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Citation: YAO Jing-Xia, ZHAO Ying, HUANG Jian-Bin. Multivalent Metal Ion Induced Vesicle Aggregation in Aqueous Polyelectrolyte-surfactant System[J]. Acta Physico-Chimica Sinica, ;2006, 22(08): 913-916. doi: 10.1016/S1872-1508(06)60039-9 shu

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

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 Date: 27 April 2006
Available Online: 7 July 2006

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.
- Vesicle;Vesicle aggregation;Multivalent metal ion;Polyelectrolyte-surfactant system
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