Strong synergistic effect of cationic hydrocarbon surfactant and novel nonionic tri-block short-chain fluorocarbon surfactant mixtures on surface activity, wettability and solubilization  

作　　者：Yutang Zhou Yong Jin Yichao Shen Liangjie Shi Shuangquan Lai Yujia Tang 

机构地区：[1]Key Laboratory of Leather Chemistry and Engineering of Ministry of Education,Sichuan University,Chengdu 610065,People’s Republic of China [2]National Engineering Research Center of Clean Technology in Leather Industry,Sichuan University,Chengdu 610065,People’s Republic of China

出　　处：《Journal of Leather Science and Engineering》2021年第1期245-259,共15页皮革科学与工程（英文）

基　　金：National Natural Science Foundation of China(No.22078207);Sichuan Science and Technology Program(2021ZHCG0042);Fundamental Research Funds for the Central Universities(China).

摘　　要：Mixing hydrocarbon surfactants with fluorocarbon surfactants is still an important strategy to improve the economic benefits and performances of fluorocarbon surfactants and expand their range of application.Herein,we prepared a novel kind of hydrocarbon-fluorocarbon surfactant mixtures via mixing a cationic surfactant,cetyltrimethylammonium bromide(CTAB),with a tri-block nonionic short-chain fluorocarbon surfactant(F_(9)EG_(13)F_(9))in aqueous solution.The results showed that adding a small CTAB amount to F_(9)EG_(13)F_(9)(the molar fraction of CTAB in the mixture(x_(1))was 0.2)could greatly reduce its critical micelle concentrations(cmc)from 0.408mmol/L to 0.191 mmol/L.At this x_(1),the contact angle of the mixture was the minimum(57.7°)at 100 s on polytetrafluoroethylene film,which was even lower than that of F_(9)EG_(13)F_(9).Besides,CTAB/F_(9)EG_(13)F_(9) mixtures possessed better colloidal stability and solubilization ability toward hydrophobic dye(SudanІ)than F_(9)EG_(13)F_(9).The outstanding performances of binary surfactant mixtures benefited from the non-ideal mixing and strong synergistic effect evidence that CTAB/F_(9)EG_(13)F_(9) surfactant mixtures could be used in practical applications instead of individual F_(9)EG_(13)F_(9),thereby reducing the used cost of F_(9)EG_(13)F_(9).

关 键 词：Short-chain fluorocarbon surfactant Hydrocarbon surfactant Cationic-nonionic mixtures Surface activity WETTABILITY SOLUBILIZATION 

分 类 号：O64[理学—物理化学]