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制备了以苯乙烯/马来酸4羧基酚酯共聚物( M E S M A)为质子供体,苯乙烯基吡啶(4 S Z)为质子受体的氢键诱导液晶复合物。用 D S C和 P O M 研究二者复合前后的液晶行为。结果表明,4 S Z含量在30% ~70% 的复合物表现为向列相液晶态,其中等摩尔比的复合物的热稳定性最高。并从 I R 结果讨论了 M E S M A/4 S Z二元组分的摩尔比与分子间氢键的关系,等摩尔比时,复合物以羧酸与吡啶环之间的氢键为主;而非等摩尔比时,存在羧酸之间的氢键。
Preparation of a styrene / maleic acid 4 carboxylate copolymer (M E S M A) as a proton donor, styrylpyridine (4 S Z) proton acceptor hydrogen bond induced liquid crystal composite . D S C and P O M were used to study the liquid crystal behavior before and after recombination. The results show that the composites with 4SZ content of 30% -70% exhibit nematic liquid crystal state, and the complexes with the same molar ratio have the highest thermal stability. And the relationship between the molar ratio of M E S M A / 4 S Z binary components and the intermolecular hydrogen bonds was discussed from the I R results. When the molar ratio is equal to the molar ratio of the carboxylic acid to the pyridine ring Dominated; instead of equimolar ratio, the presence of hydrogen bonds between carboxylic acids.