采用简单的化学氧化聚合直接合成吡咯-苯胺(Py-An)共聚物亚微米颗粒。所得共聚物的产率和电导率受聚合条件如共单体配比、聚合温度和氧单比的影响。当n(Py)/n(An)＝7/3,氧单比为1,共聚温度为20℃时,共聚物具有相对较高的产率(57．5％)和电导率(2．61 S/cm)。红外光谱(FT-IR)的分析结果表明,共聚物分子链由吡咯和苯胺链段构成,并随着共单体配比的不同而变化。扫描电镜(SEM)显示Py-An (7/3)共聚物呈现亚微米尺度的无规则颗粒状形貌,粒径约300~500 nm。相对均聚物来说,Py-An(7/3)共聚物显示出更好的溶解性和赝电容特性。循环伏安(CV)的研究表明Py-An(7/3)共聚物的质量比电容为256 F/g,且1000次循环后仍能保持初始比电容的97．6％。
Pyrrole-aniline(Py-An)copolymer sub-micron particles were directly and productively synthesized by a facile chemical oxidative polymerization of pyrrole and aniline.The polymerization yield and electrical conductiv-ity of the copolymer are significantly influenced by the comonomer ratio,polymerization temperature and oxi-dant/monomer molar ratio.When the copolymerization conditions was at a Py/An molar ratio of 7/3,an oxi-dant/monomer molar ratio of 1,and a temperature of 20 ℃,the obtained copolymer has relatively high yield (57.5%)and conductivity(2.61 S/cm).FTIR indicates that the copolymer chains are composed of polypyrrole and polyaniline segments,and the composition changes according to Py/An molar ratio.Py-An(7/3)copolymer is found to generally have sub-micron scale irregular granular morphology with the particle size of 300-500 nm by SEM.Compared to the homopolymer,Py-An(7/3)copolymer exhibits better solubility and pseudocapaci-tance performance.The results of cyclic voltammetry(CV)test show that the Py-An(7/3)copolymer possesses a specific capacitance of 256 F/g as well as retains 97.6% of the initial specific capacitance after 1 000 cycles.
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