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Citation: JIANG Rong, ZHAO Jian-Xi, ZHANG Guo-Cheng, YOU Yi. Study of Micellization of C₁₂-2-E_n-C₁₂•2Br and SDS Mixed Aqueous Solutions[J]. Acta Physico-Chimica Sinica, ;2005, 21(01): 6-9. doi: 10.3866/PKU.WHXB20050102 shu

Study of Micellization of C₁₂-2-E_n-C₁₂•2Br and SDS Mixed Aqueous Solutions

1.
Department of Chemistry, Fuzhou University, Fuzhou　350002

Received Date: 25 May 2004
Available Online: 15 January 2005

With increasing the number of oxyethylene groups in the spacer of [C12H25N＋(CH3)2]2C2H4(OC2H4)n•2Br－(C12-2-En-C12•2Br, n=2,3), the homogeneous regions in the phase diagrams of aqueous mixture of C12-2-En-C12•2Br with C12H25SO4Na (SDS) expand obviously in comparison with that of [C12H25N＋(CH3)2CH2]2•2Br－/SDS mixed system. There exists a synergism between C12-2-En-C12•2Br and SDS during the mixed micellization. The minimum critical micelle concentration (cmcT,min) in the homogeneous region is 0.0339 mmol•L－1 and the corresponding molar fraction (x2*) of SDS in the bulk solution is 0.447 estimated by Rosen theory. At x2=0.5, the corresponding molar fraction (x2M) in the mixed micelle and the total aggregation number (NT) are 0.43 and 36 respectively.
- C₁₂-2-E_n-C₁₂•2Br;SDS;Phase behavior;Mixed micellization;Synergism
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Study of Micellization of C12-2-En-C12•2Br and SDS Mixed Aqueous Solutions

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通讯作者: 陈斌, bchen63@163.com

Study of Micellization of C₁₂-2-E_n-C₁₂•2Br and SDS Mixed Aqueous Solutions