Properties of dilute and semi-dilute solutions of a poly (ether imide), used to form asymmetric membranes, are investigated from viscosity measurements. Several solvents are considered. The analysis of experimental results suggests the existence of associated polymer chains in pyridine. Association is found to occur also in a binary N-methylpyrrolidone/water solvent with various concentrations of water. Electron donors and electron acceptors are carried by monomeric units; their interactions are supposed to give rise to the association of polymer chains.
Посилання на статтю:
Viscosity behaviour of poly(ether imide) in solution: intramolecular interaction and intermolecular association effects / A. Viallat*, R. Pedro Born and J. P. Cohen Addad // Polymer. – 1992. – Vol 33. – P. 4379-4383.