A broader question is what makes you think this would necessarily be conductive, but beyond that: your basic options are melt or solvent casting. Each will have its challenges and the choice will be guided by what kind of equipment you have at your disposal, what kind of polymer morphology you want (free-standing, coated on a substrate, etc.), and so on. You will certainly need silver nanoparticles that are compatible with the polymer - think of your polymer as a solvent, so the nanoparticles will need be capped with something that can integrate them into a matrix of that polarity.
I suggest looking at the robust polymer nanocomposite literature.