Electrostrictive Energy Conversion of Polyurethane with Different Hard Segment Aggregations

Table 2

Young’s modulus, dielectric constant (𝜀_𝑟′), 𝑀₃₁ coefficient, and FoM of the PU/DMF and PU/DMSO samples.

Sample	𝑌 (MPa)	𝜀𝑟 ′; (at 20 Hz)	−𝑀31 (m^2/V^2)	FoM; (N^2m^3/V^4·F)
PU/DMF	25.3	6.77	1.7×10^−18	3.2×10^−11
PU/DMSOA	26.5	6.68	1.6×10^−18	3.1×10^−11