Synthesis and application of cationic fluorocarbon surfactants

AbstractIn this paper, a series of cationic polyurethane fluorinated surfactants were synthesized using a series of isocyanates, and 1H, 1H, 2H,2H-tridecafluoro-1-octanol, 2-(dimethylamino)ethanol, and iodomethane as raw materials in a three-step sequential reaction. These fluorinated surfactants exhibited high surface activity and low critical micelle concentration. In addition, these fluorinated surfactants exhibited excellent wetting and emulsification properties at very low concentrations of 0.1 wt%. In addition the cationic polyurethane fluorinated surfactants are compounded into aqueous film-forming foam extinguishing agents, which exhibit excellent fire extinguishing properties. The desirable properties coupled with the simple and green preparation process make this strategy a new way to prepare sustainable alternatives to long fluoroalkyl chain surfactants. A new degradable cationic fluorocarbon surfactant prepared by coupling isocyanate and hydroxyl group was developed and applied to fire fighting.Keywords: Polyurethanesurfactantcritical micelle concentrationaqueous film-forming foam extinguishing agent Author contributionsSaipeng Zhang: Writing - original draft, Investigation. Mingxin Zhang: Investigation. Xingjiang Liu: Conceptualization, Supervision, Funding acquisition. Investigation. Liuhe Wei: Project administration, ResourcesDisclosure statementNo potential conflict of interest was reported by the authors.