双胍化壳聚糖全互穿网络阴离子交换膜的制备及表征  

Preparation and Characterization of Chitosan Biguanide Full Interpenetration Anion Exchange Membrane

作　　者：王一夫[1] 崔珺[1] 王吉林[1] 王璐璐[1] 封瑞江[1] 佟春城 Xiaojie Yu;Yibo Wu;Jing Mao;Yushun Jin;Shuxin Li;Dan Yang;Hao Wang(Department of Material Science and Engineering, Beijing Key Laboratory of Special Elastomeric Composite Materials, Beijing Institute of Petrochemical Technology, Beijing 102617, China;College of Material Science and Engineering, Beijing University of Chemical Technology, Beijing 100029, China;Beijing Key Laboratory of Functional Materials for Building Structure and Environment Remediation , Beijing University of Civil Engineering and Architecture, Beijing 102612, China)

机构地区：[1]辽宁石油化工大学化学化工与环境学部,辽宁抚顺113000 [2]中国石油抚顺石化分公司研究院分析研究所,辽宁抚顺113004

出　　处：《高分子材料科学与工程》2018年第6期36-41,48,共7页Polymer Materials Science & Engineering

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);辽宁石油化工大学博士启动基金(2013XJJ-006)

摘　　要：以壳聚糖(CS)和双氰胺为原料,在一定温度下通过亲核加成合成壳聚糖双胍盐酸盐(CGH),并以三聚氰胺(MA)为交联中间体,戊二醛为交联剂制备具有全互穿结构的阴离子交换膜(CGH-MA)。对该系列膜进行了红外、热重分析以及力学性能等测试,并探讨了三聚氰胺含量对阴离子交换膜离子交换能力、导电能力以及耐碱稳定性的影响。实验结果表明,三聚氰胺含量为4%时,该膜的离子交换能力最高可达2.47 mmol/g,70℃电导率达到4.4×10^(-2)S/cm,该膜在60℃2 mol/L KOH溶液中浸泡192 h后,电导率未有明显变化,表现出优异的耐碱稳定性。A novel derivative,chitosan biguanide hydrochloride（ CGH） was synthesized by nucleophilic addition process at a certain temperature using chitosan（ CS） and dicyandiamide as raw materials. Then the anion exchange membrane（ CGH-MA） with fully interpenetrating structure was prepared by using melamine（ MA） as crosslinking intermediate and glutaraldehyde（ GA） as crosslinking agent. The obtained membrane was characterized by FT-IR,TGA,mechanical properties measurement and so on,then effects of melamine content on IEC,OH-conductivity and alkaline stability of membrane were investigated. Results show that the prepared CGH-MA4% membrane with the highest IEC value of 2. 47 mmol/g reaches a OH-conductivity of 4. 4 × 10-2 S/cm at 70 ℃ and no obvious changes can be observed in OH-conductivity after immersing in 60 ℃ 2 mol/L KOH solution for 192 h,indicating an excellent alkaline stability.

关 键 词：阴离子交换膜 双胍盐 壳聚糖 双氰胺 

分 类 号：TQ425.23[化学工程]