辉光放电电解等离子体引发合成复合高吸水性树脂  

Synthesis of composite superabsorbent resin by using glow-discharge electrolysis plasma

作　　者：任杰[1] 陶丽红[1] 高锦章[1] 李亚萍[1] 刘宏伟[1] 

机构地区：[1]西北师范大学化学化工学院,甘肃兰州730070

出　　处：《西北师范大学学报（自然科学版）》2012年第4期47-51,55,共6页Journal of Northwest Normal University(Natural Science)

基　　金：甘肃省自然科学基金资助项目(1010RJZA015;096RJ2A120);甘肃省高等学校基本科研业务费资助项目;西北师范大学青年教师基金资助项目(NWNU-LKQN-08-9)

摘　　要：以丙烯酸、丙烯酰胺和腐植酸钠为原料,N,N′-亚甲基双丙烯酰胺为交联剂,在水溶液中利用辉光放电电解等离子体引发制备了聚(丙烯酸-丙烯酰胺)/腐植酸钠(P(AA-AM)/SH)复合高吸水性树脂.考查了放电电压、放电时间、交联剂含量、腐植酸钠(SH)含量、丙烯酸(AA)与丙烯酰胺(AM)摩尔比和丙烯酸中和度等因素对树脂吸水量的影响.用红外光谱(FT-IR)和热重分析(TGA)分别对产品的结构和稳定性进行了表征,并探讨了pH及NaCl溶液对树脂溶胀行为的影响以及反复溶胀能力和保水率.结果表明,在最佳合成条件下,所得复合树脂具有较高的吸水性和耐盐性,对蒸馏水的吸收量为1 198g.g-1,对0.9%NaCl溶液的吸收量为124g.g-1.Poly（acrylic acid-acrylamide）/sodium humate（P（AA-AM）/SH） composite superabsorbent resin is prepared in aqueous solution by using glow-discharge electrolysis plasma.Acrylic acid,acrylamide and sodium humate are used as raw material and N,N′-methylenebisacrylamide as a crosslinking agent.The synthesis conditions,such as the discharge voltage,discharge time,crosslinking agent,amounts of sodium humate,molar ratio of AA/AM and neutralization degree of acrylic acid,are examined in detail.The structure and thermal stability of the resulting products are characterized by Fourier transform infrared spectroscopy（FT-IR） and thermogravimetric analysis（TGA）.In addition,the influence of pH and NaCl solution on the swelling behavior,reswelling property and water retention are also investigated.The results show that at the optimal synthesis conditions,the superabsorbent resin has higher water absorbency and salt tolerance,i.e.,1 198 g·g-1 for distilled water and 124 g·g-1 for 0.9% sodium chloride solution.

关 键 词：辉光放电电解等离子体 腐植酸钠 复合吸水树脂 

分 类 号：O646.9[理学—物理化学] O631.5[理学—化学]