Gemini表面活性剂在气/液界面上的微区形貌随表面压的变化
Variation of domain morphologies formed by Gemini surfactant with surface pressures at air/liquid interface
测定了Gemini表面活性剂在pH值为10.86，NaBr浓度为1.0mol·L-1的溶液气/液界面上的表面压－分子面积的等温线。用自制的Brewster角显微镜(BAM)观察了由Gemini表面活性剂在界面上所形成单分子膜的微区形貌随表面压的变化情况。结果表明：当pH值为10.86时，Gemini表面活性剂在1.0mol·L-1NaBr溶液的气/液界面上生成了凝聚态的单分子膜；当表面压较低时，观察到在界面上形成了同心圆结构；随着表面压的增加，这些同心圆可发生聚并而形成多中心结构。
he surface pressure - area per molecule isotherm of Gemini surfactant[propdiyl-1,3-bis (dimethyloctadecylammonium bromide)－PBDOAB] at an air/liquid interface of 1.0mol·L-1 aqueous NaBr solution at pH=10.86 has been measured. Variation of domain morphologies formed by Gemini surfactant with surface pressures at the air/liquid has been investigated via BAM, which was home-built. Results show that Gemini surfactant (PBDOAB) forms condensed monolayer at interface and that the concentric tori have been observed at lower surface pressures, while these structures can coalesce mutually and form multi-centered structures, as surface pressures increase
陈启斌、刘洪来、胡英、董亚明
化学
Gemini表面活性剂单分子膜微区形貌Brewster角显微镜
Gemini surfactant monolayer domain morphology Brewster angle microscope.
陈启斌,刘洪来,胡英,董亚明.Gemini表面活性剂在气/液界面上的微区形貌随表面压的变化[EB/OL].(2003-12-22)[2025-08-19].http://www.paper.edu.cn/releasepaper/content/200312-41.点此复制
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