preparation and characterization of micro cellulose moisture absorbent pad for food packaging applications

In this research, the natural film based on starch and cellulose on a micro-scale was produced and its properties were investigated in terms of sheeting ability to absorb moisture in food packaging. for this purpose, ground cellulose fibers with 60-micrometer mesh were dissolved in 1% acetic acid solvent, starch, and glycerol. the resulting solution was converted into a film by casting the evaporation method and drying at ambient temperature. the properties of biodegradable biofilms such as swelling degree (sd), water vapor permeability (wvp), tensile strength (ts), and elongation at break (eb) were evaluated at various thicknesses and times. results indicated that the maximum amount of sd of biopolymer (5.91) was obtained in thickness group 1 ( gt; 0.1mm) and during 30 min of storage. the relatively high strength of the micro cellulose (mc) film was significant (6.78 ± 0.76 n) and its permeability increased by increasing the thickness of the biofilm. the results showed that due to the hydration ability and strength of the mc film can be used as a moisture-absorbent bio pad for food packaging purposes.