Phosphorylation of lignin to flame retard acrylonitrile butadiene styrene (ABS)
Phosphorylation of lignin to flame retard acrylonitrile butadiene styrene (ABS)
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DOI：
10.1016/j.polymdegradstab.2016.01.015
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发表时间：
2016-05-01
影响因子：
5.9
通讯作者：
Bourbigot, S.
中科院分区：
文献类型：
--
作者：
Prieur, B.;Meub, M.;Bourbigot, S.
木质素是一种丰富的多酚类生物高分子材料。由于它的芳香结构，它在火的条件下形成焦炭。用木质素作为阻燃剂制备丙烯腈-丁二烯-苯乙烯（ABS）。观察到阻燃性增强，然后木质素被磷酸化以达到最高性能。首次对FR磷酸化木质素（P-LIG）进行了详细的表征。在木质素上接枝磷可显著增加高温下聚合物共混物的残留量。当质量分数为30 wt.%时，P-LIG在ABS中分散良好，放热速率峰值显著降低。结果表明，P-LIG在热分解过程中与ABS反应，促进了炭的形成。因此，炭具有更强的凝聚力，并起到保护层的作用，从而减少ABS降解释放到火焰中的燃料。因此，磷酸化木质素是一种很有前途的ABS生物基阻燃剂。版权所有。
Lignin is an abundant polyphenol biopolymeric material. Due to its aromatic structure it develops a char under fire conditions. Lignin was used as flame retardant in acrylonitrile-butadiene-styrene (ABS). Enhancement of flame retardancy was observed, and the lignin was then phosphorylated to achieve highest performance. For the first time, characterization of FR phosphorylated lignin (P-LIG) was undertaken in detail. Grafting phosphorus onto lignin significantly increases the amount of residue from the polymer blend at high temperature. At 30 wt.%, P-LIG is well dispersed in ABS and leads to a significant reduction of the peak of heat release rate. It is shown that P-LIG promotes char formation by reacting with ABS during thermal decomposition. The char is therefore more cohesive and acts as a protective layer, such that less fuel from ABS degradation is released to the flame. Thus phosphorylated lignin is as a promising bio-based flame retardant for ABS. (C) 2016 Elsevier Ltd. All rights reserved.