RECLAMATION OF VULCANIZED RUBBER BY CHEMICAL DEGRADATION (XIV)

OXIDATIVE DEGRADATION OF VARIOUS SYNTHETIC RUBBERS BY PHENYLHYDRAZINE-IRON (II) CHLORIDE SYSTEM

Abstract

Degradation of various synthetic rubbers and related polymers by phenylhydrazine-iron(II) chloride system was investigated in benzene solution at 30°C under air. The polymers were found to undergo the degradation in the following order of ease: synthetic isoprene rubber>cis-1, 4-polybutadiene>styrene-butadiene rubber_??_chloroprene rubber_??_1, 2-polybutadiene>butyl rubber>polystyrene.