Journal
POLYMER TESTING
Volume 80, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2019.106080
Keywords
Cationic starch; Cellulose nanocrystals; Bio nanocomposite films; Barrier properties; Mechanical properties; Paper coating
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In this research, an environmentally friendly and biodegradable cationic starch (CS)/nanocrystalline cellulose (NCC) nanocomposite coating was produced and it was applied to improve the mechanical, barrier and physical properties of packaging kraft paper via surface coating. The mechanical and barrier properties of the paper were affected by the CS/NCC nanocomposite coating and it was the subject of investigation. CS/NCC nanocomposites were prepared by the solvent method. Structural and morphological properties of the nanocomposite were studied by FESEM and TEM observation. Results showed that the increased NCC nanoparticles loading, increased the tensile strength, oil resistance and air resistance of the coated paper. Also, the water absorption of the coated paper decreased 50% at 5 wt% NCC concentration. In our study it was concluded that the optimized amount for the NCC nanoparticles (among, 3 wt%, 5 wt%, and 7 wt%), is 5 wt%. The CS/NCC nanocomposite coatings are then proposed as a favorable booster which intensifies the mechanical and barrier properties of the paper in the food packaging application.
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