高等学校化学学报2001，Vol.22Issue(4)：687-690,4.
NafionTM膜表面改性用等离子体聚合方法提高膜的阳离子选择性
Surface Modification of Ion Exchange Membrane(NafionTM)
The Enhancement of Cation Selectivity by Plasma Polymerization Process
曾蓉 1朱鹤孙 2庞志成 3弋峰2
作者信息
- 1. 北京理工大学材料科学研究中心,北京理工大学化工与材料学院
- 2. 北京理工大学材料科学研究中心,
- 3. 北京理工大学化工与材料学院
- 折叠
摘要
Abstract
An ultra-thin anionic exchange layer containing —NH2 and —CONH2 was deposited on the surface of NafionTM membrane. This layer was deposited from ethylene and ammonia using a glow-discharge plasma polymerization technique. The SEM, ATR(attenuated total reflection) spectra and XPS(X-ray photoelectron spectroscopy) showed that the resulted plasma polymers containing —NH2 and —CONH2 was about 0.5 μm thick. The proton perm-selectivity of plasma-modified NafionTM membrane was expressed by tCu, the transference number of the Cu2+ ion through the membrane which was determined by using NafionTM membrane as the separator in a typical two-compartment cell(0.25 mol/L CuCl2-0.5mol/L HCl｜plasma-modified NafionTM membrane｜1 mol/L HCl). Pretreatment of the NafionTM membrane by oxygen sputtering enhanced the adhesion of plasma polymer onto its surface. The plasma-treated membrane exhibited a high perm-selectivity and its resistance in 1 mol/L HCl was only a little bit higher than NafionTM membrane(<0.5 Ω*cm2).关键词
NafionTM膜/等离子体聚合/表面改性/电阻分类
化学化工引用本文复制引用
曾蓉,朱鹤孙,庞志成,弋峰..NafionTM膜表面改性用等离子体聚合方法提高膜的阳离子选择性[J].高等学校化学学报,2001,22(4):687-690,4.
