Syntheses of ethyl and ethoxy-substituted polyaniline complexes

Syntheses of ethyl and ethoxy-substituted polyaniline complexes with polyst yrenesulfonic acid were studied. The products were characterized by IR, VIS , EPR, and conductivity measurement. JR spectrum show that the structure of poly(2-ethylaniline)-poly (styrenesulfonic acid) [P(2-E)-PSSA] and poly(o- phenetidine)-poly(styrenesulfonic acid) [P(O-P)-PSSA] complexes is similar to that of polyaniline. EPR and visible spectra indicate the formation of p olarons. The pH value for deprotonation is higher than that of correspondin g HCl salts indicate intimate interaction between polymer chains. Conductiv ity of the complexes is around 10(-2) S/cm. The solubility of P(2-E)-PSSA a nd P(O-P)-PSSA in water is 5.6 g/L and 8.0 g/L, respectively.