Table 1.

Temperature dependence of E₁ and E₂ of the PLA, TPU, and PLA/TPU blends.

Material	Modulus	Temperature (°C)
		$10$	$20$	$30$	$40$
PLA	E1 (GPa)	2.65 ± 0.07	2.53 ± 0.06	2.41 ± 0.06	2.31 ± 0.07
	E2 (GPa)	38.6 ± 2.0	23.4 ± 0.7	18.6 ± 0.9	11.2 ± 0.5
PLA70/TPU30	E1 (GPa)	1.59 ± 0.06	1.43 ± 0.05	1.27 ± 0.06	1.15 ± 0.08
	E2 (GPa)	11.5 ± 0.7	7.09 ± 0.42	4.61 ± 0.35	2.99 ± 0.24
PLA50/TPU50	E1 (GPa)	1.05 ± 0.053	0.929 ± 0.055	0.772 ± 0.023	0.707 ± 0.026
	E2 (GPa)	4.97 ± 0.2	3.36 ± 0.28	1.87 ± 0.13	1.28 ± 0.09
PLA30/TPU70	E1 (GPa)	0.425 ± 0.021	0.366 ± 0.026	0.345 ± 0.017	0.309 ± 0.02
	E2 (GPa)	0.779 ± 0.04	0.516 ± 0.028	0.326 ± 0.021	0.232 ± 0.017
TPU	E1 (MPa)	35.6 ± 0.9	30.8 ± 1.2	26.8 ± 0.7	23.9 ± 0.7
	E2 (MPa)	103 ± 6	71.0 ± 4.6	51.4 ± 4.1	37.6 ± 2.4