Peng Mengyuan, Sha Min, Zhang Ding, Jiang Biao
School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, P. R. China.
School of Management Science & Engineering, Nanjing University of Finance & Economics, Nanjing, Jiangsu 210046, P. R. China.
Langmuir. 2024 Jun 11;40(23):12216-12225. doi: 10.1021/acs.langmuir.4c01279. Epub 2024 May 28.
This article reports the synthesis of a novel sulfonated fluorocarbon surfactant (SFDC) containing double C perfluorinated branched short chains and compares its surface properties with a similar structured compound (SFDC-L) in solutions. The critical micelle concentration (CMC) and the corresponding surface tension (γ) of SFDC aqueous solution are 9.77 × 10 mmol/L and 22.15 mN/m, respectively, indicating that SFDC has excellent surface properties. Besides, the addition of -hexyltrimethylammonium bromide (HTAB) could further enhance the surface properties of SFDC. Meanwhile, the micellization, aggregation behavior, wettability, and adsorption at the air-water interface of SFDC and SFDC/HTAB mixture aqueous solutions are systematically investigated. Both SFDC and SFDC/HTAB show excellent wettability at low concentrations. The aggregation of SFDC and SFDC/HTAB mixtures in aqueous solution could be clearly seen as vesicles and rod-like micelles on TEM micrographs.
本文报道了一种含双碳全氟支化短链的新型磺化氟碳表面活性剂（SFDC）的合成，并将其在溶液中的表面性质与一种结构相似的化合物（SFDC-L）进行了比较。SFDC水溶液的临界胶束浓度（CMC）和相应的表面张力（γ）分别为9.77×10 mmol/L和22.15 mN/m，表明SFDC具有优异的表面性质。此外，添加十六烷基三甲基溴化铵（HTAB）可进一步增强SFDC的表面性质。同时，系统研究了SFDC和SFDC/HTAB混合水溶液的胶束化、聚集行为、润湿性以及在气-水界面的吸附。SFDC和SFDC/HTAB在低浓度下均表现出优异的润湿性。在透射电子显微镜照片上，可以清楚地看到SFDC和SFDC/HTAB混合物在水溶液中的聚集形态为囊泡和棒状胶束。
