Structure and properties of the system: poly(2,6-dimethyl-phenylene oxide) isotactic polystyrene. Wide-angle x-ray studies

Abstract
PPO/iPS blends of various compositions have been crystallized isothermally and by solvent-induced treatment from the glassy state. The crystallinity as a function of composition has been determined from the integral scattering of the crystalline and amorphous regions. Applying Hosemann’s concept of the paracrystal, crystallite size and strain parameters have been calculated from peak broadening analysis. The results are compared to those obtained from DSC and small-angle x-ray measurements on the same samples.