Surface Activities of aqueous mixtures of cationic anionic fluorocarbon hydrocarbon surfactants, F[CF(CF 3)CF 2O] 2CF(CF 3)CONH(CH 2) 3N(C 2H 5) 2CH 3I/C nH 2n+1 COONa (n=7,9,11,13) and F[CF(CF 3)CF 2O] 2CF(CF 3)COONa...Surface Activities of aqueous mixtures of cationic anionic fluorocarbon hydrocarbon surfactants, F[CF(CF 3)CF 2O] 2CF(CF 3)CONH(CH 2) 3N(C 2H 5) 2CH 3I/C nH 2n+1 COONa (n=7,9,11,13) and F[CF(CF 3)CF 2O] 2CF(CF 3)COONa/C nH 2n+1 N(CH 3) 3Br(n=8,10,12),were investigated.It was showed that,counter charged hydrocarbon surfactants increase the efficiency and in some cases the effect of fluorocarbon surfactants was to decrease surface tension of aqueous solution.However,surface activity of fluorocarbon surfactants is decreased if the length of hydrocarbon chains is longer than that of fluorocarbon chains.展开更多
以全氟辛基碘乙烷(C8F17CH2CH2I)为原料,通过格氏反应,得到全氟辛基丙酸(C8F17CH2CH2COOH),进而通过酰氯化、酰胺化和季铵化等多步反应得到一种阳离子型氟表面活性剂C8F17(CH2)2CONH(CH2)3N+(CH3)3I-,用IR,1HNMR和19FNMR对其结构进行了...以全氟辛基碘乙烷(C8F17CH2CH2I)为原料,通过格氏反应,得到全氟辛基丙酸(C8F17CH2CH2COOH),进而通过酰氯化、酰胺化和季铵化等多步反应得到一种阳离子型氟表面活性剂C8F17(CH2)2CONH(CH2)3N+(CH3)3I-,用IR,1HNMR和19FNMR对其结构进行了表征。测试了其水溶液及其0.1 mol/L Na Cl水溶液的表面张力、在石蜡表面的接触角以及泡沫性能。结果表明,该氟表面活性剂在室温下具有极高的表面活性,且其泡沫性能及润湿性与传统碳氢阳离子表面活性剂C12H25N+(CH3)3Cl-相比,均更为优异。展开更多
文摘Surface Activities of aqueous mixtures of cationic anionic fluorocarbon hydrocarbon surfactants, F[CF(CF 3)CF 2O] 2CF(CF 3)CONH(CH 2) 3N(C 2H 5) 2CH 3I/C nH 2n+1 COONa (n=7,9,11,13) and F[CF(CF 3)CF 2O] 2CF(CF 3)COONa/C nH 2n+1 N(CH 3) 3Br(n=8,10,12),were investigated.It was showed that,counter charged hydrocarbon surfactants increase the efficiency and in some cases the effect of fluorocarbon surfactants was to decrease surface tension of aqueous solution.However,surface activity of fluorocarbon surfactants is decreased if the length of hydrocarbon chains is longer than that of fluorocarbon chains.
文摘以全氟辛基碘乙烷(C8F17CH2CH2I)为原料,通过格氏反应,得到全氟辛基丙酸(C8F17CH2CH2COOH),进而通过酰氯化、酰胺化和季铵化等多步反应得到一种阳离子型氟表面活性剂C8F17(CH2)2CONH(CH2)3N+(CH3)3I-,用IR,1HNMR和19FNMR对其结构进行了表征。测试了其水溶液及其0.1 mol/L Na Cl水溶液的表面张力、在石蜡表面的接触角以及泡沫性能。结果表明,该氟表面活性剂在室温下具有极高的表面活性,且其泡沫性能及润湿性与传统碳氢阳离子表面活性剂C12H25N+(CH3)3Cl-相比,均更为优异。