聚乳酸是一种常用的可生物降解的医用材料,但单纯聚乳酸并不能满足临床需要.对聚乳酸的改性工作一直都备受关注.综述了近几年聚乳酸生物降解材料的化学改性研究进展,重点论述了共聚、接枝、星型、表面改性4个方面.经改性后聚乳酸的力学性能、降解性能和亲水性能可以得到某些改善,从而更好地满足了生物医用需要.并展望了未来聚乳酸的发展.
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