Abstract
Measurements of resilience were made on Terylene, Poluran, Urethaneblock polymer, Derline and Penton at various temperature. The α dispersion region, associated with transition region of segmental motion, was observed at 105-110°C, 30°C, -40°C, -50°C and 28°C respectively. An apparent activation energy of α transition of Terylene was 89.4Kcal/mol. In Terylene, β dispersion was found at about -30°C with an apparent activation energy of 9.3Kcal/mol, and it was corresponded to the motion of main chain that has about one repeat unit.
