INTERMACROMOLECULAR COMPLEXATION DUE TO SPECIFIC INTERACTIONS .4. THEHYDROGEN-BONDING COMPLEX OF VINYLPHENOL-CONTAINING COPOLYMER AND VINYLPYRIDINE-CONTAINING COPOLYMER

The complexation of poly(styrene-co-vinylphenol) (STVPh) and poly(styr ene-co-vinylpyridine) (STVPy) in nonaqueous solution was investigated with emphasis on the effect of the hydroxyl and pyridyl contents in th e component polymers. Viscometry, nonradiative energy transfer fluoros pectroscopy, and dynamic laser light scattering have led to the same c onclusion, i.e., STVPh and STVPy blend can form an interpolymer comple x due to hydrogen bonding in tetrahydrofuran, butanone, and chloroform , provided the contents of the hydroxyl and pyridyl reach certain resp ective levels. The size distribution of the complex aggregates is rela tively narrow with a peak size 1 order of magnitude larger than those of the component polymer coils. The minimum content of the interaction groups required for complexation strongly depends on the solvent used . Chloroform and butanone are almost inert for hydrogen bonding betwee n the polymers, tetrahydrofuran has a substantial influence on complex ation, and addition of N,N-dimethylformamide into the dispersion of co mplex aggregates in THF even causes decomplexation.