Preparation and identification of a soluble copolymer from pyrrole and o-toluidine

A series of copolymers were prepared by chemically oxidative polymerization of pyrrole (PY) and ortho-toluidine (OT) in HCl aqueous medium. The yield, intrinsic viscosity, and solubility of the copolymers were studied by chan ging the monomer molar ratio. The resulting PY/OT copolymers were identifie d by FTIR, H-1-NMR, DSC, and WAXD techniques. The experimental results show ed that the oxidative polymerization of pyrrole and o-toluidine is exotherm ic and the resulting polymers exhibit an enhanced solubility in most organi c solvents compared with that of pyrrole homopolymer. The polymer obtained is a real and amorphous copolymer containing pyrrole and o-toluidine units. (C) 2001 John Wiley & Sons, Inc.