OXIDATIVE POLYMERIZATION OF PYRROLE IN POLYMER MATRIX

The oxidative matrix polymerization of pyrrole (Py) by Ce(IV) in the p resence of Polyacrylic acid (PAA) has been studied to obtain water-sol uble and insoluble products. The role of the PAA, Pyrrole, and Ce(IV) concentration, order of component addition, the structure of polymer m atrix [PAA, Hydroxy Ethyl Cellulose (HES), Poly-N-vinylpyrrolidone (PV P)], and model unit of PAA (propionic acid), on the polymerization sys tem were investigated. Interaction of PAA with insoluble polypyrrole ( PPy) and the interpolymer complex formation were investigated along wi th the aggregation of PPy onto the matrix polymer followed by spectral shifts. FTIR results of insoluble products obtained from the PAA-Py-C e(IV) system and solubility of the system is explained in light of the mechanism of the polymerization of pyrrole on the polymer matrix. (C) 1995 John Wiley and Sons, Inc.