一磷酸腺苷的改性及其对棉织物的紫外光接枝阻燃

Modification of nucleotide and flame retardant treatment of cotton fabric via photografting

针对生物阻燃剂存在加工热稳定性差和阻燃耐久性差的问题,本实验提出紫外光接枝的解决方法。因其可室温操作,并使纺织品共价键合生物阻燃剂。在5′-腺嘌呤核糖核苷酸二钠盐(AMP-Na_(2))上引入不饱和双键制备AMP-Na_(2)阻燃单体,利用紫外光接枝法将AMP-Na_(2)阻燃单体接枝到棉织物上。采用傅里叶红外变换光谱仪(FT-IR)、核磁共振氢谱(^(1)H-NMR)、质谱仪对AMP-Na_(2)阻燃单体的化学结构进行表征。FT-IR和1H-NMR结果表明,丙烯酰氯与AMP-Na_(2)发生酯化反应制备出阻燃单体。质谱结果表明进行了二羟基改性。通过扫描电镜对接枝后棉织物及其碳化残渣进行表征,发现接枝后棉织物表面变得粗糙且纤维间出现部分粘连,其燃烧后碳化残渣保持良好的织物形态。

To solve the problems of poor processing thermal stability and flame retardant durability of biological flame retardants,a solution of UV grafting was proposed.It can operate at room temperature and make textiles covalently bonded with biological flame retardants.The unsaturated double bond was introduced into 5′-adenine ribonucleotide disodium salt(AMP-Na_(2))to prepare flame retardant monomer AMP-Na_(2).The flame retardant monomer AMP-Na_(2)was photografted onto cotton fabric,of which chemical structure was characterized by FT-IR,^(1)H-NMR and MS.The results showed that the flame retardant monomer was prepared by esterification of acryloyl chloride with AMP-NA2.The results of mass spectrometry showed that dihydroxy group was modified.The grafted cotton fabric and its carbonization residue were characterized by scanning electron microscope(SEM).It was found that the surface of grafted cotton fabric became rough and some fibers adhered.The carbonization residue remained good fabric morphology after combustion.