Studies on the Aggregation and Interaction of DDAPS Micelles with Fluorescence and Light-Scattering Methods

Abstract

Abstract: Steady fluorescence and dynamic light-scattering measurement were reported for dodecyldimethylammoniopropanesulfonate(DDAPS)/NaCl aqueous micellar system. The results show that the aggregation number and the hydrodynamic radius of DDAPSmicelles increase slightly with the increasing of NaCl concentration and decrease slightly as the temperature rises. For the zwitterionic surfactant system we infer repulsive intermicellar interactions in spite of the absence of net charges. DDAPSbehaves somewhat like an ionic surfactant. Within the scope of our investigation, DDAPSmicelles exist in spherical shape.

Key words: Dodecyldimethylammoniopropanesulfonate, Aggregation number, Hydrodynamic radius, Fluorescence, Light-scattering

CLC Number:

O648

TrendMD:

LI Fang, LI Gan-Zuo, WANG Han-Qing, An Ying-Li. Studies on the Aggregation and Interaction of DDAPS Micelles with Fluorescence and Light-Scattering Methods[J]. Chem. J. Chinese Universities, 1998, 19(7): 1117.

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Studies on the Aggregation and Interaction of DDAPS Micelles with Fluorescence and Light-Scattering Methods

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