An insightful understanding of the isothermal cold crystallization, melting behavior, and kinetics of the novel PHB-rubber copolymer (PHB-di-rub)-reinforced polylactide (PLA) were determined. Incorporating 10 wt% PHB-di-rub significantly reduces the crystallization half-times (t_1/2) by 32-fold, lowers the kinetic parameter (K_g) and folding surface energy (σ_e), which show the rapid polymer chains folding and the super-nucleating capability due to simultaneous instigated nucleation and plasticization. Concurrently, the shear-thinning behavior verified the plasticization effect and the convergence of diffraction peak show development of primary α′-crystalline form that contributes to the PLAs' ultra-extensibility. This evocative finding could comprehend a valuable framework for the future development of high-performance PLA/PHB-based copolymer biocomposites with total green physiognomies.

确定了对新型 PHB-橡胶共聚物 ( PHB-di-rub ) -增强聚乳酸 (PLA)的等温冷结晶、熔融行为和动力学的深刻理解。加入 10 wt% PHB-di-rub 可显着减少结晶半衰期 ( t _1/2 ) 32 倍，降低动力学参数 ( K _g ) 和折叠表面能 (σ _e)，这显示了由于同时引发的成核和塑化，聚合物链的快速折叠和超成核能力。同时，剪切稀化行为证实了塑化效应，衍射峰的收敛显示了初级 α'-结晶形式的发展，这有助于 PLA 的超延展性。这一令人回味的发现可以为未来开发具有整体绿色面貌的高性能 PLA/PHB 共聚物生物复合材料提供一个有价值的框架。