Abstract
Spherulitic growth and morphology of PES/PEO blend with non-isothermal crystallization were investigated by means of differential scanning calorimetry and polarizing optical microscope. Depending on the crystallization conditions and compositions, PES and PEO can crystallize either simultaneously at the same temperature or separately at different temperatures, i.e., step-crystallization. An opposed-interpenetrated growth was found in the simultaneous crystallization process of PES and PEO. PES and PEO spherulite nucleated with the same nucleus and the growth faces of PES and PEO lamellae grow simultaneously with different growth rate in the same spherulite. The PES lamellae radically developed along the preexisting PEO lamellae, resulting in the change of spherulitic morphology. The change of spherulitic morphology for the step-crystallization process of PES and PEO was also discussed.
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He, S., Liu, J. Crystallization and Morphology Development of Binary Crystalline Poly(ethylene succinate)/Poly(ethylene oxide) (PES/PEO) Blend with Non-Isothermal Crystallization. Polym J 39, 537–542 (2007). https://doi.org/10.1295/polymj.PJ2006139
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DOI: https://doi.org/10.1295/polymj.PJ2006139