Researchers turn spoiled milk into 3D printing materials — extracted proteins from dairy waste combined with polymers to create plastic alternative

Researchers at the University of Wisconsin–Platteville have developed a method to convert spoiled milk into a bio-composite material for 3D printing. By extracting proteins from dairy waste and blending them with polymers, they have created a sustainable plastic alternative suitable for 3D printers. This innovation not only addresses the issue of plastic waste but also repurposes agricultural liabilities, such as surplus milk from the COVID-era dumping crisis. The project, led by Dr. John Obielodan and Dr. Joseph Wu, demonstrates the potential for bio-derived filament to reduce environmental impact, diversify material supply chains, and offer new revenue streams for dairy producers. This advancement aligns with circular economy principles and signifies a step towards more sustainable additive manufacturing practices.