Design of self-healing styrene-butadiene rubber compounds with ground tire rubber-based reinforcing additives by means of DoE methodology

•Two full factorial designs to establish the relationship between microstructure and mechanical performance.•The tensile strength can be modelled by the factorial full design with high predictive capability.•The decrease in network density of devulcanised tire residue were statistically more important factor.•Selective network breakage of devulcanised tire residue was negligible.