纸质出版日期:1991-12-20
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利用小角 X-射线散射技术研完了双亲性聚氧化乙烯-聚二甲基硅氧烷-聚氧化乙烯三嵌段共聚物/水体系在高浓度的溶致性液晶相,测定了亲水区、疏水区随浓度和结构变化的尺寸等超分子结构参数。用简单的几何模型可满意地解释实验结果。
A set of poly(ethylene oxide)-poly(dimethylsiloxane)-poly(ethylene oxide) triblock copo-lymers having different block lengths in aqueous solution was stulied by small angle X-ray scattering (SAXS) method. It is shown that the amphiphilic triblock copolymers behave as lyotropoic liquid crystals in concentrated water solution. The respective influences of water concentration, block length on the geometrical parmeters of the supermolecular structures are established. The experimental results can be explained by simple geomerical model.
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