Dynamic mechanical thermal analysis of some well defined poly(epsilon-caprolactone)-g-poly(methyl methacrylate)-co-polyurethane samples has been performed. The results show that the hard segment/soft segment phase separation of the polyurethane backbone is decreased with soft segment grafting and that all of the poly(methyl methacrylate) is mixed in with the poly(epsilon-caprolactone). These results confirm previous differential scanning calorimetry studies.