循环伏安法制备聚苯胺及其复合物膜的研究  

Preparation & Performance of Polyaniline Film and its Composite Film by Cyclic Voltammetry

作　　者：徐强强[1] 薛琳[1] 汪晓芹[1] 熊善新[1] 褚佳[1] 宫铭[1] 

机构地区：[1]西安科技大学化学与化工学院,西安710054

出　　处：《高分子通报》2013年第12期82-87,共6页Polymer Bulletin

摘　　要：采用循环伏安法在ITO玻璃上合成了高附着强度、均匀致密、循环伏安特性优良的聚苯胺(PAN)膜、聚2,5-二氧基苯胺(PDMA)膜、聚苯胺/聚2,5-二甲氧基苯胺(PAN/PDMA)复合膜,探讨了扫描速率对PAN膜、PDMA膜、PAN/PDMA复合膜的形态和伏安特性的影响,并用FTIR、UV-Vis对其化学结构进行了表征,用EIS对其交流阻抗进行了分析。结果表明:PAN、PDMA、PAN/PDMA三种膜的最佳扫描速率分别为10mV/s、10mV/s和100mV/s,且复合膜的粘附性、表面均匀性、致密性、循环可逆性和电极电容量均优于前两者。苯胺与2,5-二甲氧基苯胺共聚时,两种单体共同聚合时,PAN和PDMA均聚链发生了化学键合,形成的复合膜大分子链的共轭度明显高于纯聚苯胺链的。PAN/PDMA复合膜的交流阻抗低于PAN膜的。Polyaniline（PAN）film,Poly 2,5-dimethoxyaniline（PDMA）,film and Poly（aniline,2,5-dimethoxyaniline）（PAN/PDMA）composite film with high adhesion strength,uniform and excellent cyclic voltammetry were synthesized by cyclic voltammetry on ITO glass.The effect of scan rate on the shape and cyclic voltampere characteristics of PAN film,PDMA film and PAN/PDMA composite film were discussed.The chemical structure and AC impendence was characterized respectively by FTIR,UV-Vis and EIS.The results showed that the optimum scan rate of PAN film,PDMA film and PAN/PDMA composite film were 10mV/s,10mV/s and 100mV/s,respectively.The adhesion,surface uniformity,density degree,cyclic reversibility and electrode capacitance of the composite film are better than that of the two films.PAN and PDMA homopolymerization chains were bonded by chemical bonds and the conjugated degree of macromolecular chains in PAN/PDMA composite film was apparently higher than that of pure PAN chain when aniline and 2,5dimethoxyaniline copolyed.The AC impendence of PAN/PDMA composite film was lower than that of the two films.

关 键 词：循环伏安法 聚苯胺 2 5-二甲氧基苯胺 复合膜 

分 类 号：O631.3[理学—高分子化学]