Tensile Properties

Tensile properties were determined using Zwick Roell Z010 (Zwick Roell, Ulm, Germany) tensile testing machine equipped with a 20 N measuring cell (Class 0.5, ISO 7500-1). The testing speed was set to 1 mm/min. Film strips of 1.5 cm in width and 10 cm in length were used. During the sample stretching, several load and elongation data per second were recorded until the breaking of a sample occurred.
