Polymer−Organosilane Interactions Studied at the Air/Water Interface

Polymer−Organosilane Interactions Studied at the Air/Water Interface
复制标题

空气/水界面处聚合物-有机硅烷相互作用的研究

DOI：
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发表时间：
2000
期刊：
影响因子：
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通讯作者：
J. Rosenholm
J. Rosenholm
中科院分区：
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文献类型：
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作者：
M. And;J. Rosenholm

文献摘要

被引文献

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通过表面压力和表面电势等温线，研究了十八烷基三甲氧基硅烷 (OTMS) 和聚环氧乙烷 (PEO) 的混合单层在空气/水界面上作为 pH 函数的变化。 PEO 对大单层区域的等温线有很大影响，同时它在高表面压力下被挤出空气/水界面。在 PEO 存在下，未水解 OTMS 的 LE−LC 转变压力增加了几个 mN/m，而 PEO 对小单层区域水解 OTMS 的等温线影响很小。结果根据非水解 OTMS 的甲氧基和 PEO 之间有吸引力的范德华相互作用进行了讨论。
Mixed monolayers of octadecyltrimethoxisilane, OTMS, and poly(ethylene oxide), PEO, have been studied at the air/water interface as a function of pH by means of surface pressure and surface potential isotherms. PEO had a strong influence on the isotherms at large monolayer areas, while it was squeezed out of the air/water interface at high surface pressures. The LE−LC transition pressure of unhydrolyzed OTMS was increased by several mN/m in the presence of PEO, while PEO had little influence on the isotherms of hydrolyzed OTMS at small monolayer areas. The results are discussed in terms of attractive van der Waals interactions between methoxy groups of nonhydrolyzed OTMS and PEO.