| 二甲基硅氧烷甘醇乙酸基共聚物水溶液的表面活性 |
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| 引用本文： | 王雅婧,徐桂英,敖明祺,朱艳艳.二甲基硅氧烷甘醇乙酸基共聚物水溶液的表面活性[J].物理化学学报,2009,25(4):624-628. |
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| 作者姓名： | 王雅婧 徐桂英 敖明祺 朱艳艳 |
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| 作者单位： | Key Laboratory of Colloid Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, P. R. China |
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| 摘 要： | 通过表面张力的测定, 考察了不同无机盐和温度对二甲基硅氧烷甘醇乙酸基共聚物(PSEP)表面活性的影响, 进而研究PSEP在不同介质中胶束形成热力学性质. 研究表明, NaCl、NaBr和CaCl2的存在可提高PSEP的表面活性. 而且, PSEP的胶束化焓变对熵变呈线性相关, 说明存在焓/熵补偿现象.
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| 关 键 词： | 硅表面活性剂 表面活性 焓/熵补偿 |
| 收稿时间： | 2008-10-23 |
| 修稿时间： | 2009-01-07 |
Surface Activity of Poly(dimethylsiloxane)ethoxylate/propoxylate in Aqueous Solution |
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| WANG Ya-Jing,XU Gui-Ying,AO Ming-Qi,ZHU Yan-Yan.Surface Activity of Poly(dimethylsiloxane)ethoxylate/propoxylate in Aqueous Solution[J].Acta Physico-Chimica Sinica,2009,25(4):624-628. |
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| Authors: | WANG Ya-Jing XU Gui-Ying AO Ming-Qi ZHU Yan-Yan |
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| Institution: | Key Laboratory of Colloid Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, P. R. China |
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| Abstract: | The surface tension and critical micelle concentration of poly(dimethylsiloxane)ethoxylate/propoxylate (PSEP) were determined. The effects of temperature and three different inorganic salts on micellization were also investigated. We found that the surface activity of the PSEP solution was enhanced by adding NaCl, NaBr, and CaCl2. The enthalpy-entropy plots of PSEP micelle formation in aqueous solution with various salts exhibited excellent linearity, meaning that enthalpy/entropy compensation existed in these systems. |
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| Keywords: | Silicone surfactant Surface activity Enthalpy/entropy compensation |
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