物理化学学报 >> 2006, Vol. 22 >> Issue (08): 913-916.doi: 10.1016/S1872-1508(06)60039-9

通讯    下一篇

聚电解质和表面活性剂混合体系中多价金属离子诱导的囊泡聚集

么敬霞;赵颖;黄建滨   

  1. 北京大学化学学院 北京 100871
  • 收稿日期:2006-04-27 修回日期:2006-05-19 发布日期:2006-08-04
  • 通讯作者: 黄建滨 E-mail:JBHuang@pku.edu.cn

Multivalent Metal Ion Induced Vesicle Aggregation in Aqueous Polyelectrolyte-surfactant System

YAO Jing-Xia;ZHAO Ying;HUANG Jian-Bin   

  1. State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
  • Received:2006-04-27 Revised:2006-05-19 Published:2006-08-04
  • Contact: HUANG Jian-Bin E-mail:JBHuang@pku.edu.cn

摘要:

利用浊度和电镜观察等方法研究了水解的苯乙烯-马来酸酐共聚物(SMA)和十二烷基三乙基溴化铵(DEAB)混合体系中多价金属离子诱导的囊泡聚集现象. 提出了关于多价金属离子诱导囊泡聚集的机理.

关键词: 囊泡, 囊泡聚集, 多价金属离子, 聚电解质鄄表面活性剂混合体系

Abstract:

The vesicle aggregation induced by multivalent metal ions in the mixed system of polyelectrolyte(hydrolyzed random copolymer of maleic anhydride-styrene, SMA)-surfactant(dodecyltriethylammonium bromide, DEAB) was investigated through transmission electron microscopy (TEM) observation and turbidity measurement. It was found that a small quantity of Ca2+ (in the magnitude of 10-4 mol·L-1) can induce vesicle aggregation. Adding EDTA can dissociate the vesicle aggregation. Further investigation suggested that the vesicle aggregation followed the salt-linkage mechanism.

Key words: Vesicle, Vesicle aggregation, Multivalent metal ion, Polyelectrolyte-surfactant system