THERMOTROPIC LIQUID-CRYSTALLINE COPOLYESTER BASED ON 8-(3-HYDROXYPHENYL) OCTANOIC-ACID AND PARA-HYDROXYBENZOIC ACID

被引:22
|
作者
PILLAI, CKS
SHERRINGTON, DC
SNEDDON, A
机构
[1] UNIV STRATHCLYDE,DEPT PURE & APPL CHEM,THOMAS GRAHAM BLDG,295 CATHEDRAL ST,GLASGOW G1 1XL,SCOTLAND
[2] CSIR,REG RES LAB,TRIVANDRUM 695019,INDIA
关键词
CARDANOL; THERMOTROPIC LIQUID CRYSTALLINE COPOLYESTER; SYNTHESIS; CHARACTERIZATION; 3-HPOA; PARA-HBA;
D O I
10.1016/0032-3861(92)90390-I
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A thermotropic liquid crystalline copolyester formed by polycondensation of 8-(3-hydroxyphenyl) octanoic acid (3-HPOA) and p-hydroxybenzoic acid has been synthesized and characterized. 3-HPOA having both a flexible segment and a rigid kink in its structure has been synthesized by phase transfer catalysed oxidation of cardanol. The copolyester was anisotropic under crossed polarized light between 200-degrees-C and 409-degrees-C. D.s.c. showed two mesophase transitions with maxima at 256-degrees-C and 342-degrees-C, respectively.
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页码:3968 / 3970
页数:3
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