Abstract
AbstractCrystallization kinetics were characterized by using isothermal differential scanning calorimetry (DSC) analysis on neat semicrystalline syndiotactic polystyrene (s‐PS) and its miscible blends with atactic (amorphous) polystyrene (a‐PS) or with poly (1,4‐dimethyl‐p‐phenylene oxide) (PPO). The crystallization behavior of neat s‐PS polymer was compared to its miscible blends. The results suggest that the crystal growth in melt‐crystallized s‐PS is nearly of homogeneous nucleation and that the growth pattern of the spherulites is 3‐D spherical. The s‐PS component in its miscible blends was found to crystallize with similar behavior to that of neat s‐PS, but with lower Avrami exponents, suggesting that the nucleation mechanism is likely more heterogeneous with blending.
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