摘要
含联苯核和取代基液晶聚甲亚胺醚的合成张其震，薛庆斌，李小放（山东大学化学系，济南，２５０１００）关键词聚甲亚胺醚，相转移催化，双－（３－甲氧基－４－羟基苄叉）－４，４’－二亚胺基联苯，条带织构高分子液晶中聚酷胺和聚酯研究较多，聚甲亚胺醚研究较少，Ｗｏ...
his paper deals with synthesis of mesogenic condensation monomer, bis- (3- methoxy - 4 -- hydroxybenzylidene ) -- 4, 4' -- diimidobiphenyl (biphenol ), seven main chain thermotropic polyazomethine-- ethers made from biphenol and a, ω -dibromoalkane by phase -- transfer--catalysis polyetherification reaction are discussed.Ther structure have ho characterics by 1H--NMR, IR spectra and element analysis. The effect of alkali aqueous concentration on solubility has been investigated. The banded texture of oriented specimens remains almost unchanged during the melting transition but birefringent weakens and the banded texture graduallydisappears with increasing temperature.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1994年第5期604-608,共5页
Acta Polymerica Sinica
基金
国家自然科学基金
中国科学院化学研究所高分子物理联合开放实验室资助
关键词
联苯核
液晶
聚甲亚胺醚
合成
Polyazomethine- ethers, Bis - (3- methoxy- 4-hydroxy- benzylidene- 4,4' - diimidobiphenyl, Phase -transfer- catalysis, Banded texture
