丙烯酸系四元共聚耐盐性高吸水树脂的合成  

Synthesis of acryli quaternary salt-tolerant superabsorbent resin

作　　者：周爱军[1] 付艳梅[1] 彭旭[1] 万香港[1] 钟毅[1] 江学良[1] 

机构地区：[1]武汉工程大学材料科学与工程学院,湖北武汉430074

出　　处：《武汉工程大学学报》2012年第5期1-4,共4页Journal of Wuhan Institute of Technology

基　　金：国家自然科学基金项目(507737);湖北省科技攻关项目(2002AA07B02)

摘　　要：以丙烯酸(AA)、丙烯酰胺(AM)、2-丙烯酰胺-2-甲基丙磺酸(AMPS)和二甲基-二烯丙基氯化铵(DMDAAC)为单体,采用反向悬浮聚合法,以过硫酸钾(KPS)为引发剂,N,N-亚甲基双丙烯酰胺为交联剂,Span80为分散剂,在环己烷连续相下进行四元共聚,制备出了耐盐性高吸水树脂.研究了丙烯酸和丙烯酰胺不同配比对吸水率的影响,实验结果表明:当AA∶AM=4∶1时,在蒸馏水、0.9%(质量分数)的NaCl溶液、2%(质量分数)的NaCl溶液、5%(质量分数)的NaCl溶液中的最大吸水量分别为500 g/g、200 g/g、150 g/g、60 g/g.通过与传统三元共聚树脂(AA/AMPS/DMDAAC)的红外分析(FT-IR)和热重分析(TG)比较,表明几种单体产生了交联,且有较好的协同作用;并对四元共聚产物进行了粒度测试及扫描电镜分析(SEM),确定了其微观形貌.The AA-AM-AMPS-DMDAAC four component copolymer of salt-tolerant superabsorbent resin with high absorbability in saline and high absorption rate was synthesized by inverse suspension copolymerization,with Cyclohexane as dispersing medium,Span-80 as dispersing agent,K2S2O8 as initator,N,N-Methylenebisacrylamide as cross-linking agent.The effects of different mass ratio between acrylic acid and acrylamide on water absorption were studied,and the results show that when the mass ratio is m（AA）∶ m（AM）=4∶ 1,the salt-resistant superabsorbent resin has the best water absorbing capacity,the swelling capacity of pure water,0.9% NaCI solution,2% NaCI solution and 5% NaCl solution is found to be 500 g.g-1,200 g.g-1,150 g.g-1 and 60 g.g-1,respectively.Compared to traditional multigroup-cooperated superabsorbent resin（AA/AMPS/DMDAAC） by Fourier transform infrared spectroscopy（FT-IR） and Thermogravimetric analysis（TG）,these monomers have linked each other and the function groups have cooperated effectively;microscopic morphology of quaternary product are determined by particle size measurement and scanning electron microscopy（SEM）.

关 键 词：高吸水性树脂的制备 反相悬浮聚合 吸水倍率 

分 类 号：TQ322.4[化学工程—合成树脂塑料工业]