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Composite membranes based on gellan and poly(N-vinylimidazole) were prepared by using the method of solvent evaporation. In acid medium ionic interactions are established and evidenced by measurements of FTIR spectroscopy. The properties of these membranes were investigated by using elemental analysis, thermogravimetric analysis, atomic force microscopy and dynamic swelling experiments. The thermic...
Le travail concerne l'etude de la compatibilite en solutions diluees des deux polymeres naturels qui presentent charactere polyelectrolytiques - xanthane et gelatine. On a etudie l'influence du pH, de la temperature et du rapport massique des polymeres sur la compatibilite. A l'aide des mesures viscometriques et des constantes Huggins on a estime la compatibilite et la nature des interactions interpolymeres...
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