RESEARCH ON EDIBLE SUPERHYDROPHOBIC COATINGS FOR FOOD PACKAGING MATERIAL

Using FDA-approved edible materials, a simple, fast, and low-cost method was proposed to produce coatings with super-hydrophobic properties. The superhydrophobic coating prepared by wax-ethanol hydrothermal spraying showed superhydrophobic properties, and the water contact Angle (WCA) was greater than 150 degrees. In order to improve the hydrophobicity, firmness, flexibility and durability of the coating, polypropylene (PP) was used as binder. This method can be applied to the inner packaging of liquid food in daily life, greatly reducing the residue of liquid food on the packaging.