Methods and formulations for bonding dissimilar materials

A method of bonding a first material to a second material, the first and second materials being dissimilar, wherein

• the first material comprises a non-polyvinyl chloride (Non-PVC) polyolefin polymer, wherein the Non-PVC polyolefin polymer is amorphous or has a degree of crystallinity in the range of about 0.1% to about 50% crystallinity;
• the second material comprises a rigid amorphous material having a tensile modulus in the range of about 1800 to about 3000 MPa, a PVC having a Shore A hardness in the range of about 70 to about 85, or a combination thereof;
• the method comprising:
• i.) modifying the first material with a polar functional group, the polar functional group increasing an affinity of the first material to the second material, wherein modifying the first material comprises:
• grafting the polar functional group to the first material via a reactive extrusion, wherein the reactive extrusion comprises activating the first material with an initiator to provide an activated material;
• ii.) bonding the first material to the second material, wherein bonding the first material to the second material comprises integrating the modified first material to the second material by applying a solvent at an interface between the modified first material and the second material.