2.3. Films preparation
Thermoplastic starch films were obtained by thermocompression
using an hydraulic press, following the processing
conditions reported in a previous work (Castillo et al., 2013). Mixtures
were conditioned at 25 C and 60% relative humidity (RH) and
films were prepared at 140 C and 150 kg cm2 during 6 min. Before
characterization, films were conditioned at 25 C and 60 % RH. Film
thickness was measured at least in ten different locations.