Crushed tire rubber particles (CR) have been dispersed into a recycled poly(carbonate) matrix (rPC) to obtain an eco-friendly plastic (EFP). A positive synergy was expected from the association of an elastomeric phase to a tough thermoplastic matrix, helping on the other hand to develop a plastic with low impact on the environment. Mechanical melt-mixing alone cannot provide a suitable interface, and led to blends with poor mechanical properties. Consequently, we have investigated different strategies to improve the EFP properties: First, the rubber surface has been treated by flaming or washing with dichloromethane and second, two copolymers, poly(ethylene-co-ethyl acrylate-tert-hydroxyl methacrylate) (E-EA-MAH) and poly(ethylene-co-methyl acrylate-ter-glycidyl methacrylate) (E-MAGMA), were used to compatibilize CR particles with rPC matrix by reactive melt-mixing in an internal mixer. The resulting blends mechanical properties were studied through static tension experiments and interpreted to the light of electronic microscopy fractography analysis and nanoindentation experiments. Significant gain of mechanical properties can be obtained by decreasing CR size under 140 mu m (especially for CR contents between 5 and 20% m/m). To reach similar properties with rubber particles of diameter over 140 mu m (but under 350 um), it is necessary to activate their surface by either dichloromethane washing or flaming. Additional use of a compatibilizer extends the plastic behaviour domain of the EFR rPC-20% w/w CR is the best alternative material of our study.