Preparation and Properties of Poly(lactic Acid) Fiber Reinforced PHBV Composite

Abstract:

Purposes: This study is to improve the mechanical properties and machinability performance of PHBV. Procedures: PLA/PHBV composites were prepared by dry blend in the melt mixing. The contents of PLA fiber in PHBV matrix are 0, 1, 3, 5, 8 and 10 wt. %. Methods: PLA/PHBV composites were subjected to mechanical property, thermal and morphology evaluation. Results: The results showed the immiscibility of PLA fiber and PHBV matrix. The excellent mechanical properties of the composite (the content of PLA fiber is 8 wt. %) were higher than those of neat PHBV. The micrograph of the fracture surfaces showed that the addition of PLA fiber evidently improved the toughness of PLA/PHBV blends and showed a broad spectrum of PLA fiber diameter (about 200 nm). Conclusions: The improvements were due to the efficient of the PLA fiber as the reinforcement. And the blends showed a significant ductile plastic deformation. The PLA/PHBV blends can be used for a wide range of multifunctional biomedical materials such as the internal fixation of fracture.

• Periodical: Applied Mechanics and Materials (Volume 420)
• Pages: 107-113
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.420.107
• Online since: September 2013
• Authors: Guo Lei Liang, Zhi Hong Li, Ji Min Wu, Xiang Zhao, Wei Juan Jiang, Zi Hao Chen, Jing Guan, Shu Jie Huang, Xi Zheng Zhang
• Keywords: Mechanical Property, Poly(hydroxyl Butyrate-co-Hydroxyvalerate) (PHBV), Poly(lactic Acid) (PLA) Fiber, Polymer Composite, Reinforcement

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