| β-环糊精与十二烷基硫酸钠的包结作用 |
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| 引用本文： | 王亚珍,吴天奎.β-环糊精与十二烷基硫酸钠的包结作用[J].江汉大学学报(自然科学版),2009,37(1). |
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| 作者姓名： | 王亚珍 吴天奎 |
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| 作者单位： | 江汉大学,化学与环境工程学院,武汉,430056 |
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| 基金项目： | 江汉大学校级教研项目 |
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| 摘 要： | 用表面张力法研究了-环糊精(β-CD)与十二烷基硫酸钠(SDS)在水溶液中的包结作用.通过固定SDS的浓度,改变溶液中β-CD的浓度,发现体系的表面张力随β-CD浓度的增加而增加到一稳定值.实验发现溶液中加入β-CD时表面张力比不加入β-CD要大,但在临界胶束浓度以上,各体系的表面张力值均相同.表明水溶液中β-CD及其与SDS形成的包结物都没有表面活性,且临界胶束浓度与β-CD的浓度存在一定的线性关系.用数学方法计算出了β-CD与SDS形成1:1型包结物的包合常数.
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| 关 键 词： | 表面张力 β-环糊精 十二烷基硫酸钠 包结常数 |
Inclusion Interaction Between β-cyclodextrin and Sodium Dodecyl Sulfonate |
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| WANG Ya-zhen,WU Tian-kui.Inclusion Interaction Between β-cyclodextrin and Sodium Dodecyl Sulfonate[J].Journal of Jianghan University:Natural Sciences,2009,37(1). |
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| Authors: | WANG Ya-zhen WU Tian-kui |
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| Abstract: | Inclusion interaction of β-cyclodextrin(β-CD) with sodium dodecyl sulfonate(SDS) based on surface tension measurements was studied.The surface tension increases with in-creasing concentrations of β-CD to a maximum value when fixing the amount of SDS.The surface tension curves of the SDS solution in the presence of β-CD are higher than those in the absence of β-CD.The experimental results indicated that β-CD and the inclusion complexes have no surface ac-tivity.The critical micelle concentrations(CMC) of SDS increase linearly with the increase of β-CD.The inclusion constant for β-CD-SDS inclusion complex was calculated. |
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| Keywords: | surface tension β-cyclodextrin sodium dodecyl sulfonate inclusion constant |
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