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Solvent-polymer interactions in associative polymer/aqueous media systems

Abstract : Light scattering measurements in the dilute regime (C < C*) of the amphiphilic hydrophobically modified hydroxyethyl cellulose (HMHEC) have shown a metastable equilibrium of solubility in pure water. As a consequence such ageing solutions present a great instability and in severe conditions of added NaCl or temperature, a demixion has been evidenced. In a more concentrated range of concentration, aqueous solutions of HMHEC possess higher viscosity than HEC precursor due to intermolecular hydrophobic associations. But in a 1M NaCl/ethanol mixture this effect is greatly weakened.
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Luc Picton, Guy Muller. Solvent-polymer interactions in associative polymer/aqueous media systems. Macromolecular Symposia, Wiley-VCH Verlag, 1997, 114 (1), pp.133 - 138. ⟨10.1002/masy.19971140115⟩. ⟨hal-01866929⟩



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