Abstract
The biodegradable polymeric materials can be achieved based on several methods among which, the compounding of natural polymers with synthetic ones has a significant utility. The biodegradable materials based on polyvinyalcohol (PVOH) and starch have a practical interest because can be entirely destroyed in environment, in controllable times based on the PVOH hydrolysis degree. The silicate presence in the PVOH - starch systems determines the increasing of the glass transition with 4 - 11 0C and of the maximum of the melt temperature with 10 0C. If the silicate was functionalizated then its interaction with the polymer is underlined by the melting uniformity . Keywords: polyvinylalcohol, starch, thermic properties, nanocomposites