聚羟基脂肪酸酯(PHA)是一种天然的可降解高分子生物材料,可应用于生物医用和生物可降解包装材料方面。目前,生物合成PHA的研究进展和产业化趋势集中在两个方面:一是进一步降低生产成本,实现生物可降解塑料的大规模生产;另一个就是改善生物可降解塑料的性质,提高生物可降解塑料的应用范围。本文主要针对性质改造方面的研究进展和趋势进行讨论。 Polyhydroxyalkanoate (PHA) is a natural, biodegradable polymer biomaterial that can be applied to biomedical and biodegradable packaging materials. At present, the biosynthetic PHA research and industrialization trends focus on two aspects: First, to further reduce production costs, to achieve large-scale production of biodegradable plastics; the other is to improve the properties of biodegradable plastics to improve biodegradable Plastic applications. This article mainly discusses the research progress and trend of the nature transformation.