3.2. Water solubility
Due to the hydrophilic characteristic of the TPS matrix,
the water solubility is an important parameter in terms of
the practical application of these materials, and the results
obtained are presented in Table 1.
The uncoated TPS25/PLA and TPS30/PLA sheets showed
no significant difference in water solubility, in other words,
the glycerol concentration in the blend did not affect the
solubilityof the sheets,probably due tothe effect of the PLA
incorporation.