What are the challenges associated with recycling cross-linked rubber materials?

Recycling cross-linked rubber materials presents several significant challenges due to their thermoset nature. The primary challenge is the presence of chemical cross-links, which form a three-dimensional network structure that prevents the rubber from being melted and reprocessed like thermoplastics. This makes conventional melt processing techniques ineffective for recycling cross-linked rubber. Devulcanization, the process of breaking down these cross-links, is often incomplete or requires harsh condi....