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测定了在30℃、总离子强度为0.1m时不同比例混合的十烷基硫酸钠(C_(10)SN_a)-全氟辛酸钠(7CFNa)在四氯乙烯-水界面的界面张力,研究混合溶液的界面性质及胶团形成,结果表明:(1) 7CFNa与C_(10)SNa在混合溶液中,基本上各自独立形成胶团;(2)混合表面活性剂在四氯乙烯-水界面上的吸附与在正庚烷-水界面上吸附规律相同;(3) 测定C_(10)SNa、7CFNa在不同油-水界面上的界面张力,证实碳氟链与碳氯链之间具有“互憎性”。
The interfacial tension of sodium decafluorosulfate (C_ (10) SN_a) - perfluorooctanoate (7CFNa) at the tetrachlorethylene-water interface was measured at 30 ℃ and the total ionic strength was 0.1m. The results show that: (1) 7CFNa and C_ (10) SNa form micelles almost independently in the mixed solution; (2) Adsorption of mixed surfactants on the tetrachlorethylene-water interface (3) The interfacial tension of C_ (10) SNa, 7CFNa at different oil-water interface was confirmed, and it was confirmed that there was “mutual-hateness between fluorocarbon chain and carbon chain ”.