龙须菜吸水剂的微波辐射制备工艺及性能  

Preparation of Superabsorbent With Gracilaria Lemaneiformis Under Microwave Irradiation and Its Performances

作　　者：许平凡[1] 刘明华[1] 黄漂漂[1] 郭育民[1] 

机构地区：[1]福州大学环境与资源学院,福建福州350108

出　　处：《石油化工高等学校学报》2010年第1期30-33,38,共5页Journal of Petrochemical Universities

基　　金：福建省高等学校新世纪优秀人才支持计划(ZY2006-20)

摘　　要：采用微波辐射合成方法,以龙须菜为原料,丙烯酸(AA)和丙烯酰胺(AM)为接枝单体,N,N′-亚甲基双丙烯酰胺(MBA)为交联剂,过硫酸钾为引发剂合成超强吸水剂LSAP,探讨制备吸水剂的最佳工艺条件,并对产物的结构、吸液速率、保水性能进行研究。结果表明,龙须菜吸水剂的最佳制备工艺为:单体/龙须菜质量比为2∶1,引发剂和交联剂的质量分别为单体质量的0.4%和0.06%,微波功率为500W时,合成的LSAP吸去离子水、吸生理盐水和尿液分别为1102、104、86.1g/g,此外产物具有较快的吸水速率和较好的保水能力。To prepare a kind of superabsorbent polymers by gracilaria lemaneiformis,superabsorbent polymer was synthesized by means of microwave irradiation. Acrylic acid and acrylamide were grafted onto gracilaria lemaneiformis by using potassium persulfate as an initiator in the presence of N,N＇-methylenebisacrylamide （MBA） as a crosslinker. The univariate analysis was visually analyzed to choose the optimal conditions. The structure of LSAP was confirmed while the absorbing properties,swelling rate and water retention were investigated. The optimum conditions show that the mass ratio of monomer to gracilaria lemaneiformis is 2∶1,the mass amount of initiator is 0.4%,the mass amount of crosslinker is 0.06% and the microwave power is 500 W respectively. Under the optimum condition,the absorbency of LSAP is up to 1 102 g/g in deionized water,104 g/g in NaCl and 86.1 g/g in artificial urine,respectively. The performance test of LSAP indicates that it has faster absorbent velocity and excellent water retention.

关 键 词：龙须菜 微波辐射 吸水剂 保水性能 

分 类 号：TQ317[化学工程—高聚物工业]