Which mechanism causes the decreased elasticity observed in vulcanized rubber exposed to elevated temperatures?

💡 Explanation

When vulcanized rubber is heated, dissociation of polysulfide crosslinks occurs because thermal energy overcomes bond strength causing chain segments to become free and leading to loss of elasticity. Therefore scission of cross-links result, rather oxidation, etanglement, or crystalisation occurring which involving different mechanisms.

• Which consequence occurs when microwave oven magnetron frequency drifts outside designed range?
• Which consequence results when multi-path interference occurs within integrated fiber optic gyroscope?
• Which risk increases when exceeding materials curie temperature?
• Which occupancy outcome manifests when degenerate atomic orbitals experience crystal field splitting?
• Which outcome occurs when lithium atoms bond in a molecule?
• Which outcome occurs when a shape-memory alloy undergoes an austenite-martensite phase transition under load?