Table 3.

Mechanical properties [65].

Properties	Units	PLA
ρ (Polymer density)	g/cm3	1.21–1.25
σ (tensile strength)	MPa	21.0–60.0
E (tensile modulus)	GPa	0.35–3.50
ɛ (ultimate strain)	%	2.50–6.00
σs (specific tensile strength)	Nm/g	16.8–48.0
Es (specific tensile modulus)	kNm/g	0.28–2.80
Tg (glass transition temperature)	°C	45–60
Tm (melting temperature)	°C	150–162