Effect of microcrystalline cellulose on properties of paper-plastic composites.

The microcrystalline cellulose/thermoplastic starch (MCC/TPS) film was prepared by melt extrusion method, and the MCC/TPS film was combined with paper by hot pressing method. The results show that the SEM images show that the interface layer of paper-plastic composite has good adhesion. When the addition a-mount of MCC is 5wt%, the mechanical properties of TPS film are improved, and the path of water vapor through TPS film is extended, resulting in the water vapor transmittability of MCC/TPS/paper composite is reduced, and the barrier properties of paper-plastic composite are improved. TPS/paper composites and MCC/ TPS/paper composites have better physical properties (i.e. smoothness, flexibility and folding resistance) than paper alone. Therefore, the addition of MCC can improve the barrier properties and mechanical properties of paper-plastic composite materials to meet the requirements of the food packaging industry for low water sensitive materials. [ABSTRACT FROM AUTHOR]