Unexpected Reorganization Effects of Cold-Crystallized Polylactide Stereocomplex

摘要

Cold crystallization of poly (l-lactide)/poly (d-lactide) blends at low temperatures results in the formation of a stereocomplex with loose intermolecular packing. Upon heating, it undergoes significant reorganization into a compact one with an extremely high melting point via a solid-solid transition. In contrast, the stereocomplex crystallized at high temperatures exhibits little reorganization and thus a relatively low melting point.