Zhu Junjie, Sun Hui, Yang Biao, Weng Yunxuan
College of Light Industry Science and Engineering, Beijing Technology and Business University, Beijing 100048, China.
Beijing Key Laboratory of Quality Evaluation Technology for Hygiene and Safety of Plastics, Beijing Technology and Business University, Beijing 100048, China.
Materials (Basel). 2024 Jan 9;17(2):336. doi: 10.3390/ma17020336.
Polylactic acid (PLA), as a renewable and biodegradable green polymer material, is hailed as one of the most promising biopolymers capable of replacing petroleum-derived polymers for industrial applications. Nevertheless, its limited toughness, thermal stability, and barrier properties have restricted its extensive application. To address these drawbacks in PLA, research efforts have primarily focused on enhancing its properties through copolymerization, blending, and plasticization. Notably, the blending of modified biomass with PLA is expected not only to effectively improve its deficiencies but also to maintain its biodegradability, creating a fully green composite with substantial developmental prospects. This review provides a comprehensive overview of modified biomass-reinforced PLA, with an emphasis on the improvements in PLA's mechanical properties, thermal stability, and barrier properties achieved through modified cellulose, lignin, and starch. At the end of the article, a brief exploration of plasma modification of biomass is presented and provides a promising outlook for the application of reinforced PLA composite materials in the future. This review provides valuable insights regarding the path towards enhancing PLA.
聚乳酸（PLA）作为一种可再生且可生物降解的绿色聚合物材料，被誉为最有前途的生物聚合物之一，能够替代石油衍生聚合物用于工业应用。然而，其有限的韧性、热稳定性和阻隔性能限制了其广泛应用。为了解决PLA中的这些缺点，研究工作主要集中在通过共聚、共混和增塑来提高其性能。值得注意的是，将改性生物质与PLA共混不仅有望有效改善其不足之处，还能保持其生物降解性，从而创造出具有巨大发展前景的全绿色复合材料。本文综述了改性生物质增强PLA的研究进展，重点介绍了通过改性纤维素、木质素和淀粉实现的PLA机械性能、热稳定性和阻隔性能的改善。文章结尾对生物质的等离子体改性进行了简要探讨，并为增强PLA复合材料的未来应用提供了有前景的展望。本综述为增强PLA的途径提供了有价值的见解。
