Food Packaging chemistry 9 food packaging 9 tensile strength 8 Article 6 Tensile Strength 6 Cellulose 5 controlled study 5 Chitosan 4 Fourier transform infrared spectroscopy 4 Permeability 4 Spectroscopy, Fourier Transform Infrared 4 cellulose 4 infrared spectroscopy 4 permeability 4 physical parameters 4 unclassified drug 4 Animals 3 Chickens 3 Gelatin 3 Starch 3 Young modulus 3 animal 3 chemical structure 3 chicken 3 chitosan 3 gelatin 3 procedures 3 scanning electron microscopy 3 starch 3