▎ 摘　　要

NOVELTY - Membrane comprises a polymeric material and at least one additive, where at least one additive is graphene. USE - The membrane is useful: as a geomembrane used at a geotechnical site, where the geotechnical site includes mining, petrochemical, coal ash, coal seam gas, shale gas, biogas, aquaculture, agriculture, waste management, water, landscaping, floating cover applications or geomembrane panels (all claimed); and as geomembrane liners in applications e.g. bioreactors landfills, hot liquid storage, coal seam gas brine ponds and geothermal wastewater ponds. ADVANTAGE - The membrane having graphene protects against the loss of stabilizers and allows for a reduced membrane thickness as compared to a membrane without the presence of graphene to achieve similar mechanical strength properties. The graphene: enhances the mechanical and chemical properties of the membrane as well as the membrane's resistance to UV light; may result in the reduction of the material requirements for specifically-targeted membrane properties; may reduce costs associated with the manufacturing and installation of membranes; may also render the membrane conductive, thinner, lighter and stronger; and has the ability to render a membrane more efficient by minimizing or reducing the material requirements for a targeted membrane property. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: (1) a geomembrane comprising an extruded polymeric layer including graphene and a stabilizer suppressing polymer oxidation; and (2) manufacturing a selected area of polymeric geomembrane, comprising (a) selecting from many master batches comprising polymers and a polymer oxidation suppressing stabilizer, (b) selecting a graphene content to include in the selected area, where at least one of the polymers and stabilizer in the master batches for the selected area decreases as the selected graphene content increases, and (c) extruding the selected master batch to form a geomembrane, where the formed geomembrane includes the selected graphene.