聚乳酸(PLA)是由乳酸直接缩聚或丙交酯开环聚合制得的脂肪族聚酯,具有生物相容性、生物降解性和良好的力学性能.但是,由于纯PLA树脂的结晶速率慢、制品收缩率大、本身质脆等缺点,需要各种无机或有机材料对其进行共混改性.制备可完全生物降解的PLA共混复合材料,成为目前研究热点.文中全面介绍了近年来可以完全生物降解的PLA共混复合体系,综述了其最新研究进展.
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