ELASTOMERS AND PLASTICS Sustainable Recycling of EPDM Rubber: Investigation of the Aging Behaviour of recycled EPDM Waste

This aging study examined EPDM rubber waste, devulcanized by dibenzamido diphenyl disulfide (DBD) and activated with a low molecular weight EPDM polymer (LP). The amounts of curing system, DBD, and LP were varied below 200 °C in a mixer and a twin-screw extruder.

Rubber is a complex mixture of polymer, filler, activator, accelerator, and crosslinker, playing a significant role in the plastics industry. It is widely used as a key component in tires, seals, membranes, and other applications. Over the past decade, substantial efforts have been made to recycle elastomers, with numerous scientific publications reporting on the activation or devulcanization of rubber waste.