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Quantifying the micellar structure formed from hydrocarbon-fluorocarbon surfactants

Et-Tarhouni, Zaineb, Carter, Emma ORCID:, Murphy, Damien Martin ORCID:, Griffiths, P. C., Mansour, O. T., King, S. M. and Paul, Alison ORCID: 2016. Quantifying the micellar structure formed from hydrocarbon-fluorocarbon surfactants. Colloids and Surfaces A: Physiochemical and Engineering Aspects 492 , pp. 255-262. 10.1016/j.colsurfa.2015.12.015

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Many technological formulations contain mixtures of surfactants, each contributing some distinct property. Characteristics of each surfactant are often modulated in the mixture, based on the interactions between the various components present. Here, the mixing of the hydrocarbon surfactant cetyltrimethyl ammonium bromide (C16TAB) and the fluorocarbon surfactant, Zonyl-FSN-100 with average chemical structure of C8F17C2H4 (OC2H4)9OH, is quantified, in particular, the size and shape of the micelles and their critical micelle concentration (CMC). The CMC data suggest there are specific interactions between the two components which are strongly antagonistic. Small-angle neutron scattering (SANS) has been used to quantify the size and shape of the micelle, and these data indicate that the single component FSN-100 forms disc-like micelles with a small aggregation number (∼65) and the C16TAB forms globular, charged micelles with a larger aggregation number (135). The aggregation number of the mixed micelle is substantially greater than either of the pure species. Overall, a detailed study of CTAB, FSN-100 and their mixture systems will be presented in this paper.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Publisher: Elsevier
ISSN: 9277-7757
Date of Acceptance: 14 December 2015
Last Modified: 18 Nov 2022 03:17

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