Fig. 3From: Effect of tungsten disulfide nanotubes on crystallization of polylactide under uniaxial deformation and annealingStress–strain curves (average of ten repeats) up to 100% strain, recorded upon drawing the PLA and PLA-WS2 films at T = 90 °C with a stretching rate of 500 mm/min (a) and calculated elastic moduli (b)Back to article page