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Performance of JF/PP composites with different residual gum rates: (a) tensile fracture surface of 19.52% residual gum, (b) tensile fracture surface of 12.23% residual gum, (c) tensile fracture surface of 3.96% residual gum, (d) mechanical properties with different residual gum rates, (e) breaking elongation with different residual gum rates, and (f) sound absorption performance with different residual gum rates.
