Polymerization Induced by N,N,N′,N′Tetraphenyl-p-phenylenediamine Cation Radical Salts

Abstract

ABSTRACT Cation radical and dication of N,N,N′,N′tetraphenyl-p-phenylenediamine (TPDA) having SbF 6-or SbCl6-counterion were synthesized by chemical oxidation and characterized. These salts were shown to be useful initiators for the cationic polymerization of cyclohexene oxide, tetrahydrofuran and N-vinylcarbazole. The dication salt is more reactive than the cation radical salt. The calculated propagation rate constant (Kp) for polymerization of cyclohexene oxide by the cation radical and dication salts (X− = SbF 6 −) of TPDA where, 2.71×l02 and 5.51×l02 M sec−1, respectively.