物理化学学报 >> 2001, Vol. 17 >> Issue (04): 314-318.doi: 10.3866/PKU.WHXB20010407

研究论文 上一篇    下一篇

β-CD对SDS胶束生成与特性的影响

郭荣;朱小军;宋根萍   

  1. 扬州大学理学院化学系,扬州 225002
  • 收稿日期:2000-08-28 修回日期:2000-11-30 发布日期:2001-04-15
  • 通讯作者: 郭荣 E-mail:guorong@yzu.edu.cn

Effect ofβ-CD on the Formation and the Properties of SDS Micelle

Guo Rong;Zhu Xiao-Jun;Song Gen-Ping   

  1. Chemistry Department ,Yangzhou University ,Yangzhou 225002
  • Received:2000-08-28 Revised:2000-11-30 Published:2001-04-15
  • Contact: Guo Rong E-mail:guorong@yzu.edu.cn

摘要: 通过胶束的扩散系数D、聚集数N和β-CD在SDS胶束与水连续相间的分配系数P的测定,研究了β-CD对SDS胶束特性的影响.结果表明,β-CD浓度较小时,随着β-CD的加入,其在SDS胶束相中的分配增大,胶束的扩散系数D与聚集数N均降低.β-CD浓度较大时,其在水连续相中的分配增加,对SDS胶束的扩散系数D与聚集数N的影响显著降低.SDS浓度小于第一CMC,β-CD与SDS单体形成1∶1的包合物;SDS浓度大于第一CMC,β-CD与SDS形成1:8的混合球形胶束.

关键词: β-CD, 扩散系数, 聚集数, 结合常数, 分配系数

Abstract: The effect ofβ-CD on the properties of SDS micelle was studied by the determination of the diffusion coefficient D and the aggregation number N of SDS micelle,and the distribution coefficient ofβ-CD between the micellar phase and the continuous water phase. The results show that the distribution ofβ-CD in the micellar phase increases and the diffusion coefficient D and the aggregation number N will decrease with addedβ-CDwhen the concentration ofβ-CD is lower. The distribution ofβ-CD in the continuous water phase increases and the influence ofβ-CD on D and N are reduced remarkably when the concentration ofβ-CD is higher. When the SDS concentration is less than the first CMC,the inclusion compounds ofβ-CD with SDS monomer form in the molecular ratio of 1∶1. Mixed spherical micelle could be prepared in the molecular ratio of 1:8 forβ-CD/SDS when the SDS concentration is higher than the first CMC.

Key words: β-CD, Diffusion coefficient, Aggregation number, Binding constant,  Distribution coefficient