Insights into the nucleation and crystallization analysis of PHB-rubber toughened PLA biocomposites. (October 2021)

• Record Type: Journal Article
• Authors: Yeo, Jayven Chee Chuan; Lin, Ting Ting; Koh, Junqiang Justin; Low, Liang Wei; Tan, Beng Hoon; Li, Zibiao; He, Chaobin
• Is Part Of: Composites communications. Volume 27(2021)
• Publication Date: 2021-10
• Subjects: Polylactic acid -- Polyhydroxybutyrate -- Crystallization kinetics -- Synergetic effect
• DOI: 10.1016/j.coco.2021.100894
• Languages: English
• ISSNs: 2452-2139

Abstract

Abstract: 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 (σe ), 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. Highlights: Insights into the nucleation and crystallization analysis of PHB-Rubber toughened PLA biocomposites are provided. Incorporation of PHB-di-rub significantly reduces the t 1/2, kinetic parameter ( K g ) and folding surface energy (σe ). PHB-Rubber possesses simultaneous super-nucleating capability and plasticization. The development of primary α′-crystalline contributes to the ultra-extensibility of PLA.