INTERMOLECULAR INTERACTION AND MISCIBILITY OF BLENDS OF POLY(VINYLPYRIDINES) WITH POLY(VINYL BUTYRAL)

Intermolecular interaction in blends of poly-(4-vinyl pyridine) or pol y-(2-vinyl-5-methyl pyridine) with poly(vinyl butyral) of various comp osition was studied by means of IR-spectroscopy. It was shown that int ermolecular hydrogen bonds between hydroxyl groups of poly(vinyl butyr al) and pyridine groups was formed in these blends and as a result the last ones are protonated one way or another. All blends studied are c haracterized by the only glass transition temperature which dispose be tween of the glass transition temperatures of individual polymers. On this basis the conclusion was done about miscibility of poly(vinyl but yral) with studied poly(vinyl pyridines).