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Engineering mixed surfactant systems to template hierarchical nanoporous materials

Et-Tarhouni, Zaineb 2015. Engineering mixed surfactant systems to template hierarchical nanoporous materials. PhD Thesis, Cardiff University.
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Abstract

The mixing of the hydrocarbon surfactant cetyltrimethyl ammonium bromide (CTAB) and the fluorocarbon surfactant, Zonyl-FSN-100 with the average chemical structure of C8F17C2H4 (OC2H4)9OH, is quantified. The critical micelle concentration (CMC), the size and shape of the micelles and their composition have been investigated by surface tension, fluorescence, small-angle neutron scattering (SANS), electron paramagnetic resonance (EPR), pulsed-gradient spin-eco NMR spectroscopy (PGSE-NMR), 1H-NMR and 19F-NMR. The pure surfactant aqueous solutions and the mixtures have also been studied in the presence of hydrocarbon oil (hexane) and fluorocarbon oil (perfluorohexane, PFH) in order to investigate the swollen micelle shape and structure. The surfactants mix nonideally except for a degree of ideality at some CTAB mole fraction (0.5 > αCTAB > 0.7). The pure surfactant FSN-100 forms disc-like micelles with a small aggregation number (

Item Type: Thesis (PhD)
Status: Unpublished
Schools: Chemistry
Subjects: Q Science > QD Chemistry
Date of First Compliant Deposit: 30 March 2016
Last Modified: 30 Mar 2017 01:30
URI: http://orca-mwe.cf.ac.uk/id/eprint/87183

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