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利用原子转移自由基聚合法合成甲基纤维素接枝共聚苯乙烯和甲基纤维素接枝共聚丙烯酰胺获得纳米甲基纤维素。系统讨论溶剂、温度、时间对甲基纤维素接枝共聚物产率的影响。结果表明,甲基纤维素接枝共聚在溶剂二甲基亚砜105℃里反应8h,甲基纤维素接枝聚苯乙烯产率达到35.1%,甲基纤维素接枝聚丙烯酰胺达到10.7%。在均相溶剂二甲基甲酰胺105℃里反应10h,获得10.8%的纳米甲基纤维素接枝共聚苯乙烯,得到甲基纤维素接枝聚苯乙烯直径为200nm棒状纳米结构。利用傅里叶红外光谱(FT-IR)和核磁共振(1 H NMR)、扫描电子显微镜(SEM)、场发射透射电子显微镜(TEM)对甲基纤维素接枝共聚物结构进行表征。
The synthesis of methylcellulose graft copolymerization of styrene and methyl cellulose graft copolymer acrylamide by atom transfer radical polymerization to obtain nano-methyl cellulose. The effects of solvent, temperature and time on the yield of methylcellulose graft copolymer are systematically discussed. The results showed that methyl cellulose graft copolymerization in the solvent dimethyl sulfoxide at 105 ℃ for 8h, the yield of methyl cellulose grafted polystyrene reached 35.1%, methyl cellulose grafted polyacrylamide reached 10.7% . The homogeneous solvent dimethylformamide was reacted at 105 ℃ for 10h to obtain 10.8% of nano-methyl cellulose graft copolymerization styrene, to obtain methyl cellulose-grafted polystyrene with a diameter of 200nm rod-like nano-structure. The structure of methylcellulose graft copolymer was characterized by Fourier transform infrared spectroscopy (FT-IR) and nuclear magnetic resonance (1H NMR), scanning electron microscopy (SEM) and field emission transmission electron microscopy (TEM).