School of Chemistry, Chemical Engineering and Life Sciences, Wuhan University of Technology, Wuhan, 430070, P. R. China.
Macromol Rapid Commun. 2024 Oct;45(20):e2400380. doi: 10.1002/marc.202400380. Epub 2024 Jul 16.
Polylactic acid (PLA), derived from renewable resources, has the advantages of rigidity, thermoplasticity, biocompatibility, and biodegradability, and is widely used in many fields such as packaging, agriculture, and biomedicine. The excellent processability properties allow for melt processing treatments such as extrusion, injection molding, blow molding, and thermoforming in the preparation of PLA-based materials. However, the low toughness and poor thermal stability of PLA limit its practical applications. Compared with pure PLA, conditions such as processing technology, filler, and crystallinity affect the mechanical properties of PLA-based materials, including tensile strength, Young's modulus, and elongation at break. This review systematically summarizes various technical parameters for melt processing of PLA-based materials and further discusses the mechanical properties of PLA homopolymers, filler-reinforced PLA-based composites, PLA-based multiphase composites, and reactive composite strategies for PLA-based composites.
聚乳酸（PLA）来源于可再生资源，具有刚性、热塑性、生物相容性和可生物降解性等优点，广泛应用于包装、农业和生物医学等多个领域。其优异的加工性能使其能够通过挤出、注塑、吹塑和热成型等熔融加工处理方法制备 PLA 基材料。然而，PLA 的韧性低和热稳定性差限制了其实际应用。与纯 PLA 相比，加工技术、填充剂和结晶度等条件会影响 PLA 基材料的力学性能，包括拉伸强度、杨氏模量和断裂伸长率。本综述系统地总结了 PLA 基材料的熔融加工的各种技术参数，并进一步讨论了 PLA 均聚物、填充剂增强型 PLA 基复合材料、PLA 基多相复合材料和 PLA 基复合材料的反应性复合策略的力学性能。
