日用化学工业2016，Vol.46Issue(8)：441-446,6.DOI:10.13218/j.cnki.csdc.2016.08.003
双尾及多尾氟表面活性剂在有机溶剂中的表面活性研究
Surface activities of double - tailed and multi - tailed fluorinated surfactants in organic solvents
摘要
Abstract
This work attempts to reduce the surface tension of organic solvents with oil - soluble fluorinated surfactants. Number of fluorocarbon chains in the surfactant molecule is increased thus to enhance density of the fluorocarbon chains adsorbed on surface layer of the organic solvents. Two series of fluorinated surfactants were synthesized:through the reaction of perfluorooctane sulfonyl fluoride with diamine (NH 2 (CH 2 ) n NH2 ,n =2,3,6,10),the oil - soluble fluorinated surfactants,containing sulfonyl amido group as the spacer,with two fluorocarbon chains in one surfactant molecule were obtained;through the reaction of perfluorooctanoic acid with polyhydric alcohols (glycol,1,2 - propanediol,glycerol and pentaerythrite),the oil - soluble fluorinated surfactants,containing ester group as the spacer with two,three and four fluorocarbon chains in one surfactant molecule were obtained respectively. The surface activity of the two series of fluorinated surfactants in ethanol, ethyl acetate,butanone and the ternary mixed solvent of ethanol,ethyl acetate and butanone were studied. The effects of molecular structure of surfactants and the type of organic solvent on their surface activity were observed. The results showed that there was no simple inevitability between surface tension reduction and the number of fluorocarbon tails. The configuration of the whole molecule was also important,and the type of these polar organic solvents could have significant influences on the surface tension of such surfactant solution.关键词
油溶性氟表面活性剂/有机溶剂/非水体系/表面张力/碳氟链Key words
oil - soluble fluorinated surfactant/organic solvent/non - aqueous system/surface tension/fluorocarbon chain分类
化学工程引用本文复制引用
陈现涛,邢航,伍毅,肖进新..双尾及多尾氟表面活性剂在有机溶剂中的表面活性研究[J].日用化学工业,2016,46(8):441-446,6.基金项目
中国民用航空局科技创新引导项目 （）
