十二烷基(6)聚氧乙烯醚分子泡沫双层的X射线反射
摘要
采用X射线反射法(X-ray reflectometry)测定了十二烷基(6)聚氧乙烯醚(C_(12)E_6)分子所形成的自由站立式(free-standing)泡沫双层的结构参数。结果表明:此双层膜中的疏水碳氢链区、极性头区和表面活性剂分子单层之间3个区域的厚度分别为0.90,1.35和1.31nm;电子密度分别为2.4×10^(-3),2.6×10^(-3)和2.3×10^(-3)电子数/nm^3;区域之间的界面粗糙度为0.34nm。泡沫双层中两极性头区之间不含自由水,而且其厚度在红外光线的照射下可变薄0.40nm;这可能是由于结构水被破坏所致。
出处
《科学通报》
EI
CAS
CSCD
北大核心
2003年第12期1295-1297,共3页
Chinese Science Bulletin
基金
教育部留学回国人员科研启动基金(批准号:2002247)
山东省中青年科学家奖励基金(批准号:02BS115)
山东大学青年基金(批准号:Y34029)资助项目.
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