Embodiments of the present disclosure are directed to articles comprising a crosslinked reaction product of ethyl-ene-based polymer, polyolefin; silane crosslinker; and 1 to 5 weight percent (wt %) of a metallic stearate catalyst. The ethylene-based polymer is silane grafted. The grafted silane enables at least one intramolecular silane crosslinking of the ethylene-based polymer and intermolecular silane crosslinking of the ethylene-based polymer and the polyolefin.