两种低阳离子度高相对分子质量PDA的制备  

Preparation of PDA with Low Cationicity and High Molecular Weight

作　　者：毕可臻[1] 张跃军[1] 

机构地区：[1]南京理工大学化工学院,江苏南京210094

出　　处：《南京理工大学学报》2011年第5期702-708,共7页Journal of Nanjing University of Science and Technology

基　　金：'十五'国家科技攻关项目(2003BA327C)

摘　　要：以二甲基二烯丙基氯化铵(DMDAAC)和丙烯酰胺(AM)为原料,过硫酸铵和亚硫酸氢钠复合物为引发体系,通过水溶液聚合法合成了10%和20%阳离子度DMDAAC和AM的共聚物(PDA)胶体产物。研究了单体质量、引发剂用量、聚合反应温度和Na4EDTA用量对产物特征黏度的影响。研究结果表明,在单体质量百分数为20%和37.5%,引发剂质量分数为3.0×10-4和5.1×10-5,聚合反应温度为45℃,Na4EDTA质量分数为2.0×10-4的最佳工艺条件下,10%和20%阳离子度PDA的特征黏度分别为17.1 dL/g和12.2 dL/g。2种反应单体的不同竞聚率导致其PDA产物最佳工艺参数的不同。Taking dimethyldiallylammonium chloride（DMDAAC） and acrylamide（AM） as raw materials,and ammonium persulfate-sodium bisulfate redox complex as the initiator,the copolymers of poly DMDAAC and AM（PDA） with 10% and 20% cationicity are prepared.The effects of the monomer mass,initiator dosage,reaction temperature and the Na4EDTA dosage on the intrinsic viscosity of PDA are studied.The results show that,under the optimum technological condition that the monomer mass percentage is 20% and 37.5%,the mass ratio of initiator to monomer is 3.0×10-4 and 5.1×10-5,the reaction temperature is 45℃,and the mass ratio of Na4EDTA to monomer is 2.0×10-4,the intrinsic viscosities of PDA with 10% and 20% cationicity are 17.1 dL/g and 12.2 dL/g respectively.The different optimum parameters are caused by the differences between the reactivity ratios of two monomers.

关 键 词：二甲基二烯丙基氯化铵 丙烯酰胺 共聚合 合成 阳离子度 特征黏度 竞聚率 

分 类 号：TQ316.342[化学工程—高聚物工业]