组成对PS/PS-b-PMMA共混物在空气/水界面聚集行为的影响
omposition Effect on the Aggregation Behavior of Homo-PS/PS-b-PMMA Blends at the Air/Water Interface
本文利用KSV膜天平和原子力显微镜(AFM)研究了均聚物聚苯乙烯(h-PS)与苯乙烯-甲基丙烯酸甲酯嵌段共聚物(PS-b-PMMA，SMMA)的共混物在空气/水界面的聚集行为。利用Langmuir膜天平技术得到了不同h-PS含量下共混物Langmuir单层的p-A等温线和滞后曲线。将Langmuir单层转移到硅片上得到相应的LB膜，并利用AFM对其表面形态进行表征。结果表明，当h-PS含量为20%时，h-PS/SMMA共混物聚集形态主要表现为孤立的圆形胶束，随着沉积压力的增大，棒状胶束开始出现。随着h-PS含量的进一步增加，当达到60%时，滞后现象比较明显，规整稳定的项链网络结构开始形成。
he Langmuir film balance technology and AFM was used to study the aggregation behavior of the mixed Langmuir monolayer of homo-polystyrene (h-PS) and polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA)(SMMA) .The p-A isotherms were measured at different h-PS contents. The morphology of the surface micelles was investigated by atomic force microscopy after transferring a Langmuir monolayer onto a silicon wafer, respectively. When the content of h-PS was about 20wt%, the mixed LB film of h-PS/ PS-b-PMMA mainly exhibit isolated circular micelles. Rod-shaped micelles started to appear with h-PS content over 20wt%. With a further increase of the h-PS content over 60wt%, more uniform and stable necklace-network structures were formed in the mixed LB films.
安立佳、石彤非、文纲要、王亮、施云波、高明明
高分子化合物工业合成树脂工业、塑料工业
LB膜高分子共混物FM
LB filmpolymer blendFM
安立佳,石彤非,文纲要,王亮,施云波,高明明.组成对PS/PS-b-PMMA共混物在空气/水界面聚集行为的影响[EB/OL].(2009-10-05)[2025-08-11].http://www.paper.edu.cn/releasepaper/content/200910-30.点此复制
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