极限氧指数
阻燃剂
阳离子聚合
纤维素
磷酸盐
傅里叶变换红外光谱
X射线光电子能谱
高分子化学
材料科学
铵
核化学
化学
化学工程
有机化学
复合材料
烧焦
热解
工程类
作者
Hao Zhang,Yonghua Lu,Mengxiao Liang,Qing Jin,Yang Yan,Qian Tang,Shuo Diao,Yao Cheng,Kunling Liu,Jinhao Li,Guang‐Xian Zhang
标识
DOI:10.1016/j.ijbiomac.2024.129543
摘要
A cationic, durable flame retardant for cotton fabrics, 6-(2-(dimethoxy phosphoryl)-2-(trimethyl ammonium)) methoxy-2-methoxy-polysaccharide ammonium phosphate (DTPAP), was synthesized. Its structure was verified by NMR and FTIR spectroscopy. According to the FTIR spectra and X-ray photoelectron spectroscopy (XPS), DTPAP formed P(=O)-O-C bonds with cellulose molecules and firmly grafted to cotton fabrics, giving the fabric a high durability. DTPAP-25-treated fabrics passed the vertical flame test (VFT), and the limiting oxygen index (LOI) was 43.9 %. After 50 laundering cycles (LCs), the DTPAP-25-treated fabrics had an LOI of 29.9 %, passed the VFT, and retained their flame retardancy. EDS data showed that, compared with engrafted cationic ammonium phosphate flame retardants, the DTPAP-treated fabrics contained fewer metal ions. Cone calorimetry data showed that DTPAP-25-treated fabrics did not display concentrated heat release. The results suggested that DTPAP exhibited a condensed-phase flame retardant mechanism, and the introduction of cations into the ammonium phosphate flame retardant reduced ion exchange, which improved the durability.
科研通智能强力驱动
Strongly Powered by AbleSci AI