[djdaugherty]

There is no such thing as a coefficient of friction for one material (e.g. polycarbonate). A coefficient of friction is always between two materials (e.g. polycarbonate and rubber or polycarbonate and wood). You will find many examples of CoF between materials because they vary greatly depending upon the composition of the two materials. The CoF values are determined emperically. Your best bet is to purchase a sheet of polycarbonate and play with it.