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Polymeric micelle disruption by cosolvents and anionic surfactants

Jangher, Abdulhakim, Griffiths, Peter Charles, Paul, Alison, King, S. M., Heenan, R. K. and Schweins, R. 2011. Polymeric micelle disruption by cosolvents and anionic surfactants. Colloids and Surfaces A: Physicochemical and Engineering Aspects 391 (1-3) , pp. 88-94. 10.1016/j.colsurfa.2011.08.006

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Abstract

Polymeric surfactants are frequently used to solubilise sparingly water soluble additives, often in conjunction with non-polymeric surfactants and cosolvents. Here, the structure of micelles formed by one such polymeric surfactant, Pluronic P123, have been characterised in the presence of the anionic surfactant sodium dodecylsulphate (SDS) and ethanol. In binary mixtures, with increasing ethanol concentration, the critical micelle concentration (CMC) of P123 increases whereas that for SDS decreases, yet the aggregation number of both micelles decrease. In the ternary system the effects of the ethanol on the mixed P123/SDS micelle are non-specific, merely moderating the behaviour to reflect the solvent polarity, except at low P123 concentrations where the addition of the anionic surfactant disrupts the structure of the polymeric micelle. This study into polymer/surfactant complexation in the presence of cosolvents highlights the complex behaviour of formulated products.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: Pluronic micelle disruption; Polymeric surfactant; Cosolvent; Scattering
Additional Information: 18th International Symposium on Surfactants in Solution (SIS)
Publisher: Elsevier
ISSN: 0927-7757
Last Modified: 04 Jun 2017 02:55
URI: http://orca-mwe.cf.ac.uk/id/eprint/13848

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