writer：Shuang Qiu，Yuchun Li，Peng Qi，Dan Meng，Jun Sun，Hongfei Li，Zheng Cui，Xiaoyu Gu，Sheng Zhang
keywords：引入全生物基添加剂提高聚乳酸阻燃性并加速土壤中降解
source：期刊
specific source：International Journal of Biological Macromolecules
Issue time：2021年

In this study, a novel bio-based flame retardant LC-PA is prepared by the Mannich reaction between phytic acid (PA) and L-citrulline (LC). LC-PA is combined with tannic acid (TA) and introduced into PLA to improve fire performance and accelerate biodegradability. Compared with control PLA, the PLA composite containing 10% LC-PA/TA increases the LOI value to 26.9%, reaches a V-0 rating in the UL-94 test, and reduces the peak heat release rate and total heat release by 24.5% and 21.1%, respectively. More importantly, the introduction of LC-PA/TA accelerates the degradation rate of PLA in soil, which is of significance for biodegradable materials. The addition of LC-PA/TA can attract water and provide a suitable energy source for microbial proliferation, accelerating the hydrolysis and microbial degradation of PLA. This work provides a practical approach for high flame retardancy and rapid biodegradability in the soil to the bio-based polymer.

在本研究中，通过植酸 (PA) 和 L-瓜氨酸 (LC) 之间的曼尼希反应制备了一种新型生物基阻燃剂 LC-PA。LC-PA 与单宁酸 (TA) 结合并引入 PLA 以提高防火性能并加速生物降解。与对照 PLA 相比，含有 10% LC-PA/TA 的 PLA 复合材料将 LOI 值提高到 26.9%，达到了V在 UL-94 测试中为 -0 等级，并将峰值放热率和总放热率分别降低 24.5% 和 21.1%。更重要的是，LC-PA/TA的引入加速了PLA在土壤中的降解速度，这对生物降解材料具有重要意义。LC-PA/TA的加入可以吸水并为微生物增殖提供合适的能源，加速PLA的水解和微生物降解。这项工作为土壤中的高阻燃性和生物基聚合物的快速生物降解性提供了一种实用的方法。

https://doi.org/10.1016/j.ijbiomac.2021.10.119