Influence of cellulose fibers on physicochemical properties of biodegradable films based on polysaccharide derivatives

Abstract

The article presents a method of obtaining films based on carboxymethyl polysaccharide derivatives cross-linked with citric acid and reinforced with cellulose fibers (CFs). The addition of CFs to a film improves the mechanical properties of the composite. With the increase of filler content, the water solubility drops from 64 to 61%, respectively, for a system without a filler and that containing 7 wt% CFs, whereas Young’s modulus increases from 4.8 to 24.8 MPa for a film containing 5 wt% filler.

Keywords

• carboxymethyl starch
• carboxymethyl cellulose
• cellulose fibers
• natural composite
• biodegradable film