2.2.2. Characterization of Polymeric Blends

The surface tension of the blends was measured at T = 30 ◦C with a tensiometer (DY-300, Kyowa, Japan) (measurement range 0–300 mN/m) equipped with a platinum plate of 2.5 cm × 1 cm.

The electrical conductivity was determined by a conductometer (FiveGoTM-Mettler Toledo, Italy) equipped with the LE703-IP67 sensor.

The penetrometry was measured using the Texture Analyzer TA-XT plus (ENCO, Italy), equipped with an A/TG measuring system and a 5 kg load cell. The analysis was performed employing a Perspex 20 mm cylinder probe (P/20P; Batch N◦ 11434). The measuring probe was lowered at a 0.50 mm/s speed up to a 3 mm penetration distance. The penetration force was recorded as a function of probe displacement.
