Hydrolysis of p-nitrophenyl perfluoroctanoate in mixed surfactant systems
作者： María Florencia Torres , Rita H. de Rossi , Mariana A. Fernández
DOI: 10.1039/C4RA02888K
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摘要: The kinetics of the hydrolysis reaction p-nitrophenyl perfluoroctanoate were studied in presence different amphiphilic systems: two hydrocarbon surfactants (sodium dodecyl sulfate, SDS, and polyoxyethylene(23)lauryl ether, Brij-35), a perfluorinated detergent (perfluorononanoic acid, PFNA) mixtures SDS–PFNA Brij-35–PFNA. study was performed at compositions (characterized by molar fraction PFNA, αPFNA), for each αPFNA concentration varied over wide range. kinetic probe showed very strong interaction with surfactants. In mixed surfactants, behaviour changed dramatically composition mixtures, which indicates that this substrate is sensitive to effect micellar media, being good molecule these types surfactant systems. use ester allowed us confirm aggregates mixture Brij-35–PFNA as previously observed other techniques. hydrocarbon-rich micelles low αPFNA, well rich high also confirmed. fully agreed our previous description formed system. practically pure PFNA micelle could be demonstrated from results.
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