Blends of polyvinylalcohol with collagen hydrolysate: Thermal degradation and processing properties

The blends of polyvinylalcohol with collagen hydrolysate were studied from the point of view of the effect of collagen hydrolysate on thermal degradat ion and processing properties. Elimination of deliberated acetic acid in re action with NH2 groups of CH can protect PVA against acidic catalysis of de gradation. Using talc instead of silica can eliminate the crossliking effec t in PVA-CH-silica blend when silica is used as antiblock agent. The obtain ed results make possible to use PVA/CH blends for blowing of biodegradable films with CH content up to 30 wt.%.