CRYSTALLINE AND LIQUID-CRYSTALLINE PROPERTIES OF POLYESTERS OF PHENYL-SUBSTITUTED 4,4'-BIPHENOL .2. COPOLYMERS WITH 4-HYDROXYBENZOIC ACID

被引:23
作者
BHOWMIK, PK
ATKINS, EDT
LENZ, RW
机构
[1] UNIV MASSACHUSETTS,DEPT CHEM,AMHERST,MA 01003
[2] UNIV BRISTOL,HH WILLS PHYS LAB,BRISTOL BS8 1TL,AVON,ENGLAND
关键词
D O I
10.1021/ma00055a007
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
The results of X-ray diffraction, DSC, and optical microscopy are presented for a series of four copolyesters of either 3-phenyl-4,4'-biphenol (MPBP) or 3,3'-diphenyl-4,4'-biphenol (DPBP) with either terephthalic acid (TA) or 2,6-naphthalenedicarboxylic acid (NDA) and 30 mol % of p-hydroxybenzoic acid (HBA). The properties of the copolyesters resembled those of the Xydar family of polymers. The X-ray diffraction patterns of oriented samples drawn from the nematic phase of three of the four copolymers showed a series of aperiodic intensity maxima on the meridian, orientation, or fiber direction, which, in general terms, are consistent with that expected from a random sequence of monomers.
引用
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页码:447 / 451
页数:5
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