School of ChemistryUniversity of Bristol, Cantock's Close, Bristol, BS8 1TS, UK.
Langmuir. 2012 Apr 17;28(15):6299-306. doi: 10.1021/la3005322. Epub 2012 Apr 6.
The relationships between molecular architecture, aggregation, and interfacial activity of a new class of CO(2)-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-F chain structure strikes a fine balance of properties, on one hand minimizing the fluorine content, while on the other maintaining a sufficient level of CO(2)-philicity. The surfactant has been investigated by a range of techniques including high-pressure phase behavior, UV-visible spectroscopy, small-angle neutron scattering (SANS), and air-water (a/w) surface tension measurements. The results advance the understanding of structure-function relationships for generating CO(2)-philic surfactants and are therefore beneficial for expanding applications of CO(2) to realize its potential using the most economic and efficient surfactants.
研究了一类新型亲 CO2 混合表面活性剂的分子结构、聚集和界面活性之间的关系。新的混合表面活性剂 CF2/AOT4 [ （4H，4H，5H，5H，5H-五氟戊基-3，5，5-三甲基-1-己基）-2-磺基琥珀酸钠] 被合成，具有一条烃链和一条单独的氟碳链。这种混合 H-F 链结构在性能上取得了很好的平衡，一方面尽量减少氟含量，另一方面又保持了足够的亲 CO2 性。该表面活性剂已通过一系列技术进行了研究，包括高压相行为、紫外可见光谱、小角中子散射（SANS）和空气-水（a/w）表面张力测量。这些结果提高了对生成亲 CO2 表面活性剂的结构-功能关系的认识，因此有利于扩大 CO2 的应用，以利用最经济和高效的表面活性剂实现其潜力。
