The Effect of 2,2,3,3,4,4,4-Heptafluorobutanol on Surface Activity and Counterion Binding Degree of Cationic Surfactants C10H21N(CH3)3Br and C12H25N(CH3)3 Br Aqueous Solutions

Chem. J. Chinese Universities ›› 1994, Vol. 15 ›› Issue (8): 1190.

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The Effect of 2,2,3,3,4,4,4-Heptafluorobutanol on Surface Activity and Counterion Binding Degree of Cationic Surfactants C₁₀H₂₁N(CH₃)₃Br and C₁₂H₂₅N(CH₃)₃ Br Aqueous Solutions

DING Hui-Jun, GU Yan-Liang, ZHANG Lan-Hui, ZHAO Guo-Xi

Institute of Physical Chemistry, Peking University, Beijing, 100871

Received:1993-08-04 Revised:1993-12-24 Online:1994-08-24 Published:1994-08-24

Abstract

Abstract: The surface and micelle properties of C₁₀H₂₁N(CH₃)₃Br/C₃F₇CH₂OH and C₁₂H₂₅N (CH₃)₃Br/C₃F₇CH₂OH aqueous solutions are investigated by surface tension and electromorive force methods. The results show that the surface activity of solution is increased and the counterion binding degree of micelle is decreased when C₃F₇CH₂OH is added into cationic surfactant aqueous solution. The latter differs from that of anionic surfactant/C₃F₇CH₂OH systems, which should be due to the acidity of C₃F₇CH₂OH.

Key words: Fluorocarbon alcohol, Cationic surfactant, Counterion binding degree, Surface activity

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DING Hui-Jun, GU Yan-Liang, ZHANG Lan-Hui, ZHAO Guo-Xi. The Effect of 2,2,3,3,4,4,4-Heptafluorobutanol on Surface Activity and Counterion Binding Degree of Cationic Surfactants C₁₀H₂₁N(CH₃)₃Br and C₁₂H₂₅N(CH₃)₃ Br Aqueous Solutions[J]. Chem. J. Chinese Universities, 1994, 15(8): 1190.

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The Effect of 2,2,3,3,4,4,4-Heptafluorobutanol on Surface Activity and Counterion Binding Degree of Cationic Surfactants C₁₀H₂₁N(CH₃)₃Br and C₁₂H₂₅N(CH₃)₃ Br Aqueous Solutions

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