Tribology of Polymers, Polymer Composites, and Polymer Nanocomposites combines fundamental knowledge with the latest findings in the area of polymer tribology. From testing of property-related mechanisms to prediction of wear using artificial neural networks, the book explores all relevant polymer types, including elastomers, epoxy-based, nylon, and more while also discussing their different types of reinforcement, such as particulates, short fibers, natural fibers, and beyond. New developments in sustainable materials, environmental effects, nanoscaled fillers, and self-lubrication are each discussed, as are applications of these materials, guidelines for when to use certain polymer systems, and functional groups of polymers. Experimental methods and modeling and prediction techniques are also outlined. The tribology of graphene-based, biodegradable, hybrid nanofiller/polymer nanocomposites and other types of polymers is discussed at length.