Uniaxial tensile tests were carried out with a Criterion 42 (MTS Systems, Eden Prairie, MN, United States) machine equipped with a low force (10 N) cell. Rectangular uniform pieces (5 mm × 15 mm) were cut and elongated at room conditions using a crosshead speed of 0.2 mm/min with a clamping distance of 7 mm. The Young’s modulus (E) was calculated from the maximum slope of the stress-strain curve (typically around 1–2% strain). Ten replicates per specimen were analyzed.
Storage moduli (E′) were obtained at room conditions by Dynamic Mechanical Analysis (DMA) measurements using a Q800 analyzer (TA Instruments, New Castle, DE, United States) in tension mode. In these tests, the sample is stressed with a low amplitude sinusoidal force and the strain response is simultaneously decomposed into an instantaneous in-phase (elastic) and a delayed out-of-phase (viscous) components. The storage modulus (E′) corresponds to the pure elastic response of the sample. Experiments were repeated with five samples at each daa stage. A more detailed description of the procedure is provided elsewhere (Benítez et al., 2021 (link)).
Storage moduli (E′) were obtained at room conditions by Dynamic Mechanical Analysis (DMA) measurements using a Q800 analyzer (TA Instruments, New Castle, DE, United States) in tension mode. In these tests, the sample is stressed with a low amplitude sinusoidal force and the strain response is simultaneously decomposed into an instantaneous in-phase (elastic) and a delayed out-of-phase (viscous) components. The storage modulus (E′) corresponds to the pure elastic response of the sample. Experiments were repeated with five samples at each daa stage. A more detailed description of the procedure is provided elsewhere (Benítez et al., 2021 (link)).
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