Zhu Guoping, Wang Jie, Gao Jingjing, Lin Xuebao, Zhu Zongmin
College of Materials Science and Engineering, Hubei Key Laboratory for New Textile Materials and Applications, Wuhan Textile University, Wuhan 430200, PR China.
Anhui Provincial Key Laboratory of Advanced Catalysis and Energy Materials, School of Chemistry and Chemical Engineering, Anqing Normal University, Anqing 246133, PR China.
Int J Biol Macromol. 2025 Apr;303:140668. doi: 10.1016/j.ijbiomac.2025.140668. Epub 2025 Feb 3.
Preparing biobased flame retardants in a simple and fast path, while simultaneously imparting exceptional overall properties to PLA, poses a significant challenge. This study successfully synthesized a novel modified chitosan-based flame retardant, CPPA, through a simple one-step method and applied it to PLA. With the addition of just 10 wt% CPPA, the PLA-10%CPPA achieved UL-94 V-0 classification, while the limiting oxygen index (LOI) value increased to 30.3 %. Additionally, the peak heat release rate (pHRR) decreased from 494 kW/m to 407 kW/m. The good compatibility between CPPA and PLA resulted in an 8.9 % improvement in the tensile performance of the PLA-CPPA composite. Furthermore, CPPA also enhanced the crystallization and antibacterial properties of PLA. This work provides a simple new approach for the development of multifunctional polymers.
以简单快速的方式制备生物基阻燃剂，同时赋予聚乳酸（PLA）优异的综合性能，是一项重大挑战。本研究通过简单的一步法成功合成了一种新型改性壳聚糖基阻燃剂CPPA，并将其应用于PLA。仅添加10 wt%的CPPA，PLA-10%CPPA就达到了UL-94 V-0等级，同时极限氧指数（LOI）值提高到30.3%。此外，热释放峰值速率（pHRR）从494 kW/m降至407 kW/m。CPPA与PLA之间良好的相容性使PLA-CPPA复合材料的拉伸性能提高了8.9%。此外，CPPA还增强了PLA的结晶性能和抗菌性能。这项工作为多功能聚合物的开发提供了一种简单的新方法。
