NMR INVESTIGATIONS OF POLYMER ELECTRETS

被引：4

作者：

GESCHKE, D

HOLSTEIN, P

机构：

[1] Sektion Physik der Karl-Marx-Universität, Leipzig, 7010

来源：

MAKROMOLEKULARE CHEMIE-MACROMOLECULAR SYMPOSIA | 1990年 / 34卷

关键词：

D O I：

10.1002/masy.19900340113

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

1H NMR investigations were performed on thin films of poly(vinylidene fluoride) (PVDF) and polyamide 11 (PA 11). The variation of the angle between the static magnetic Bo‐field and preferred directions given by drawing and poling leads to characteristic dependences of T20ff, which can be discussed in terms of Legendre polynomials of the orientational distribution functions of crystallographic c‐ and b‐axis. A good c‐axis alignment can be realized by uniaxial drawing. The tendency for b‐axis to orient towards the direction of the applied electric field via the orientation of the electric dipoles is evident. The b‐axis alignment can be “switched” periodically. Copyright © 1990 Hüthig & Wepf Verlag

引用

页码：205 / 211

页数：7