SYNTHESIS OF SIDE-CHAIN LIQUID-CRYSTALLINE POLYACRYLATES, POLYMETHACRYLATES AND POLYSILOXANES CONTAINING 4-CYANO-BIPHENYL 4-ALKANYLOXYBENZYL ETHER SIDE GROUPS

被引:1
作者
JUANG, TM
CHANG, CF
HSU, CS
机构
[1] Department of Applied Chemistry, National Chaio Tung University, Hsinchu,
关键词
D O I
10.1007/BF00297332
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 and characterization of side-chain liquid crystalline polyacrylates, polymethacrylates and polysiloxanes containing 4-cyanobiphenyl 4-alkanyloxybenzyl ether side groups are presented. All polymers display respectively a smectic A mesophase. The influence of the polymer backbone flexibility on the phase transition temperatures of the synthesized side-chain liquid crystalline polymers is discussed. The results demonstrate that flexible backbones enhance the decoupling of the motions of the side chain and main chain. Therefore, among three kinds of polymer backbones which contain the same mesogenic side groups, the most flexible one, i.e., polysiloxane, reveals a highest isotropization temperature and a widest temperature range of mesophase.
引用
收藏
页码:403 / 410
页数:8
相关论文
共 50 条
[21]   Ferrocene-containing thermotropic side-chain liquid-crystalline polymethacrylates [J].
Deschenaux, R ;
Izvolenski, V ;
Turpin, F ;
Guillon, D ;
Heinrich, B .
CHEMICAL COMMUNICATIONS, 1996, (03) :439-440
[22]   SYNTHESIS OF LIQUID-CRYSTALLINE POLYSILOXANES CONTAINING DIPHENYLDIACETYLENE SIDE GROUPS [J].
HSU, CS ;
LU, YH ;
CHEN, YN .
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1992, 204 :63-POLY
[23]   Synthesis and phase behavior of chiral side-chain liquid-crystalline polysiloxanes containing two mesogenic groups [J].
Hu, JS ;
Zhang, BY ;
Liu, ZJ ;
Zang, BL .
JOURNAL OF APPLIED POLYMER SCIENCE, 2002, 86 (11) :2670-2676
[24]   SYNTHESIS OF SIDE-CHAIN LIQUID-CRYSTALLINE POLYSILOXANES CONTAINING TRANS-CYCLOHEXANE BASED MESOGENIC GROUPS [J].
HSU, CS ;
LU, YH .
ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1991, 202 :57-POLY
[25]   Ferrocene-containing thermotropic side-chain liquid-crystalline polysiloxanes [J].
Deschenaux, R ;
Jauslin, I ;
Scholten, U ;
Turpin, F ;
Guillon, D ;
Heinrich, B .
MACROMOLECULES, 1998, 31 (17) :5647-5654
[26]   SIDE-CHAIN LIQUID-CRYSTALLINE POLYSILOXANES CONTAINING A CYANOHYDRIN CHIRAL CENTER [J].
CHIEN, LC ;
SHENOUDA, IG ;
SAUPE, A ;
JAKLI, A .
LIQUID CRYSTALS, 1993, 15 (04) :497-511
[27]   Synthesis and characterization of side-chain liquid-crystalline poly(ether carbonate)s containing biphenyl-based mesogenic groups [J].
Liaw, BR ;
Li, MA .
POLYMER, 1998, 39 (13) :2951-2961
[28]   Synthesis and characterization of side-chain cholesteric liquid crystalline polysiloxanes containing diosgeninyl groups [J].
Hu, JS ;
Zhang, BY ;
Pan, W ;
Xiao, WQ .
POLYMER JOURNAL, 2004, 36 (11) :920-926
[29]   Synthesis and characterization of side-chain liquid crystalline polysiloxanes and ionomers containing azo groups [J].
Shao, Bing ;
Zhang, Bao-Yan ;
Hu, Jian-She ;
Jiang, Tong-Ying .
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering, 2002, 18 (03)
[30]   Synthesis and Characterization of Side-Chain Cholesteric Liquid Crystalline Polysiloxanes Containing Diosgeninyl Groups [J].
Jian-She Hu ;
Bao-Yan Zhang ;
Wei Pan ;
Wen-Qiang Xiao .
Polymer Journal, 2004, 36 :920-926