戊二醛含量对季铵化壳聚糖耐碱性能影响的研究  

The influence for quaternized-chitosan with different contents of glutaraldehyde

作　　者：崔珺[1] 王璐璐[1] 王吉林[1] 封瑞江[1] 

机构地区：[1]辽宁石油化工大学化学化工与环境学部石油化工学院,辽宁抚顺113001

出　　处：《应用化工》2016年第3期461-465,共5页Applied Chemical Industry

基　　金：辽宁省科技厅博士启动项目(20141126);辽宁省教育厅科学研究一般项目(L2013153);抚顺市科学技术发展资金计划项目(20141115);辽宁石油化工大学博士启动基金(2013XJJ-006)

摘　　要：以壳聚糖(CS)和环氧丙基三甲基氯化铵为原料制备季铵化壳聚糖(QCS),并以戊二醛(GA)为交联剂,制备一系列交联剂含量不同的阴离子交换膜。将其在常温下浸泡于2 mol/L Na OH溶液中24 h,考察其含水率、溶胀度、机械性能、电导率以及离子交换量的变化情况。结果表明,交联剂的加入可以提高阴离子交换膜的耐碱性能,并随着交联剂含量增加其耐碱性能随之增强。戊二醛质量分数为1.25%的膜,于2 mol/L Na OH溶液中浸泡24 h后,损失离子交换量为4.67%,在70℃条件下损失的电导率仅为7.5%。表明交联有助于提高阴离子交换膜的耐碱性。Quaternized-chitosan（ QCS） was synthesized based on the chitosan（ CS） and（ 2,3-epoxypropyl） trimethylammonium chloride was taken as raw materials. Then,a series of anion exchange membranes with different content of crosslinking agent was prepared,which was carried on the QCS was crosslinked by using the glutaraldehyde（ GA） as a crosslinking agent. The anion exchange membrane was soaked in2 mol / L Na OH solutions for 24 h at room temperature. Water uptake,swelling ratio,mechanical properties,electrical conductivity and ion exchange capacity were investigated. The results show that the alkali resistance of the anion exchange membrane was improved by adding the crosslinking agent. Corresponds to the mass fraction of glutaraldehyde was 1. 25% by soaking the membrane in 2 mol / L Na OH solution for24 h the loss of IEC was 4. 67% and the loss of electrical conductivity was only 7. 5% at the temperature of 70 ℃. Thus,crosslinking was an effective method to improve alkali resistance for the anion exchange membrane.

关 键 词：季铵化壳聚糖 戊二醛 交联剂 耐碱性 

分 类 号：TQ425.236[化学工程]