Table 1.

Glass transition temperature (T_g) and variation of specific heat (ΔC_p) at the glass transition temperature for PEUA and PEG-functionalized polyurethanes. The glass transition temperature of the free soft phase (PPO) is also reported, for comparison. ^(*) The subscript indicates that the PEUA:PEG molar ratio employed during functionalization. Indeed, it was not possible to determine the functionalization degree for this polymer, as it is insoluble in common solvents.

Polymer	Tg (°C)	ΔCp (J/g*K)
PEUA	−11 ± 2	0.50 ± 0.02
PEUA-PEG1:2 (*)	−33 ± 2	0.39 ± 0.02
PEUA-PEG20	−29 ± 2	0.40 ± 0.03
PEUA-PEG30	−27 ± 2	0.43 ± 0.03
Soft phase (PPO)	−67	-