摘要
18-冠醚-6(18-C-6)和聚乙烯醇(PVA)改性海藻酸钠(SA)制备了阳膜层(18-C-6+m SA),戊二醛(GA)和PVA改性壳聚糖(CS)制备了阴膜液(m CS),将阴膜液流延于上述阳膜层上,制备了18-C-6+m SA/m CS双极膜。红外谱图表明18-C-6与海藻酸钠已成功交联。分别从双极膜的氢离子渗透性能、溶胀度、I-V工作曲线、交流阻抗、热稳定性能等方面表征了双极膜的性能,实验结果表明,经18-C-6改性的双极膜具有较低的溶胀度,较低的工作电压和膜阻抗,较高的氢离子渗透性能和热稳定性,是一种性能优异的双极膜。
Cation membrane layer（18-C-6＋mSA） was prepared by sodium alginate（SA） modified by polyvinyl alcohol（PVA） and 18-crown-6（18-C-6）. Glutaraldehyde（GA） and PVA was added into Chitosan（CS）. 18-C-6＋mSA/mCS bipolar membrane（BPM） was prepared by a paste method. Infrared spectra indicted that 18-C-6 and sodium alginate had crosslinked successfully. The bipolar membrane was characterized by the hydrogen ion permeability, swelling degree, I-U curve, AC impedance, thermal stability, respectively. The experimental results showed that the 18-C-6＋mSA/mCS BPM exhibited lower swelling degree, lower AC impedance and working voltage, higher hydrogen ion permeability and thermal stability, which was a kind of excellent performance of bipolar membrane.
出处
《广州化学》
CAS
2015年第1期25-30,36,共7页
Guangzhou Chemistry
基金
宁德师范学院大学生创新性项目(0000220135)
并获得省级立项
福建省省属公益类优势领域项目(2014R1015-13)
2014年度农科院院青年科技创新项目(2014CX-14
2014CX-13)
关键词
18-C-6
双极膜
氢离子渗透性能
溶胀度
18-crown-6
bipolar membrane
hydrogen ion permeability
swelling degree
