Organic gelatin-coated ZnNPs for the production of biodegradable biopolymer films.

Petroleum-based polymers have raised significant environmental concerns. It is critical to create compostable, good biocompatibility, and nontoxic polymers to replace petroleum-based polymers. Thus, this research was performed to extract the gelatin from fish waste cartilage and coated it over the surface of spherical shaped pre-synthesized ZnNPs along with a suitable plasticizer to produce the biodegradable film. The presence of gelatin on the surface of ZnNPs was first confirmed using UV–visible spectrophotometers, as well as the characteristic functional groups involved in the coating were investigated using Fourier-Transform Infrared Spectroscopy (FTIR). The morphological appearance of gelatin coated ZnNPs was ranged from 41.43 to 52.31 nm, the shape was found as platonic to pentagonal shape, and the fabricated film was observed through Scanning Electron Microscope (SEM). The thickness, density, and tensile strength of fabricated film were found to be 0.04–0.10 mm, 0.10–0.27 g/cm3, and 31.7 kPa. These results imply that the fish waste cartilage gelatin coated ZnNPs-based nanocomposite can be used for film preparation as well as a wrapper for food and pharmaceutical packaging. • Gelatin has been harvested successfully from fish waste cartilage. • The gelatin effectively coated the ZnNPs, resulting in the formation of a nanocomposite. • The size of the gelatin coated ZnNPs was found as 41.43–52.31 nm & platonic shape. • Thickness & density of the fabricated film were found as 0.10 mm & 0.27 g/cm3. • The tensile strength of the gelatin-coated ZnNPs-based biodegradable film was 31.7 kPa. [ABSTRACT FROM AUTHOR]