SMA-β-环糊精聚合物制备及其对水中亚甲基蓝的吸附性能  

Preparation of Styrene- Maleic Anhydride- β- Cyclodextrin Polymer and Its Application in Adsorption of Methylene Blue

作　　者：毛春艳[1] 陈智欣[1] 李宏占[1] 彭成松[1] 张晓梅[1] 

机构地区：[1]安徽理工大学化学工程学院,安徽淮南232001

出　　处：《云南化工》2015年第2期8-13,共6页Yunnan Chemical Technology

基　　金：大学生创新创业训练计划项目(AH201310361259)

摘　　要：用β-CD与苯乙烯-马来酸酐交替共聚物(SMA)反应,制备了β-CD质量分数为49.8%的水不溶性SMA-β-CD,并用IR、元素分析及热分析表征。以SMA-β-CD为吸附剂,研究了25℃下SMA-β-CD对水中亚甲基蓝(MB)的吸附性能。结果表明,吸附性能随体系p H升高而提高,吸附在120 min内达到平衡。固液比为0.25g/L时,SMA-β-CD对20 mg/L的MB的吸附率为100%;固液比为0.5 g/L时,对213.6 mg/L的MB吸附率达98%。SMA-β-CD对MB的吸附符合Langmuir模型,由Langmuir方程求得的最大吸附量为316.4 mg/g;吸附符合拟二级动力学模型。Water -insoluble styrene -maleic anhydride -β-cyclodextrin （SMA -β-CD）polymer, which contained 49.8% β-CD,was synthesized by β-Cyclodextrin and styrene -maleic anhydride through alternating copolymer reaction.The structure of the SMA -β-CD polymer was characterized by IR,element and thermal analysis.The effects of the adsorption of SMA -β-CD adsorb methylene blue （MB）in water at room temperature were investigated.The results indicated that the adsorption capacity of SMA -β-CD increased along with the rising of pH value.An equilibrium adsorption could be got within 120 minutes. When the solid -liquid ratio was 0.25g·L -1 ,the rate of SMA -β-CD adsorbing MB approached to 100%with the initial concentration of 20 mg·L -1 .When the solid -liquid ratio was 0.5g·L -1 ,the rate of SMA-β-CD adsorbing MB approached to 98% with the initial concentration of 213.6 mg·L -1 .The adsorp-tion of SMA -β-CD to MB was in accordance with Langmuir model.The maximum adsorption capacity ob-tained from the Langmuir equation was 316.4 mg/g,and the adsorption behavior of SMA -β-CD con-formed to pseudo -second -order kinetic model.

关 键 词：SMA-β-CD 吸附 亚甲基蓝 性能 

分 类 号：TQ424.3[化学工程]