Wang Yadong, Gao Jingjing, Zhu Guoping, Rao Wenhui, Lin Xuebao, Zhu Zongmin
College of Materials Science and Engineering, Hubei Key Laboratory for New Textile Materials and Applications, Wuhan Textile University, Wuhan 430200, China; State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University, Chengdu 610064, China.
College of Materials Science and Engineering, Hubei Key Laboratory for New Textile Materials and Applications, Wuhan Textile University, Wuhan 430200, China.
Int J Biol Macromol. 2025 Jan;286:138560. doi: 10.1016/j.ijbiomac.2024.138560. Epub 2024 Dec 8.
The fire safety of polymer plastics has become a global consensus, and creating a more efficient flame-retardant network is in line with the trend. Here, a direct strategy for low usage of flame retardants and fire-resistant PLA plastics was proposed. The bio-based flame-retardant PDT, which was formed by ionic bonding of phytic acid and organic amine molecules, had high flame-retardant efficiency for PLA. PLA/PDT composite demonstrated excellent flame-retardant performance during service, achieving UL-94 V-0 grade with only 2 wt% of addition and a LOI of 29.3 %, significantly better than previous work. In cone calorimeter test, heat release, CO production, and av-EHC were inhibited. And the flame-retardant mechanism was analyzed in detail through SEM, XPS, Raman, and TG-IR. Besides, the thermal stability and crystallinity of PLA composites were enhanced. It was expected that this work will provide a new approach for the development of sustainable flame-retardant PLA plastics.
