Preparation of Polylactic Acid and Research Progress of Mechanical Properties and Crystallinity Modification of its Composite Materials

ZHANG Alibumi, LÜ Xuyan, LU Xuecheng

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Plastics Science and Technology ›› 2025, Vol. 53 ›› Issue (02) : 187-192. DOI: 10.15925/j.cnki.issn1005-3360.2025.02.034
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Preparation of Polylactic Acid and Research Progress of Mechanical Properties and Crystallinity Modification of its Composite Materials

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Abstract

Polylactic acid (PLA), as a polymer with good biodegradability and biocompatibility, has shown extensive application potential in many fields such as aerospace, biomedical, food packaging, and so on. However, PLA also has some application limitations, such as high brittleness, low strength, and slow degradation rate. In order to overcome these limitations and further improve the performance of PLA, researchers have proposed various modification strategies, including adding nanomaterials for modification, adding biodegradable materials for modification, adding fiber materials for modification, crystallinity modification, compatibilization modification, functionalization modification, and copolymer grafting modification. The article briefly introduces the structure and two synthesis principles of polylactic acid (PLA) composite materials, and systematically reviews the principles of these modification methods and the effects of modified composite materials on mechanical properties and crystallinity. Finally, the future research directions of PLA composite material modification technology are prospected.

Key words

Polylactic acid / Modification / Biodegradation / Crystallinity / Composites

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ZHANG Alibumi , LÜ Xuyan , LU Xuecheng. Preparation of Polylactic Acid and Research Progress of Mechanical Properties and Crystallinity Modification of its Composite Materials. Plastics Science and Technology. 2025, 53(02): 187-192 https://doi.org/10.15925/j.cnki.issn1005-3360.2025.02.034

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