壳聚糖/AM/DM接枝共聚物对纸张的增强效果  

Strengthening Performance of Chitosan-AM-DM Graft Copolymer

作　　者：牛恒[1] 张光华[1] 郝皓[1] 张安琪[1] 刘丽娟[1] 王西锋[1] 

机构地区：[1]陕西科技大学教育部轻化助剂化学与技术重点实验室,西安710021

出　　处：《纸和造纸》2011年第8期51-53,共3页Paper and Paper Making

基　　金：陕西省教育厅重点实验室项目--造纸填料表面组装包覆改性及其应用研究;项目编号:08JK231

摘　　要：采用硫酸亚铁(FeSO4)+过氧化氢(H2O2)氧化还原体系引发制备壳聚糖(CS)和丙烯酰胺(AM)及甲基丙烯酸二甲基氨基乙酯(DM)三元接枝共聚物,讨论了反应条件对接枝共聚物在纸张上增强效果的影响。其最佳合成条件为:m(FeSO4)=0.05%,m(FeSO4):m(H2O2)=0.05:1.8,m(CS)=1%,m(AM)=5%,m(DM)=0.3%,反应体系pH值为4～6。当接枝共聚物用量为0.4%时,与同等条件下壳聚糖-AM接枝共聚物相比,可使纸张的抗张强度和耐破度分别提高15%和18.68%。The graft copolymer was synthesized through oxidation-reduction system including ferrous sulfate（FeSO4） and hydrogen dioxide（H2O2）, by using chitosan（CS） as a dispersant, dimethylaminoethyl methacrylate（DM） and acrylamide （AM） as monomers. The effects of reaction factors on strengthening property were studied. The optimum synthesis conditions are as follows： the dosage of FeSO4 being 0.05%, m（FeSO4）：m（H2O2） being 0.05：1.8, CS being 1%, AM being 5%, and DM dosage being 0.3%, pH of system being 4 - 6. When the dosage of graft copolymer being 0.4%, the tensile strength and bursting strength of paper could improve by 15% and 18.68% compared with the same condition as CS graft AM copolymer.

关 键 词：壳聚糖 丙烯酰胺 DM 接枝共聚 纸张增强剂 

分 类 号：TS727[轻工技术与工程—制浆造纸工程]