辉光放电电解等离子体引发合成高吸水性树脂  

Synthesis of Composite Superabsorbent Resin by using Glow-discharge Electrolysis Plasma

作　　者：王莉萍[1] 廖瑞瑞[1] 陶丽红[1] 杨武[1] 李岩[1] 任杰[1] 

机构地区：[1]西北师范大学化学化工学院,兰州730070

出　　处：《化学通报》2013年第7期635-639,共5页Chemistry

摘　　要：以淀粉、丙烯酸和腐殖酸钠为原料,以N,N-亚甲基双丙烯酰胺为交联剂,采用辉光放电电解等离子体在水溶液中引发聚合制备淀粉-聚丙烯酸/腐殖酸钠复合高吸水树脂。考察了放电电压、放电时间,单体与淀粉质量比、腐殖酸钠含量、交联剂、温度及中和度对树脂吸水率的影响。用红外光谱和热重分析分别对树脂进行了结构表征和稳定性测试,结果表明,在优化合成条件下,所得的复合树脂具有较高的吸水性和耐盐性,常温下对蒸馏水吸收量为862g/g,对0.9%NaCl溶液的吸收量为69g/g。Starch-poly （acrylic acid ）/sodium humate superabsorbent composite was prepared with starch, acrylic acid and sodium humate as raw materials and N,N-methylenebisacrylamide as crosslinking agent in aqueous solution by using glow-discharge electrolysis plasma and characterized by FT-IR and TGA. The effects of synthesis conditions, such as the discharge voltage, discharge time, weight ratio of acrylic acid （AA） to starch, amounts of sodium humate, crosslinking agent, polymerization temperature and neutralization degree on the water absorbency of as-prepared composite were investigated. The results showed that at the optimal synthesis conditions the superabsorbent has higher water absorbency, i.e. 862g/g for distilled water and 69g/g for 0. 9% sodium chloride solution.

关 键 词：辉光放电电解等离子体 淀粉 丙烯酸 腐殖酸钠 复合吸水树脂 

分 类 号：TQ324.8[化学工程—合成树脂塑料工业]