Effect of chain length distribution on the phase behavior of polyglycerol fatty acid ester in water
Effect of chain length distribution on the phase behavior of polyglycerol fatty acid ester in water
复制标题
链长分布对聚甘油脂肪酸酯在水中相行为的影响
DOI：
10.1007/s003960000361
复制
发表时间：
2000
影响因子：
2.4
通讯作者：
H. Kunieda
中科院分区：
文献类型：
--
作者：
M. Ishitobi;H. Kunieda
摘要研究了水/聚甘油脂肪酸酯体系中链长分布对相行为、液晶结构和物理化学性质的影响。使用具有急剧分布的聚甘油（10 G *0.7L）和具有广泛分布的聚甘油（10 G 0.7L）的聚甘油脂肪酸酯。去除两种表面活性剂中未反应的聚甘油。10 G *0.7L在比10 G 0.7L更高的浓度下形成六方液晶。由于链长分布的差异，10 G 0.7L的六方相中的亲油部分的有效横截面积小于10 G *0.7L的有效横截面积。显然，10G0.7L分子紧密地聚集在聚集体中;因此，10G0.7L更强烈地降低表面张力并促进乳化。
Abstract The effect of the chain length distribution on the phase behavior, the structure of liquid crystals, and physicochemical properties was investigated in water/ polyglycerol fatty acid ester. Polyglycerol fatty acid esters with sharply distributed polyglycerol (10G*0.7L) and with broadly distributed polyglycerol (10G0.7L) were used. Unreacted polyglycerol in both surfactants was removed. 10G*0.7L forms hexagonal liquid crystals at a higher concentration than 10G0.7L. The effective cross-sectional area of the lipophilic parts in the hexagonal phase of 10G0.7L is smaller than that of 10G*0.7L owing to the difference in the chain length distribution. Evidently, 10G0.7L molecules are tightly packed in aggregates; therefore, 10G0.7L decreased the surface tension more strongly and promoted emulsification.