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The Interaction of Sodium Dodecylsulfate with (Hydroxypropyl)Cellulose

1990; Springer Nature; Volume: 22; Issue: 6 Linguagem: Inglês

10.1295/polymj.22.482

1349-0540

Françoise M. Winnik, Mitchell A. Winnik,

Photochemistry and Electron Transfer Studies

(Hydroxypropyl)cellulose (HPC) in aqueous solution interacts with sodium dodecylsulfate (SDS) to give micelle-like SDS clusters bound to the polymer at concentrations well below the critical micelle concentration of SDS itself. We have used the steady-state fluorescence quenching method (fluorophore: pyrene, quencher: benzophenone) to determine mean aggregation numbers (N̅, molecules of SDS per cluster) for the system. These N̅ values vary with both surfactant and HPC concentrations. The data are consistent with a constant number of cluster binding sites per polymer. These clusters increase in size as the ratio of SDS to HPC is increased. This behavior is very different from that described for the interaction of SDS with poly(ethylene oxide).