苯胺电化学聚合的速率测定  

RATE MEASUREMENT OF THE ELECTROCHEMICAL POLYMERIZATION OF ANILINE

作　　者：穆绍林[1] 阚锦晴[1] 孙健 施吉峰 

机构地区：[1]扬州大学理学院化学化工系,江苏扬州225002

出　　处：《扬州大学学报（自然科学版）》2000年第3期9-14,共6页Journal of Yangzhou University：Natural Science Edition

基　　金：国家自然科学基金资助项目!(2 96 730 36 )

摘　　要：使用循环电位扫描法实施了苯胺的电化学聚合 .所用的电解液为苯胺和盐酸溶液 ,以及苯胺、盐酸和氯化钠溶液 .第 4次扫描的两阳极峰 [0 .1 8,0 .75V( vs SCE) ]的峰电流用作苯胺电化学聚合的速率测定 ,它们的聚合速率与苯胺的浓度之间是一级反应 .苯胺的聚合速率强烈地受盐酸浓度的影响 ,当盐酸浓度低于 2 .5mol· L-1时 ,苯胺的聚合速率与盐酸浓度之间是一级反应 .苯胺溶液中 Na Cl的存在加速了苯胺的聚合 .相对于 Na Cl,苯胺的聚合可能是一级反应 ,也可能是零级反应 ,这与 Na Cl溶液的浓度有关 .在给定的酸浓度下 ,根据实验数据 ,提出了一个与苯胺和 Na Cl有关的速率方程 ,该速率方程与实验结果相符 .The electrochemical polymerization of aniline are carried out using the cyclic potential sweep method in both the solution containing aniline and HCl, and the solution containing aniline, HCl and NaCl. The currents of the anodic peaks at 0.18 and 0.75 V (vs SCE) for the fourth scan are taken as the rate measurement of the electrochemical polymerization of aniline. The electrochemical polymerization of aniline are all first order with respect to the concentration of aniline. The polymerization rate of aniline is strongly affected by HCl concentration. The polymerization of aniline is first order with respect to the concentration of HCl below 2.5 mol·L -1 . The presence of NaCl in the aniline solution plays an important role in increasing the polymerization rate. The polymerization rate of aniline is first order or zero order with respect to NaCl, depending on the concentration of NaCl. Based on the experimental data, a rate equation deal with the concentrations of aniline and NaCl is presented at a given acid concentration. The dependence of the polymerization rate of aniline on the concentrations of aniline and NaCl in the rate equation is in good agreement with the experimental data.

关 键 词：苯胺 电化学聚合 聚合速率 速率方程 

分 类 号：O625.631[理学—有机化学]