The temperature Tγ corresponds to the glass transition of crystalline soft segments from stiff glassy stage to compliant rubbery stage; the temperature Tα is associated with the glass transition of crystalline hard segments due to the breakdown of hydrogen-bonded interactions of van der Waal’s forces between the rigid and flexible segments of TPU, while at the temperature Tβ, the short-range order translation, and reorientation motions within both the soft-phase and hard-phase crystallites, occur [15].