【摘要】 研究了聚苯乙烯(S)-聚环氧乙烷(E)星形嵌段共聚物的结晶及络合性质.结果表明,结晶度随E含量及分子量增大而增大.共聚物熔融后在20℃淬火比0℃淬火的结晶规整,氯仿溶液浇铸的样品比乙苯浇铸的规整.共聚物在甲苯溶液中呈现特殊的介晶现象.紫外吸收光谱表明,它能与苦味酸碱金属盐络合,使不溶于氯仿及甲苯的钾盐或钠盐进入溶液.更多还原

【Abstract】 The crystalline properties and complexing ability of the amphiphilic star-shaped poly-styrene(S)-polyoxyethykne(E) block Copolymers were studied. The results show that crystal-linity increases with increase of E content or molecular weight of the copolymers. The sphe-rulites observed by quenching their melt at 20℃ or casting from CHCl3 solution appear more regular than quenching their melt at 0℃ or casting from ethylbenzene solution. These new copolymers show some mesomorphic phenomeni in toluene solution. UV spectra indicate that they can complex with picrate of alkali metals and enhance the solubility of the salt in CHCl3 or toluene.更多还原