Solving the Dichotomy between Self‐Healing and Mechanical Properties in Rubber Composites by Combining Reinforcing and Sustainable Fillers

The dichotomy between mechanical performance and repairability is a well-known fact in the self-healing field. One alternative to overcome this trade-off inclusion of reinforcing fillers. In research, hybrid reinforced styrene-butadiene rubber (SBR) composites are developed by combining mechano-chemically modified ground tire (mGTR) with carbon black (CB). SBR matrix systematically analyzed means dynamic analysis broadband dielectric spectroscopy. composite 20 phr mGTR CB maintains healing efficiency unfilled (80%) improves its tensile strength 300%, balancing perfectly well both properties. determined at different damage levels. microscopic scale easier recover does not depend on presence fillers, while recovery macroscopic level clearly relies addition filler, more demanding conditions.