[Recent advances in nucleating agents used for poly (lactic acid)].

Poly (lactic acid) (PLA) is a polymer synthesized from lactic acid with good biocompatibility and biodegradability. At present, PLA manufactured on industrial scale is mainly synthesized from L-lactic acid. The obtained products have good transparency but poor heat resistance. Adding nucleating agents could increase the crystallinity of PLA, to improve heat resistance. We reviewed the progress of research on organic and inorganic nucleating agents that can be used for PLA synthesis.聚乳酸是以乳酸为原料而合成得到的一种高分子材料，具有良好生物相容性、可生物降解性。目前工业规模化生产的聚乳酸主要是以左旋乳酸合成得到的聚乳酸，制得的制品透明性好，但缺点是不能耐热。添加成核剂可以提高聚乳酸的结晶度，从而提高它的耐热性能。本文综述了有机成核剂和无机成核剂的研究进展。.