文章基本信息

标题：SYNTHESIS AND CHARACTERIZATION OF NOVELCOPOLYESTERS FROM4,4'-OXYBIS(BENZOIC ACID)
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作者：N. Malathy ; D. Roop Singh
期刊名称：Indian Streams Research Journal
印刷版ISSN：2230-7850
出版年度：2011
卷号：I
期号：VII
出版社：Indian Streams Research Journal
摘要：Four new thermotropic liquid crystalline random copolyesters with ethereal linkages were prepared from mesogenic 4,4'-oxybis(benzoic acid) by direct polycondensation with different aliphatic and aromatic diols in pyridine solution. Diphenylchlorophosphate (DPCP) was employed as the condensation agent. Viscosity measurements, FT IR and 1H spectral data were used for investigating their structural features. The thermal phase transitions and thermotropic liquid crystalline (TLC) behaviour of these polymers were investigated differential scanning calorimetry (DSC)
关键词：Thermotropic;liquid crystalline;random copolyesters