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Citation: 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(04): 624-628. doi: 10.3866/PKU.WHXB20090414 shu

Surface Activity of Poly(dimethylsiloxane)ethoxylate/propoxylate in Aqueous Solution

1.
Key Laboratory of Colloid Interface Chemistry, Ministry of Education, Shandong University, Jinan 250100, P. R. China

Received Date: 23 October 2008
Available Online: 18 February 2009

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.
- Silicone surfactant,
- Surface activity,
- Enthalpy/entropy compensation
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