高固体含量的乙二醛化聚丙烯酰胺的合成  

Synthesis of high solids glyoxalated polyacrylamide

作　　者：缪飞[1] 栾安博[1] 杨伟和[1] 李少清[1] 

机构地区：[1]广东省石油化工研究院广东省化学工业公共实验室,广东广州510665

出　　处：《应用化工》2014年第2期254-257,260,共5页Applied Chemical Industry

基　　金：广东省科技型中小企业技术创新基金项目(2012CY181)

摘　　要：以丙烯酰胺(AM)与二甲基二烯丙基氯化铵(DADMAC)为原料,甲酸钠作链转移剂,过硫酸铵(APS)作引发剂,合成阳离子型聚丙烯酰胺(PDA),再与乙二醛作用,得到固体含量为11%的乙二醛化聚丙烯酰胺(G-PDA)。考察了影响PDA相对分子量和G-PDA粘度的因素。在DADMAC用量为40%(占单体质量分数),单体浓度为30%,APS用量为0.6%(占单体质量分数)的条件下,PDA的相对分子量为7 218。当乙二醛用量为30%(相对于PDA质量),G-PDA的粘度为25 mPa·s,在30℃下贮存时间约为37 d。Cationic polyacrylamide （PDA） was synthesized by reacting with acrylamide （AM） and dial- lyldimethylammonium chloride（DADMAC） as the raw material,and sodium formate as chain transfer a- gent, and ammonium persulfate as initiator. The glyoxalated polyacrylamide （G-PDA） was obtained by reacting PDA and glyoxal,and the solid content was 11%o by weight. The effect of various factors on the molecular weight of PDA and the viscosity of G-PDA were studied. The molecular weight of PDA was 7 218 when the amount of DADMAC was 40% ,amount of APS was 0.6% , and the monomer concentration was 30% by weight. The viscosity of G-PDA was 25 mPa . s when the dosage of glyoxal was 30%. The G-PDA can be stably stored, for about 37 d when stored at 30 ℃.

关 键 词：乙二醛 阳离子聚丙烯酰胺 自由基聚合 高固体含量 

分 类 号：TQ314.253[化学工程—高聚物工业]