Figure 3.

An engineering stress-strain plot of Type A PEU whole TEVG (250 μm) under wet condition using uniaxial tensile testing. The tensile properties of the PEU grafts were measured using an Instron 3365 universal materials testing machine. The gauge length was 10 mm and the crosshead speed was set at 10 mm min⁻¹. The elastic modulus of the grafts, ultimate tensile stress (UTS) and elongation at break (%) were obtained from the stress-strain curve. Results presented are average values for six individual measurements (n=6). The graft scaffolds showed averaged elastic modulus of 1.8 ± 0.1 MPa, ultimate tensile strength of 1.7 ± 0.2 MPa and elongation at break of 598 ± 26 %.