The study of miscibility processes of binary polymer mixtures on acrylonitrile basis by X-ray scattering

Employing X-ray scattering, the phase morphology and the miscibility of two mixtures formed from acrylonitrile-vinylacetate-alpha-methylstyrene copoly mer with both styrene-acrylonitrile copolymer and cellulose acetate have be en studied. The degrees of crystallinity, determined by X-ray diffraction, revealed the preponderant amorphous character of these mixtures. By small a ngle scattering of synchrotron radiation, imposing the miscibility conditio n for Flory-Huggins interaction energy parameter, the "miscibility window" for all mixtures were determined.