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Cloud point, auto-coacervation, and nematic ordering of micelles formed by ethylene oxide containing carboxylate surfactants

Denk, Patrick ; El Maangar, A. ; Prévost, S. ; Menezes da Silva, Wagner ; Gschwind, Ruth Maria ; Zemb, T. ; Kunz, Werner



Abstract

Hypothesis: In a recent paper, we determined the phase behavior of an aqueous solution of octyl ether octaethylene oxide carboxylic acid ([H+][C8E8c(+/-)], Akypo (TM) LF2) and with partial replacement of H+ by Na+ and Ca2+. It was found that even the neat surfactants are liquid at room temperature and that they form only direct micelles for any aqueous content and over large temperature ranges. ...

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