醇溶剂结构对甾醇表面活性剂聚集行为的影响
发布时间：2018-08-07 16:18
【摘要】：为了研究植物甾醇表面活性剂在醇类溶剂中的聚集行为,选择羟基数目和相对位置不同的丙二醇、正丙醇和异丙醇为溶剂,采用表面张力、偏光显微镜、冷冻蚀刻透射电镜、小角X射线散射、红外光谱、流变学和理论模拟手段,系统研究了此类表面活性剂在上述溶剂中构建的有序分子聚集体的结构及性能。研究结果表明,植物甾醇类表面活性剂在3种醇溶剂中均可形成有序聚集体,但由于溶剂结构和性质的差别,聚集行为不尽相同。植物甾醇类表面活性剂在丙二醇中可以自组装形成胶束、囊泡及溶致液晶相;而在正丙醇和异丙醇中仅在较高浓度下形成溶致液晶相。
[Abstract]:In order to study the aggregation behavior of phytosterol surfactants in alcohol solvents, propylene glycol, n-propanol and isopropanol with different hydroxyl groups and relative positions were selected as solvents, surface tension, polarizing microscope, and transmission electron microscopy (TEM) were used. The structure and properties of the ordered molecular aggregates constructed by small angle X-ray scattering, infrared spectroscopy, rheology and theoretical simulation were systematically studied. The results show that phytosterol surfactants can form ordered aggregates in three kinds of alcohol solvents, but the aggregation behavior is different due to the difference of solvent structure and properties. Phytosterol surfactants can self-assemble into micelles, vesicles and lyotropic liquid crystalline phase in propylene glycol, while in n-propanol and isopropanol, lyotropic liquid crystal phase can be formed only at higher concentration.
【作者单位】： 山东大学胶体与界面化学教育部重点实验室;
【基金】：国家自然科学基金资助项目(21373127) 高等学校博士学科点专项科研基金资助项目(20130131110010)
【分类号】：O647.2
[Abstract]:In order to study the aggregation behavior of phytosterol surfactants in alcohol solvents, propylene glycol, n-propanol and isopropanol with different hydroxyl groups and relative positions were selected as solvents, surface tension, polarizing microscope, and transmission electron microscopy (TEM) were used. The structure and properties of the ordered molecular aggregates constructed by small angle X-ray scattering, infrared spectroscopy, rheology and theoretical simulation were systematically studied. The results show that phytosterol surfactants can form ordered aggregates in three kinds of alcohol solvents, but the aggregation behavior is different due to the difference of solvent structure and properties. Phytosterol surfactants can self-assemble into micelles, vesicles and lyotropic liquid crystalline phase in propylene glycol, while in n-propanol and isopropanol, lyotropic liquid crystal phase can be formed only at higher concentration.
【作者单位】： 山东大学胶体与界面化学教育部重点实验室;
【基金】：国家自然科学基金资助项目(21373127) 高等学校博士学科点专项科研基金资助项目(20130131110010)
【分类号】：O647.2
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