Abstract: The biocompatible and biodegradable poly(β-hydroxybutyrate) can be used as medical material，wrapper and optics datum to partly replace current plastics. However，the high crystallization and inferior process restrict the application of poly(β-hydroxybutyrate). The advances on modification of poly(β-hydroxybutyrate)(PHB) is reviewed. The modification methods and performance of PHB copolymer are summarized. Reactive polymer blending is a useful method to improve the miscibility of PHB blends，and the modification based on PHB macromer reaction，reactive polymer blending and interpenetrating network technology represents the new trends of PHB modification.
chemical modification

摘要： 综述了聚羟基丁酸酯的物理和化学改性的研究进展。评述了改性方法和产物的性能，认为反应性共混是改善非相容PHB共混体系相容性的较好方法；大单体反应改性、反应性共混、互穿网络等领域的研究代表了PHB改性工作新的发展方向。