聚乙二醇-聚丙烯酸钠共聚物制备及协同破乳脱水作用研究  

Study on demulsification and dewatering actions of poly(ethylene)co-poly(acrylic acid sodium) in treatment of waste oil

作　　者：吴云[1,2] 张贤明[1] 

机构地区：[1]重庆工商大学废油资源化技术与装备教育部工程研究中心,重庆400067 [2]解放军后勤工程学院应用化学系化学工程与技术博士后流动站,重庆401311

出　　处：《应用化工》2012年第12期2095-2098,2102,共5页Applied Chemical Industry

基　　金：重庆市教委科学技术研究项目(KJ110717);重庆工商大学博士科研启动基金项目资助(CTBU20105618)

摘　　要：在N,N’-亚甲基双丙烯酰胺为交联剂、偶氮二异丁腈为引发剂条件下,以丙烯酸钠单体与苯乙烯单封端聚乙二醇(St-PEG)大分子单体进行自由基分散共聚,制备交联共聚树脂。性能测试结果表明,共聚物具有协同破乳脱水性能,50℃条件下,废油破乳脱水率可达78%以上。作用分析结果表明,共聚物对废油中存在的沥青质、胶质等天然乳化成膜物质具有较强的吸附能力,是聚丙烯酸钠脱水树脂的3～5倍,且聚合物处理后,模拟乳状液中的界面物质含量减少了56%,其油水界面剪切粘度和界面弹性均明显下降,这说明聚合物的吸附作用是导致破乳过程发生的重要原因。Crosslinked poly （ ethylene glycol） -co-poly （ acrylic acid sodium） copolymer were prepared by dispersion copolymerization of St-PEG macromonomer with acrylic acid sodium in the present of N, N＇- methylenebisacrylamide （Bis） as crosslinker and 2, 2＇ -azobis （isobutyronitrile） （AIBN） as initiator. The results showed that the copolymer had the capability of dewatering cooperated with demulsification, dewa- tering rate of emulsified oil was higher than 78% at 50 ℃ condition. The experimental results of action a- nalysis showed that copolymer had strong adsorption capability on asphaltine and colloid in waste oil was 3 ~ 5 times of the PAAS, interracial active matter decreased by 56% ,interracial shear viscosity and inter- facial elasticity of emulsion oil decreased obviously after eopolymer treatment. It could illustrate adsorption behavior of copolymer was important factor that lead to the occurrence of demulsification.

关 键 词：聚乙二醇 聚丙烯酸钠 共聚物 破乳 脱水 

分 类 号：TQ319[化学工程—高聚物工业] TQ317.4