不同结构高吸水树脂的制备与性能研究  

Study on Preparation and Performance of Different Molecular Structure Super Absorbent Resin

作　　者：尤晶[1,2] 朱国鹏[1] 黄帮裕[2] 阚玉景[2] 杜建军[2] 李永胜[2] 

机构地区：[1]海南大学农学院,海口570100 [2]仲恺农业工程学院植物营养与新型肥料研究中心,广州510225

出　　处：《材料导报》2013年第16期82-85,共4页Materials Reports

基　　金：国家自然科学基金(30971867;31172031);广东省自然科学基金(10251022501000000);广东省重大科技专项(2012A020100004);广东省农业科技成果转化资金(2012NL054);广州市科技计划项目(2012J4300114)

摘　　要：采用水溶液聚合法,以丙烯酸、丙烯酰胺和2-丙烯酰胺基-甲基丙磺酸为反应单体,制备了3种高吸水树脂聚丙烯酸-丙烯酰胺(P(AA-AM))、聚丙烯酸-2-丙烯酰胺基-甲基丙磺酸(P(AA-AMPS))和聚丙烯酸-丙烯酰胺-2-丙烯酰胺基-甲基丙磺酸(P(AA-AM-AMPS)),系统考察了反应条件对高吸水树脂吸水和吸盐水性能的影响,并研究了3种高吸水树脂在不同浓度的KCl、CaCl2和FeCl3中的吸水性能。结果表明:反应条件对不同高吸水树脂吸水性能的影响具有相同的趋势,但不同高吸水树脂的最佳反应条件不相同,P(AA-AM)、P(AA-AMPS)和P(AA-AMAMPS)的最佳反应条件分别为:中和度75%、65%和80%;交联剂用量都为单体总质量的0.02%;引发剂用量为单体总质量的0.20%、0.24%和0.20%;不同高吸水树脂受离子溶液的影响程度不同,P(AA-AM)<P(AA-AMAMPS)<P(AA-AMPS);不同溶液对高吸水树脂吸水能力影响也不相同,FeCl3>CaCl2>KCl。Poly（acrylic-co-acrylamide）, poly（acrylic-co-2-acrylamide-2-methylpropanesulfonic acid） and poly（a- crylic-co-aerylamide-co-2-acrylamide-2-methylpropanesulfonic acid） were synthesized using acrylic, acrylamide and 2- acrylamide-2-methylpropanesulfonic acid by liquor polymerization. The effects of react condition on the absorbency were studied. The absorbencies of resins in a series of solutions of KC1, CaC12 and FeC13 were also investigated. The result indicated that： the influence of reaction conditions on the absorbencies of resins was the same trend, but the opti- mum reaction conditions of P（AA-AM）, P（AA-AMPS） and P（AA-AM-AMPS） were different, as follows： neutrali- zation degree of AA and AMPS were 75%, 65% and 80%, the mass ratio of crosslinking agent and total monomers was all 0. 02%, the mass ratio of initiator and total monomers were 0. 20% ,0.24% and 0. 20%. Different resins with different salt tolerance, P（AA-AM）〈P（AA-AM-AMPS） 〈P（AA-AMPS）. Different sort of salts and different va- lence state of ions influenced the water absorbency in different degree, FeCl3 〉CaCl2 〉KCl.

关 键 词：2-丙烯酰胺基-甲基丙磺酸 丙烯酰胺 丙烯酸 高吸水树脂 结构 

分 类 号：O631[理学—高分子化学] TB34[理学—化学]