Surface activity and micellar properties of anionic gemini surfactants and their analogues.

Citation:

Ben-Moshe M, Magdassi S. Surface activity and micellar properties of anionic gemini surfactants and their analogues. Colloids Surf., AColloids and Surfaces, A: Physicochemical and Engineering Aspects. 2004;250 (1-3) :403 - 408.

Date Published:

2004///

Abstract:

The properties of didodecyldiphenylether disulfonate gemini-type surfactants were studied and compared to mono-alkylated and monosulfonated analogous surfactants. Dynamic and equil. surface tension measurements indicate that the gemini surfactants have a higher surface activity compared to that of the monoalkyl analogs. The gemini-type surfactants have much larger surface area per mol., opposite effect of C no. on CMC and considerable swelling of the micelles upon increasing surfactant concn. Detn. of aggregation nos. by fluorescence measurements reveals that the longer chain gemini surfactants form micelles having <10 mols. per micelle. [on SciFinder(R)]