β-环糊精交联聚合物对铜、铅和锌的吸附性能  

Adsorptivity of Acrylamide/β-Cyclodextrin Acylated/Allyl-Biphenyl Ether Crosslinked Copolymer for Cu2+,Pb2+ and Zn2+

作　　者：赵梦奇[1] 买地尼亚提.巴斯提 司马义.努尔拉 

机构地区：[1]新疆大学化学化工学院,新疆乌鲁木齐830046 [2]新疆农业大学化工学院,新疆乌鲁木齐830052

出　　处：《石油化工》2013年第6期676-680,共5页Petrochemical Technology

基　　金：新疆维吾尔自治区自然科学基金项目(200821123);国家自然科学基金项目(21063013;21064009)

摘　　要：β-环糊精经微波法酰化制得丙烯酸β-环糊精酯(β-CD-AA),再与烯丙基-联苯基醚(ABE)、丙烯酰胺(AM)、N,N-亚甲基双丙酰胺共聚合成β-CD交联聚合物AM/ABE/β-CD-AA,分别采用FTIR和TG技术对其结构和热稳定性进行了表征。以该聚合物为吸附剂,考察了金属离子溶液初始质量浓度、吸附温度及体系pH等条件对Cu2+,Pb2+,Zn2+吸附性能的影响。实验结果表明,AM/ABE/β-CD-AA共聚物对Cu2+,Pb2+,Zn2+的静态吸附量不同,其中,对Zn2+的吸附性能较为突出:在35℃、Zn2+初始质量浓度200mg/L、体系pH=3～4时,最大静态吸附量达50.1mg/g;AM/ABE/β-CD-AA共聚物对Cu2+,Pb2+,Zn2+的吸附符合Freundlich吸附等温方程。β-cyclodextrin crosslinked copolymer AM/β-CD-AA/ABE was synthesized by crosslinking β-cyclodextrin acylated(β-CD-AA) with allyl-biphenyl-ether(ABE):acrylamide(AM) and N,N-methylene double propionamide,and characterized by means of FTIR and TG.The effects of the initial mass concentrations of metal ions(Cu2+,Pb2+ and Zn2+),ion solution pH and temperature on the adsorptivity of the copolymer were investigated.The results show that the adsorption capacities of AM/β-CD-AA/ABE copolymer for Cu2+,Pb2+ and Zn2+ in solutions are different,among which the static adsorption capacity for Zn2+ is the maximum,50.1 mg/g under the conditions of 35 ℃,initial mass concentration of Zn2+ 200 mg/L and pH 3-4.The adsorption equilibriums of Cu2+,Pb2+ and Zn2+ on the copolymer accord with Freundlich adsorption isotherm.

关 键 词：丙烯酸β-环糊精酯聚合物 微波 重金属 吸附能力 

分 类 号：TQ326.4[化学工程—合成树脂塑料工业]