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Stress–strain curves of the original and self-healed composites at 50 °C at various healing times, (a) NR/50S-T and (b) DNR/50S-T, and (c) comparison of mechanical performance of the healed samples at 50 °C after 24 h healing time. (d) Healing efficiencies of NR/50S-T and DNR/50S-T composites at various healing times.
