In this work, it was studied the behavior of the nonionic surfactant aqueous solutions, containing or not a hydrotropic agent, by resonance magnetic nuclear (NMR). We have studied monofunctional diblock copolymers of poly(propylene oxide-ethylene oxide) (R-PPO-PEO-OH, where R length is linear C4) as nonionic surfactant and sodium p-toluenesulfonate (NaPTS) as hydrotropic agent. The critical micelle concentration (CMC) of the aqueous copolymer solution was obtained from 1H-NMR. The preliminary study of the interaction between the copolymer, under the unimer and micelle forms, and the hydrotrope, in aqueous solutions, was evaluated by 1H-NMR and 13C-NMR.
|Translated title of the contribution||Surfactant/hydrotrope interaction in aqueous systems by nuclear magnetic resonance oxide, hydrotropy, nuclear magnetic resonance|
|Number of pages||8|
|State||Published - Jan 2001|
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