Dipole Polarization Formed on Surface of Polypropylene Electrets

被引:11
作者
Matsuda, Yasuhiro [1 ]
Saito, Yoshihiro [1 ]
Tasaka, Shigeru [1 ]
机构
[1] Shizuoka Univ, Dept Mat Sci & Chem Engn, Naka Ku, Hamamatsu, Shizuoka 4328561, Japan
关键词
Electrets; polypropylene films; surface treatment; dipole arrays; corona; FILMS;
D O I
10.1109/TDEI.2010.5539669
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The surface chemical composition and pyroelectric properties in polypropylene (PP) film poled by corona discharge in the air were estimated by Fourier transform infrared spectrophotometry (FTIR), gel permeation chromatography (GPC), differential scanning calorimetry (DSC), thermally stimulated depolarization current (TSDC), and pyroelectricity measurement. The corona discharge oxidized the PP chains at the surface into oligomers bearing C=O, C-O and COH groups, and formed hetero charge, and counter homo charge absorbed strongly on the surface. The pyroelectricity and surface potential were undetected after removing the polymer surface with solvent or scratching. TSDC curves indicated that the both homo and hetero charges were stable below the melting point of the oligomers. The stabilization mechanism of surface potential was investigated from the electric behavior and the chemical structure of poled PP films.
引用
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页码:1015 / 1020
页数:6
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