production [1–4]. Recently the development of partially or totally
biodegradable materials based on starch, in combination with synthetic
thermoplastic polymers has been the subject of considerable
research effort [5]. Starch, owing to its reproducibility, availability,
and relatively low price, becomes a key raw material for the production
of biopolymers and biocomposites.
Native starch should be modified by plasticization to improve
its processability. Common way of plastification is extrusion of
native starch in presence of plasticizers, mostly glycerine and
water [7–9]. Use of plasticizers decreases the glass transition