Technological watch

Nano engineered eggshell flexible biopolymer blend and methods of making biopolymer blend film and using such bioplastic blends for improved biodegradable applications

A biopolymer blend is provided that comprises a combination of three components: poly (butylene adipate-co-terephthalate) (PBAT); agriculture sourced polylactic acid (PLA); and engineered proteinaceous eggshell nanoparticles. The two polymer components can be present in any ratio but an approximate 70:30 ratio is preferred. The engineered proteinaceous eggshell nanoparticles are preferably about 10-25 nanometers. Also provided are methods of preparing biopolymer film and packaging components. Pelleted poly (butylene adipate-co-terephthalate) and agriculture sourced polylactic acid (PLA) are dissolved in chloroform and mixed together to form a polymer blend, and engineered proteinaceous eggshell nanoparticles are incorporated into the polymer blend, which is then extruded to create a biopolymer film or component.

Publication date: 28/03/2023

Number: US11613648B1 (B1)



Espacenet (LATIPAT)


This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 870292.