分形结构聚吡咯膜的界面聚合与电容特性表征  

Interfacial Polymerization and Capacitive Properties of Multifractal Dimensions Polypyrrole Film

作　　者：黄天柱[1] 杨庆浩[1] 屠钟艺 李会录[1] 杨林涛[1] 

机构地区：[1]西安科技大学材料科学与工程学院,陕西西安710054

出　　处：《高分子材料科学与工程》2015年第2期41-45,共5页Polymer Materials Science & Engineering

基　　金：国家重大科技专项资助项目(2011ZX06004-009);国家自然科学基金资助项目(21204072);陕西省教育厅科学研究计划项目(2010JK691)

摘　　要：以Fe Cl3为氧化剂,通过界面聚合手段,制备了具有三维分型结构的聚吡咯(PPy)薄膜材料。研究在不同聚合温度下得到PPy薄膜的差异,并通过扫描电子显微镜、傅里叶变换红外光谱以及循环伏安曲线进行结构和性能的表征。结果表明,聚合温度在0~30℃内对PPy分子结构影响不大,但对分子堆积的微结构作用明显;升高聚合温度,PPy比电容下降;聚合温度为0℃时,在1 mol/L Na NO3电解液中,扫描速率为50 m V/s时,PPy电极比电容为448.2 F/g,循环1000次后保持87.3%。Multifractal dimensions polypyrrole(PPy) films were successfully prepared using ferric perchloride as oxidant via interfacial polymerization method. The differences in PPy films prepared at different polymerization temperature were investigated. The structure and capacitive properties were characterized by SEM,FT-IR and cyclic voltammetry(CV) curves. The results indicate that when the effect of polymerization temperature range from 0 ℃ to 30 ℃ on molecular structure is inconspicuous,but on microstructure is very significant. The specific capacitance of PPy is decreased with increase of the polymerization temperature,and the PPy electrode specific capacitance at 448. 2 F/g is obtained when the PPy material is prepared at 0 ℃,and the electrode was measured at the scan rate of 50 m V/s in 1 mol/L Na NO3 aqueous solution. Additionally,cyclic stability tests show that specific capacitance of electrodes maintains 87.3% of the initial value up to 1000 redox cycles.

关 键 词：界面聚合 聚吡咯 聚合温度 比电容 

分 类 号：TQ316.33[化学工程—高聚物工业]