羧酸型乳酸酯基水凝胶的吸附性能探析  

Primary investigation on the adsorption properties of lactate-based hydrogel containing carboxylic groups

作　　者：徐静[1] 萧聪明[1] 何雪蕾[1] 

机构地区：[1]华侨大学材料科学与工程学院,福建厦门361021

出　　处：《化工科技》2013年第1期5-8,共4页Science & Technology in Chemical Industry

基　　金：福建省自然科学基金项目(2010J01291);中央高校基本科研项目(JB-JD1001)

摘　　要：自制的不饱和乳酸酯基大单体(LEM)在过硫酸钾(KPS)引发下,与丙烯酸(AA)进行自由基交联反应,制得乳酸酯基凝胶(LEMA)。分析了LEMA凝胶的酸敏吸水溶胀、吸附重金属离子以及稀土金属离子的性能,并探讨了AA用量对凝胶吸附性能的影响。结果表明:m(AA)∶m(LEM)=40%时所得的凝胶,其对金属离子的吸附容量大于m(AA)∶m(LEM)=20%所得的凝胶;此外,凝胶对铅离子的吸附容量明显高于对铜和铈离子的吸附。An unsaturated lactate-based macromonomer（LEM）was cross-linked with acrylic acid（AA） by using potassium persulfate（KPS）as initiator, which generated a lactate-based gel （LEMA）. The properties of LEMA gel such as pH-sensitive swelling in water, adsorption of heavy metal ions as well as rare earth metal ion were investigated. It was found that the properties of LEMA gel were affected with the amount of AA. The adsorption capacities of the gel that obtained from m（AA） ： m（LEM）= 40% were higher than that prepared from rn（AA） ： m（LEM）=20%. Moreover, the capacity of LEMA gel adsorbing lead ion was significantly higher than that for cerium or cupper ion.

关 键 词：乳酸酯基 水凝胶 溶胀 吸附 酸敏 性能 

分 类 号：O63[理学—高分子化学]