SYNTHESIS AND CHARACTERIZATION OF SIDE-CHAIN LIQUID-CRYSTALLINE POLYSILOXANES CONTAINING OLIGOOXYETHYLENE SPACERS AND BENZYL ETHER BASED MESOGENIC GROUPS

被引：30
作者：
HSIEH, CJ
HSU, CS
HSIUE, GH
PERCEC, V
机构：
[1] NATL TSING HUA UNIV, DEPT CHEM ENGN, HSINCHU 300, TAIWAN
[2] CASE WESTERN RESERVE UNIV, DEPT MACROMOLEC SCI, CLEVELAND, OH 44106 USA
来源：
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY | 1990年 / 28卷 / 02期
关键词：
D O I：
10.1002/pola.1990.080280216
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 synthesis of side‐chain liquid crystalline polysiloxanes containing oligooxyethylene spacers and 4‐methoxyphenyl benzyl ether and 6‐cyano‐2‐naphthyl benzyl ether based mesogenic groups is presented. The phase behavior of both monomeric and polymeric liquid crystals was characterized by differential scanning calorimetry and optical polarized microscopy. All synthesized polysiloxanes present smectic mesomorphism. The insertion of oxygen atoms into the flexible aliphatic spacers leads to decrease in both glass transition and isotropization temperatures of the resulting side‐chain liquid crystalline polymers. Copyright © 1990 John Wiley & Sons, Inc.
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页码：425 / 435
页数：11
相关论文
共 17 条
[1]   MESOMORPHIC BEHAVIOR OF COMPOUNDS OF LOW THERMAL PHASE STABILITY [J].
DIETRICH, HJ ;
STEIGER, EL .
MOLECULAR CRYSTALS AND LIQUID CRYSTALS, 1972, 16 (03) :263-&
[2]  
DURAN R, 1987, MAKROMOL CHEM, V188, P2001
[3]  
DURAN R, 1986, MOL CRYST LIQ CRYST, V3, P23
[4]   MOLECULAR-WEIGHTS AND SOLUTION PROPERTIES OF A SERIES OF SIDE-CHAIN LIQUID-CRYSTALLINE POLYMERS WITH ETHYLENE-OXIDE SPACERS [J].
DURAN, R ;
STRAZIELLE, C .
MACROMOLECULES, 1987, 20 (11) :2853-2858
[5]   SYNTHESIS, STRUCTURE AND PROPERTIES OF LIQUID-CRYSTALLINE POLYMERS [J].
ENGEL, M ;
HISGEN, B ;
KELLER, R ;
KREUDER, W ;
RECK, B ;
RINGSDORF, H ;
SCHMIDT, HW ;
TSCHIRNER, P .
PURE AND APPLIED CHEMISTRY, 1985, 57 (07) :1009-1014
[6]   LIQUID-CRYSTALLINE POLYMERS CONTAINING HETEROCYCLOALKANE MESOGENIC GROUPS .5. SYNTHESIS OF BIPHASIC CHIRAL SMECTIC POLYSILOXANES CONTAINING 2,5-DISUBSTITUTED-1,3-DIOXANE-BASED AND 2,5-DISUBSTITUTED-1,3,2-DIOXABORINANE-BASED MESOGENIC GROUPS [J].
HAHN, B ;
PERCEC, V .
MACROMOLECULES, 1987, 20 (12) :2961-2968
[7]  
HSU CS, 1988, MAKROMOL CHEM, V189, P1141
[8]   SYNTHESIS AND CHARACTERIZATION OF LIQUID-CRYSTALLINE POLYSILOXANES CONTAINING BENZYL ETHER MESOGENS [J].
HSU, CS ;
PERCEC, V .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1987, 25 (10) :2909-2923
[9]   LIQUID-CRYSTALLINE POLYMERS CONTAINING HETEROCYCLOALKANE MESOGENS .2. SIDE-CHAIN LIQUID-CRYSTALLINE POLYSILOXANES CONTAINING 2,5-DISUBSTITUTED-1,3-DIOXANE MESOGENS [J].
HSU, CS ;
RODRIGUEZPARADA, JM ;
PERCEC, V .
JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY, 1987, 25 (09) :2425-2445
[10]  
HSU CS, 1987, MAKROMOL CHEM-RAPID, V8, P331
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