阻燃剂
可燃性
极限氧指数
极限抗拉强度
透明度(行为)
材料科学
韧性
高分子科学
复合材料
燃烧
化学
有机化学
烧焦
政治学
法学
作者
Jiabing Feng,Zhewen Ma,Zhiguang Xu,Hongyan Xie,Yixia Lu,Cristián Maluk,Pingan Song,Serge Bourbigot,Hao Wang
标识
DOI:10.1016/j.cej.2021.134259
摘要
Renewable polylactide (PLA) features good biodegradability, high optical transparency and mechanical strength. However, inherent flammability severely restricts its practical applications in packaging, fabric and electronics. Polyphosphoramides have recently demonstrated high fire-retardant effectiveness in PLA, but their synthesis usually involves the use of a large volume of toxic organic solvents, in addition to their negative impacts on the transparency of PLA. Herein, we report a one-pot green solvent-free approach for massively synthesizing a silicon (Si)-containing polyphosphoramide (DM-Si). The results show that with only 1.0 wt% of DM-Si, the resultant PLA material exhibits desirable fire retardancy, e.g., a UL-94 V-0 rating and a limiting oxygen index of 27.9%, and a 68% increase in toughness relative to virgin PLA. Moreover, both the tensile strength and transparency of PLA are well-preserved. This work provides an eco-benign yet facile strategy for the synthesis of efficient flame retardants for bioplastics with balanced mechanical strength and transparency, which hold great promise as sustainable materials for many industrial applications.
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