摘要
用椭圆法和电化学方法研究了苯胺在含不同碱金属阳离子的H2 SO4溶液中的聚合反应 ,分析了不同聚合条件下的循环伏安曲线和光学参量Δ、Ψ及光学参量变化速率Vop对扫描电压E的关系曲线。结果表明在慢扫描下无论是否含碱金属阳离子 ,循环伏安曲线的形貌并无明显差异 ,在 0 .4～ 0 .5V区域内均出现了第二阳极峰 ;第一阳极峰峰值的高低说明碱金属阳离子的存在能够影响聚苯胺膜的生长速率 ;聚苯胺膜电极在不同电解液中的循环伏安行为表明已形成的聚苯胺膜的电化学活性不受碱金属阳离子的影响 ,碱金属的嵌入是一个不可逆的过程。
The polymerizations of aniline in the sulfuric acid containing different alkaline metal cations were studied by employing ellipsometry and electrochemical methods. The cyclic voltammetry curves and the curves of optical parameter Δ? Ψ vs Scanning potential as well as the curves of optical tracking rate VOP vs. Scanning potential have been analyzed under different conditions of polymerizations. The results show that the cyclic voltammetry curves have no markedly differences whether there are alkaline metal cations in the electrolytes or not,at low scanning rate. The second anodic current peak appeared in the region of 0.4～0.5 V;the value of the first anodic current peak indicated the alkaline metal cation had an important affect on the growth speed of polymer in the stage of polymerization. The electrochemical behaviors of the formed film electrodes in various electrolytes revealed that the alkaline metal cations didn't affect the redox response of the polymer previously formed. The intercalation of the alkaline metal cations is an irreversible process.
出处
《渝州大学学报（自然科学版）》
2002年第2期60-63,79,共5页
Journal of Yuzhou University(Natural Sciences Edition)
关键词
电位扫描椭圆法
聚苯胺
电聚合
碱金属阳离子
potential scanning ellipsometry
polyaniline
polymerization
alkaline metal cation
