COMPLEXATION BETWEEN POLY(HYDROXYETHER OF BISPHENOL-A) AND 3 TERTIARYAMIDE POLYMERS

The complexation behaviour between poly(hydroxyether of bisphenol-A) ( phenoxy) and three isomeric tertiary amide polymers, namely poly(N-met hyl-N-vinylacetamide) (PMVAc), poly(N,N-dimethylacrylamide) (PDMA) and poly(2-ethyl-2-oxazoline) (PEOx), has been studied. Phenoxy forms int erpolymer complexes with PMVAc and PDMA from tetrahydrofuran solutions over the entire feed composition range. However, complexation does no t occur between phenoxy and PEOx from THF solutions, indicating a weak er intermolecular association in the phenoxy/PEOx blends than those in the phenoxy/PMVAc and phenoxy/PDMA blends. When using N,N-dimethylfor mamide as the solvent, only miscible blends are formed between phenoxy and all three tertiary amide polymers. Infra-red spectroscopic studie s provide evidence of intermolecular hydrogen bonding between the hydr oxyl groups in phenoxy and the carbonyl groups in tertiary amide polym ers. The frequency shifts for the phenoxy hydroxyl group hydrogen bond ed to the three tertiary amide polymers decrease in the order of PMVAc --> PDMA --> PEOx. Copyright (C) 1996 Elsevier Science Ltd.