectricity of which are wearker than that of PVDF-P (VDF-TFE). When the content of PMMA in the blend is equal to 3%

its piezoelectricity is nearly the same as PVDF

but the temperature of depolarization is higher than that of PVDF

PVDF (VDF-HFE) and PVDF (VDF-TFE). The piezoelectricity of PVDF-PMMA blends decrease with increase of the content of PMMA in the blends

owing to the lower concen-tration of the dipoles in the noncrystalline phase.

关键词

压电性分子运动共混物聚偏氟乙烯聚甲基丙烯酸甲酯

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Institute of Polymer Science,School of Chemistry and Chemical Engineering Zhongshan University

中山大学化学与化学工程学院高分子研究所

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