膨胀的
阻燃剂
材料科学
碳化
烧焦
纤维素
化学工程
热稳定性
聚合物
环境友好型
烟雾
复合材料
热解
有机化学
化学
扫描电子显微镜
生态学
工程类
生物
作者
Xuefei Chen,Yunyun Zhang,Hou‐Yong Yu
标识
DOI:10.1016/j.matlet.2023.135335
摘要
Cellulose nanocrystals (CNCs) with flame-retardant property attract considerable attention as multifunctional reinforcing nanofillers for the polymers. Herein, a novel eco-friendly CNC-based (CTP) flame retardancy (FR) had been developed by modifying CNC with tannic acid (TA) and phytic acid (PA). The CTP with spherical morphology displayed good thermal stability, with carbon residual (CR) content up to 59.3 % at 600 °C. Notably, the CTP can be carbonized rapidly to form the dense and continuous intumescent char layer, which height increased from 2 mm to 16 mm. The quick dehydration and carbonization of TA under the catalysis of PA contributed to the high expansibility and carbonization efficiency of CTP. The formation of intumescent char layer acted as a strong barrier, significantly improving the flame retardancy and inhibiting the dense smoke release. This eco-friendly and high flame-retardant CNC-based FRs can be widely used for developing multifunctional polymers.
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