The synthesis and thermotropic liquid crystalline behavior of mesogenic moiety-linked ethyl cellulose |
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| Authors: | Changcheng Wu Yong Huang Shouxi Chen |
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| Affiliation: | (1) State Key Laboratory of Polymer Physics and Chemistry, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China e-mail: yhuang@cashq.ac.cn, Fax: +86-010-68597356, CN;(2) Laboratory of Cellulose and Lignocellulosics Chemistry, Guangzhou Institute of Chemistry, Chinese Academy of Science, Guangzhou 510650, China, CN |
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| Abstract: | Summary In this paper, a new mesogenic moiety was synthesized and characterized by IR, NMR, and MS. The mesogenic moiety-linked ethyl cellulose derivative was prepared by reaction of 4-methyloxyphenyl-4-oxyaceticacid benzoate with ethyl cellulose [EC, degree of substitution (DS) 2.1] through esterification. The polymer was characterized by IR, NMR, DSC, and hot-stage coupled polarizing microscopy. The DS of mesogenic unit is 0.49. The mesogenic moiety-linked ethyl cellulose derivative showed a thermotropic liquid crystalline behavior. Received: 12 November 2001 /Revised version: 7 January 2002/ Accepted: 16 January 2002 |
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