Cold rubber, a variant of SBR, exhibits greater tensile strength and resistance to abrasion than sta — Polymers Chemistry Question

💡 Solution & Explanation

Cold rubber is a styrene-butadiene copolymer prepared at low temperatures ranging from $-18^\circ C$ to $5^\circ C$. To achieve reasonable reaction rates at these low temperatures, a highly reactive redox initiator system is employed instead of standard thermal free-radical initiators.