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Surface Activity, Wetting, and Aggregation of a Perfluoropolyether Quaternary Ammonium Salt Surfactant with a Hydroxyethyl Group

Jiangxun DouSchool of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, ChinaJiaoyan LiuSchool of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, ChinaYan WangSchool of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, ChinaLifei ZhiSchool of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, ChinaJixian ShenChina Research Institute of Daily Chemical Industry, Taiyuan 030001, ChinaGuoyong WangSchool of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China

2023en

ABI

Annotatsiya

This paper reports the synthesis of a novel quaternary surfactant containing a hydroxyethyl group (PFPE-C) and the surface properties of its aqueous solution (investigated by comparisons with two structurally similar chemicals, dodecyl-(2-hydroxyethyl)-dimethylammonium chloride (DHDAC) and PFPE-A). The minimum surface tension (γCMC) and critical micelle concentration (CMC) of the PFPE-C aqueous solution were 17.35 mN/m and 0.024 mmol/L, respectively. This study confirms that surfactants containing hydroxyethyl groups efficiently reduce the surface tension of aqueous solutions, and fluorocarbon surfactants exhibit better surface activity than ordinary hydrocarbon surfactants with similar structures. The micellization, aggregation, air-water interfacial adsorption, and wettability of PFPE-C aqueous solutions have been systematically investigated. Highly concentrated PFPE-C aqueous solutions exhibit good wettability on PTFE and paraffin films. Moreover, the aggregates of PFPE-C in the aqueous solution were clearly seen as vesicles on Cryo-TEM micrographs. Primary biodegradation results indicate that 19% of PFPC-C can be degraded within one week.

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Identifikatorlar

DOI: 10.3390/molecules28207151

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