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Depolarized light intensity studies on the order parameter in lyotropic liquid crystalline polymer

✍ Scribed by Jiaping Lin; Shijin Li

Publisher: Elsevier Science
Year: 1994
Tongue: English
Weight: 288 KB
Volume: 30
Category: Article
ISSN: 0014-3057
DOI: 10.1016/0014-3057(94)90114-7

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✦ Synopsis

The order parameter, S, for the nematic solutions of poly(p-benzamide) (PBA) in concentrated sulfuric acid was determined with the Depolarized light intensity (DLI) technique. It was shown that the DLI technique is a valuable and convenient method to study the order parameter in lyotropic liquid crystalline polymers. From the experiments, S was found to decrease with temperature and increase with polymer concentration. The concentration dependence of S was further compared with results derived from theories proposed by Doi and Onsager.

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