采用静态聚合法,以过硫酸铵为氧化荆,使苯胺与吡咯进行共聚,制备了高产率(88%)的纳米结构苯胺/吡咯(PANPY)共聚物.研究结果发现,苯胺/吡咯摩尔比和聚合介质对共聚物的形貌有重大影响.以1.0 mol/L,盐酸溶液为介质,苯胺/吡摩尔比为90/10时,可制得直径为70 nm～90 nm、长为1.3 μm的共聚物纳米纤维;苯胺/吡咯摩尔比为50/50时,得到平均粒径约为400 nm的杨梅球状共聚物颗粒,透射电子显微镜的结果表明这些杨梅球状共聚物颗粒是由直径为5nm,长25 nm的共聚物微小纳米纤维自组装而成.而以0.1 mol/L NaOH水溶液为反应介质,则可以得到外直径为1.8 μm～2.6μm的自组装共聚物微球.
Nanostructural poly(aniline-co-pyrrole)(PANPY)copolymers with a high yield(88%)were synthesized by unstirred polymerization of aniline(AN)and pyrrole(PY)with ammonium peroxydisulfate as an oxidant. It is found that the morphologies of the copolymer strongly depend on the aniline/pyrrole molar ratio and polymerization medium species. PANPY(90/10)copolymer nanofibers in diameters of 70～90 nm and lengths of 1.3 μm were prepared in 1.0 mol/L HCi at 0 ℃ for 24 h, whereas PANPY(50/50)eopolymer waxberry-like spheres (400nm in diameter)were produced during the polymerization in 1.0 mol/L HCI at 0 ℃ for 24 h. Transmission electron microscopy(TEM)image reveals that the PANPY(50/50)copolymer waxberry-like spheres are constructed with their own nanofibers by self-assembly process. While the PAN/PY(90/10)copolymer self-assembled microspheres(1.8μm～2.6 μm in outer diameter)were obtained by changing the reaction medium from 1.0 mol/LHCI to 0.1 mol/L NaOH.
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