聚丙烯酸水凝胶的制备及其对罗丹明B的吸附性能  

Preparation of Poly(Acrylic Acid) Hydrogel and Its Adsorptive Property for Rhodamine B

作　　者：杜佳星[1] 田博士[2] 王丹[1] 乔君[1] 陈中淼 刘少华[1] 

机构地区：[1]周口师范学院化学化工学院,河南周口466001 [2]周口师范学院稀土功能材料及应用重点实验室,河南周口466001

出　　处：《广州化工》2016年第13期70-72,共3页GuangZhou Chemical Industry

基　　金：周口师范学院化学化工学院大学生创新基金(HYDL201401);河南省分析化学重点学科资助

摘　　要：采用自由基聚合法制备了p H敏感水凝胶聚丙烯酸,研究了该水凝胶在不同p H溶液中的溶胀行为。结果表明,聚丙酸水凝胶在酸性溶液中溶胀率较低,在碱性溶液中溶胀率较大,具有明显的p H敏感性能。以该水凝胶为吸附剂,研究了其对染料罗丹明B的吸附性能。结果显示,在p H=2.0的酸性条件下,聚丙烯酸水凝胶对罗丹明B的吸附率较大,而在p H=7.0的中性溶液中对罗丹明B的吸附率较小,并且聚丙烯酸水凝胶具有较好的重复利用性能。In this study,p H-responsive poly（acrylic acid）（PAA） hydrogel was prepared via free radical polymerization.The swelling behaviors of PAA in aqueous solution at different p H values were investigated.The results demonstrated that the swelling ratio of PAA in acidic solution was much lower than that of in basic solution.Using the PAA as adsorbent,the adsorptive performance of PAA for rhodamine B was also investigated.The results showed that the adsorption rate for rhodamine B at p H = 2.0 was much higher than at p H = 7.0.In addition,PAA hydrogel have a good recycle rate for adsorption of rhodamine B.

关 键 词：聚丙烯酸 水凝胶 罗丹明B 吸附 

分 类 号：O65[理学—分析化学]