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Citation: Zhao Jian-Xi, Zhu Yong-Ping, You Yi, Cai Wei-Rong. Mixed Micellization of C₁₂-s-C₁₂•2Br and n-Hexanol in Aqueous Solution[J]. Acta Physico-Chimica Sinica, ;2003, 19(06): 557-559. doi: 10.3866/PKU.WHXB20030616 shu

Mixed Micellization of C₁₂-s-C₁₂•2Br and n-Hexanol in Aqueous Solution

1.
College of Chemistry and Chemical Engineering,Fuzhou University,Fuzhou,350002

Received Date: 2 September 2002
Available Online: 15 June 2003

The effects of n-hexanol on the micellization of quaternary ammonium dimeric surfactants (C12-s-C12•2Br,s=3,4,6) have been examined using conductivity and steady fluorescence measurements.The results showed that the critical micelle concentration cmc decreases with the addition of n-hexanol.The larger s,the stronger the effect.The dimeric surfactant and n-hexanol form the mixed micelles with the alkyl chains of n-hexanol molecules penetrating into the micelle interior and with hydroxyl groups lie in the palisade layer of the micelle.At the same concentration of n-hexanol in aqueous solution,the molar fraction of n-hexanol in the mixed micelle is almost the same for different s.The ionization degree of the mixed micelle increases with increasing n-hexanol concentration.
- Quaternary-ammonium dimeric surfactants;n-hexanol effects;　Micellization
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Mixed Micellization of C12-s-C12•2Br and n-Hexanol in Aqueous Solution

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通讯作者: 陈斌, bchen63@163.com

Mixed Micellization of C₁₂-s-C₁₂•2Br and n-Hexanol in Aqueous Solution