Textile Engineering, Chemistry and Science Department, North Carolina State University, Raleigh, NC 27695, United States.
Carbohydr Polym. 2013 Jan 30;92(1):885-93. doi: 10.1016/j.carbpol.2012.09.081. Epub 2012 Oct 8.
Two novel halogen-free phosphorous-nitrogen flame retardant bifunctional monomers were synthesized and characterized using attenuated total reflectance/Fourier transform-infrared (ATR/FT-IR) and electrospray ionization mass spectrometry ((+)ESI-MS). The monomers were applied separately and graft polymerized on cotton in the presence of the thermal initiator K(2)S(2)O(8). The performance of each monomer was evaluated using thermal gravimetric analysis (TGA), grafting efficiency, and vertical flame test. It was shown that the performance of N,N-dimethyl di(acryloyloxyethyl)phosphoramide (DMDAEP) (monomer 2) as flame retardant outperformed that of ethyl di(acryloyloxyethyl)phosphorodiamidate (EDAEP) (monomer 1). The superior performance of DMDAEP was attributed to the presence of more nitrogen atoms compared to EDAEP. The increased nitrogen content in DMDAEP increased the synergistic effect of the P-N system. Cotton treated using padding methods showed more promising results than cotton treated by exhaust methods.
合成并采用衰减全反射傅里叶变换红外光谱（ATR/FT-IR）和电喷雾电离质谱（ESI-MS）对两种新型无卤磷氮阻燃双功能单体进行了表征。分别在热引发剂 K2S2O8 的存在下，将单体应用于棉纤维上进行接枝聚合。采用热重分析（TGA）、接枝效率和垂直燃烧试验对每个单体的性能进行了评估。结果表明，N,N-二甲基二（丙烯酰氧乙基）磷酰胺（DMDAEP）（单体 2）作为阻燃剂的性能优于乙基二（丙烯酰氧乙基）磷酰胺（EDAEP）（单体 1）。DMDAEP 的优异性能归因于与 EDAEP 相比，其具有更多的氮原子。DMDAEP 中增加的氮含量增加了 P-N 体系的协同效应。与浸染法处理的棉纤维相比，轧制法处理的棉纤维显示出更有前景的结果。
