2.6 Mechanical Test
For the measurement of the mechanical properties, oscillat-ory shear rheology was used. Samples 20mm in diameter and 3mm in thickness were prepared. Rheological experiments were carried out with parallel-plate geometry (200-mm diameter steel with a gap of 1mm) of a Thermo Haake Rheostress RS6000 rheometer (Thermo Scientific, Karlsruhe, Germany). Stress amplitude sweeps were per-formed at a constant frequency of 0.1Hz to fix the amplitude parameter for each sample and to ensure that subsequent data was collected in the linear viscoelastic regime. All the measurements were made in constant deformation control mode over a frequency range from 0.01 to 20Hz. All the measurements were carried out at room temperature.