INDUCTION OF SMECTIC A(D)-PHASE IN POLAR SYSTEMS .1. MIXTURES OF NCBB AND NOCB

被引:28
作者
BRODZIK, M [1 ]
DABROWSKI, R [1 ]
机构
[1] MIL UNIV TECHNOL,INST CHEM,UL KALISKIEGO 2,PL-01489 WARSAW,POLAND
关键词
D O I
10.1080/02678299508036591
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Bicomponent mixtures of 4-cyanobiphenyl-4'-yl 4'-alkylbiphenyl-4-carboxylates (nCBB) and 4-alkoxy-4'-cyanobiphenyls (nOCB) were studied and their phase diagrams obtained by thermonicroscopy. The strong enhancement of a smectic A(d) phase in mixture with the smectic members of the nOCB (n greater-than-or-equal-to 8) series and the induction of a smectic A(d) phase in the shape of an island surrounded by a nematic phase in mixtures with the nematic members of the nOCB (n < 8) series were observed. The influence of aliphatic chain length on the observed phenomena is discussed.
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页码:61 / 66
页数:6
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