聚丙烯酰胺淀粉接枝共聚物的制备及其性能分析

The preparation of polyacrylamide-starch graft copolymer and its property analysis

在硝酸铈铵引发下,通过游离基共聚反应将聚丙烯酰胺接枝到淀粉分子链上(St-g-AM),合成了具有一定分子质量的接枝共聚物。通过对红外光谱(FT-IR)和差示扫描量热(DSC)的分析,研究了聚合物的结构性质,用粘度计法测定了聚合物的相对分子质量。扫描电镜(SEM)谱图分析表明:该共聚物可明显提高纸张的强度。

The graft copolymer of polyacrylamide onto starch with ceric ammonium nitrate as initiator has been studied. The molecular weightof graft-copolymer is 1,090,000, which is determined by viscosity method. Based on the analysis of FT-IR and DSC , the structure of copolymeris studied.Pectrum of SEM indicates that the copolymer can improve the paper strength dramatically.