Preparation of Starch/PVA/CaCO3 Nanobiocomposite Films: Study of Fire Retardant, Thermal Resistant, Gas Barrier and Biodegradable Properties

Starch/PVA/CaCO3 nanobiocomposite films were prepared by the solution casting method. The prepared nanobiocomposite films were characterized by Fourier transform infrared (FTIR) spectroscopy, X-ray diffraction (XRD), field emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and selected area electron diffraction (SAED) methods. The fire retardant, tensile strength and thermal properties of nanobiocomposite films were enhanced with increasing percentage of CaCO3. When the concentration of nano-CaCO3 was increased, the oxygen permeability of starch/PVA/CaCO3 was reduced. The increase in fire retardant and oxygen barrier properties along with improvement in thermal and tensile properties of nanobiocomposite may enable the material suitable for packaging application.