Improving the flame retardancy and accelerating the degradation of poly (lactic acid) in soil by introducing fully bio-based additives
作者：Shuang Qiu，Yuchun Li，Peng Qi，Dan Meng，Jun Sun，Hongfei Li，Zheng Cui，Xiaoyu Gu，Sheng Zhang
關鍵字：引入全生物基添加劑提高聚乳酸阻燃性并加速土壤中降解
論文來源：期刊
具體來源：International Journal of Biological Macromolecules
發表時間：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，通過植酸 (PA) 和 L-瓜氨酸 (LC) 之間的曼尼希反應制備了一種新型生物基阻燃劑 LC-PA。LC-PA 與單寧酸 (TA) 結合并引入 PLA 以提高防火性能并加速生物降解。與對照 PLA 相比，含有 10% LC-PA/TA 的 PLA 復合材料將 LOI 值提高到 26.9%，達到了V在 UL-94 測試中為 -0 等級，并將峰值放熱率和總放熱率分別降低 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，這對生物降解材料具有重要意義。LC-PA/TA的加入可以吸水并為微生物增殖提供合適的能源，加速PLA的水解和微生物降解。這項工作為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種實用的方法。
https://doi.org/10.1016/j.ijbiomac.2021.10.119