Temperature variation of piezoelectric moduli in oriented poly(γ‐methylL‐glutamate)
作者:
Munehiro Date,
Saburo Takashita,
Eiichi Fukada,
期刊:
Journal of Polymer Science Part A‐2: Polymer Physics
(WILEY Available online 1970)
卷期:
Volume 8,
issue 1
页码: 61-70
ISSN:0449-2978
年代: 1970
DOI:10.1002/pol.1970.160080105
出版商: John Wiley&Sons, Inc.
数据来源: WILEY
摘要:
AbstractThe real and imaginary components of the complex piezoelectric strain constant, which relates the polarization to the applied stress, have been determined for elongated films of poly(γ‐methylL‐glutamate) over the temperature range −170°C to +170°C at a frequency of 20 Hz. The variation of the piezoelectric constant with temperature is similar for both α‐helical and β‐form molecular conformations. The sign of piezoelectric polarization is opposite forLandDpolymers. A simple model, representing the piezoelectric crystallites as embedded in nonpiezoelectric amorphous regions, is proposed to account for the piezoelectric temperature dis
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