乙腈与水的体积比对SDBS掺杂PPY的微观形貌与性能的影响

serie of PPY was synthesized by chemical oxidation method in the ice bath with using pyrrole monomer as reactants, FeCl3 as oxidant, SDBS as dopant, and the mixture solution of water and acetonitrile as reaction solvent. The as-prepared products were characterized by FT-IR, XRD, SEM etc, and their conductivities were investigated in detail. Through the above studies, the following conclusions are got: when volume ratio of acetonitrile to water increases from 0:10 to 3:7, the morphology of PPY becomes more and more regular. And its average diameter decreases with the increase of volume ratio of acetonitrile to water in the range of 3:7 to 5:5. However, the film-shaped PPY appears in the products and the average particle size decreases when volume ratio of acetonitrile to water reaches 6:4. The yield of PPY decreases when the volume ratio of acetonitrile to water increases. Furthermore, the conductivity of the PPY product is investigated in detail. When volume ratio of acetonitrile to water increases between 0:10 to 2:8, the conductivity of PPY increases. However, the conductivity decreases with the further increase of volume ratio of acetonitrile to water in the range of 3:7 to 6:4.