NMR-INVESTIGATIONS OF FIELD-INDUCED ORIENTATION IN LIQUID-CRYSTALLINE POLYMER LAYERS

被引：1
|
作者：
GESCHKE, D
STEFFEN, M
机构：
[1] Universitat Leipzig, Fachbereich Physik, D-0-7010 Leipzig
来源：
INTERNATIONAL JOURNAL OF POLYMERIC MATERIALS | 1993年 / 22卷 / 1-4期
关键词：
LIQUID CRYSTAL POLYMERS; POLYMER LAYERS; EXTERNAL FIELDS; ORIENTATIONAL ORDER; NUCLEAR MAGNETIC RESONANCE;
D O I：
10.1080/00914039308012063
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
Solid state NMR is used to study the orientational order in thin layers of a liquid-crystalline polymer after a preceding influence of an orienting field. Samples were produced of polysiloxane with the mesogenic group in the side chain by melting the polymer between plated glass. In order to achieve a good orientation cooling has been stopped at the clearing temperature for 2 h and then carried on to room temperature with the electric and the magnetic field, respectively, still applied. Alignment of domains could be realized only in part by the electric dc field.
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页码：95 / 101
页数：7
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