Interaction between β-Cyclodextrin and Mixed Cationic-Anionic Surfactants (1): Thermodynamic Study

被引：10
|
作者：
Yan, Peng [1 ,2 ,3 ]
Tang, Jiao-Ning [4 ]
Xiao, Jin-Xin [1 ,5 ]
机构：
[1] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Beijing 100871, Peoples R China
[2] Adm Comm Zhongguancun, Beijing, Peoples R China
[3] P&G, Beijing Tech Ctr, Beijing, Peoples R China
[4] Shenzhen Univ, Shenzhen Key Lab Special Funct Mat, Shenzhen, Peoples R China
[5] Beijing FLUOBON Surfactant Inst, Beijing, Peoples R China
来源：
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY | 2007年 / 28卷 / 04期
基金：
中国国家自然科学基金;
关键词：
beta-Cyclodextrin; cationic-anionic surfactants; surface tension; inclusion complex;
D O I：
10.1080/01932690701282708
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The interactions between beta-cyclodextrin (beta-CD) and the mixtures of cationic-anionic surfactants in aqueous solution were investigated by surface tension and H-1 NMR measurements. It was shown that the critical micelle concentration (cmc) increased linearly with the increase of beta-CD concentration. Furthermore, beta-CD formed 1 : 1 inclusion complex with both cationic and anionic surfactants in the mixed surfactant systems, and no significant selective inclusion was observed. The thermodynamic parameters of the inclusion process of beta-CD to mixed cationic-anionic surfactants were calculated by a numerical method based on the surface tension measurements, and it was found that the inclusion process was both enthalpy and entropy favorable.
引用
收藏
页码：617 / 621
页数：5
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