Facile Strategy to Design a Cellulose Nanocrystal-Based Nanocomposite Fire Retardant with Strong Smoke Suppression Efficiency
writer：Yunyun Zhang, Hou-Yong Yu, Yanjuan Dong, Xiaohua Wang, Xuefei Chen, Xue Ma, Peng-Cheng Qian
keywords：cellulose nanocrystals,charcoal residue,thermal stability,expansion properties,smoke suppression
source：期刊
specific source：DOI: 10.1021/acssuschemeng.3c02458
Issue time：2023年
Fire accidents can trigger severe personal injury and large-scale property damage. Therefore, the use of flame retardant is essential. A novel green ternary nanocomposite intumescent flame retardant (IFR) (CNC@MEL-PA) was fabricated by successively modifying the gas source melamine (MEL) and acid source phytic acid (PA) on the carbon source cellulose nanocrystals (CNCs). CNC@MEL-PA exhibited better thermal stability,carbon layer formation ability, and smoke suppression efficiency due to its characteristic two-dimensional (2D) petal structure and intumescent carbon layer. Notably, compared to CNCs, the expanded carbon layer volume of CNC@MEL-PA was enhanced from about 62.2 to 169.6 mm3. Therefore, this study provides a facile synthetic route of high-performance CNC@MEL-PA with good smoke suppression efficiency for agreen flame-retardant material for construction and transportation products.