Hybrid CO2-philic Surfactants with Low Fluorine Content

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• 作者：Azmi Mohamed ; Masanobu Sagisaka ; Martin Hollamby ; Sarah E. Rogers ; Richard K. Heenan ; Robert Dyer ; Julian Eastoe
• 刊名：Langmuir
• 出版年：2012
• 出版时间：April 17, 2012
• 年：2012
• 卷：28
• 期：15
• 页码：6299-6306
• 全文大小：370K
• 年卷期：v.28,no.15(April 17, 2012)
• ISSN：1520-5827

文摘

The relationships between molecular architecture, aggregation, and interfacial activity of a new class of CO₂-philic hybrid surfactants are investigated. The new hybrid surfactant CF2/AOT4 [sodium (4H,4H,5H,5H,5H-pentafluoropentyl-3,5,5-trimethyl-1-hexyl)-2-sulfosuccinate] was synthesized, having one hydrocarbon chain and one separate fluorocarbon chain. This hybrid H鈥揊 chain structure strikes a fine balance of properties, on one hand minimizing the fluorine content, while on the other maintaining a sufficient level of CO₂-philicity. The surfactant has been investigated by a range of techniques including high-pressure phase behavior, UV鈥搗isible spectroscopy, small-angle neutron scattering (SANS), and air鈥搘ater (a/w) surface tension measurements. The results advance the understanding of structure鈥揻unction relationships for generating CO₂-philic surfactants and are therefore beneficial for expanding applications of CO₂ to realize its potential using the most economic and efficient surfactants.