In order to improve the adhesion between the emeraldine base (EB) film of polyaniline (PANI) and evaporated copper metal, surface modification of EB films via UV-induced graft copolymerization with glycidyl methacrylate (GMA) was carried out. The effects of GMA monomer concentration and UV graft copolymerization time on the T-peel adhesion strength of the resulting Cu/EB laminates were studied. It was found that the adhesion strength between the GMA graft-copolymerized EB (GMA-g-EB) film and evaporated copper increased monotonically with the graft concentration of the GMA polymer. The T-peel adhesion strength between the surface-modified EB film and evaporated copper was increased by almost 10-folds under the optimum surface modification conditions. The chemical compositions of the GMA-g-EB surfaces were studied by X-Ray photoelectron spectroscopy (XPS). The interaction between the GMA-g-EB surface and the deposited copper atoms was investigated in situ by XPS. The epoxide groups of the grafted GMA polymer interacted with the evaporated copper atoms to form a charge-transfer complex, which accounted for the enhanced adhesion of evaporated copper to the GMA-g-EB films.