交替共聚物改性甲壳素对染料吸附性能的初步研究  

Preliminary study on the adsorption of chitin modified by styrene-maleic anhydride alternating copolymer

作　　者：刘廷国[1] 吴小说[1] 郭军[1] 刘天宝[1] 伍光辉[1] Liu Tingguo Wu Xiaoshuo Guo Jun Liu Tianbao Wu Guanghui(College of Chemical ＆ Material Engineering,Chizhou University,Chizhou 24700)

机构地区：[1]池州学院化学与材料工程学院,池州247000

出　　处：《化工新型材料》2017年第10期238-240,243,共4页New Chemical Materials

基　　金：国家自然科学基金(51403024);安徽省教育厅自然科学重点项目(KJ2016A512;KJ2015A282)

摘　　要：利用苯乙烯-马来酸酐交替共聚物(SMA)与半脱乙酰甲壳素共混改性,制得交替共聚物改性甲壳素。产物用红外光谱、固体13 C-NMR和综合热分析进行表征,结果表明甲壳素C6位上的醇羟基与交替共聚物的羰基反应形成酯。探讨了染料初始浓度、改性产物投料量、吸附时间和温度对吸附性能的影响。结果表明,25℃时产物对中性红(NR)、次甲基蓝(MB)和孔雀石绿(MG)的最大吸附量分别为1281、984和1725mg/g;对NR的去除率最大,在20℃,吸附时间为30min时,吸附达到平衡,对NR溶液脱色率达到98%。The styrene-maleic anhydride alternating copolymer modified half deacetylated chitin was prepared.The structure and thermal stability were investigated by fourier transform infrared spectroscopy（FT-IR）,13 C-NMR spectroscopy and thermal analysis,respectively.The results showed that there was ester bond was formed between the alcohol hydroxyl group of C6 position on the chitin and the carbonyl group on the alternating copolymer.The effect of initial concentration of dyes,dosage of modified chitin,contact time and temperature on the adsorption capacity of dyes were studied.The maximum adsorption capacity of neutral red（NR）,methylene blue（MB）and malachite green（MG）reached 1281,984 and1725 mg/g at 25℃,respectively.The decolorization rate of NR was the highest.When the adsorption time was 30 min at20℃,the adsorption reached equilibrium and the decoloration rate of NR solution reached 98%.

关 键 词：甲壳素 交替共聚物 化学改性 吸附等温线 吸附动力学 

分 类 号：O647.3[理学—物理化学] X791[理学—化学]