University of Waterloo Researchers Develop Sustainable Plant-Based Coating for Paper Cups

Researchers at the University of Waterloo have developed a durable, plant-based coating for beverage cups using cellulose acetate reinforced with cellulose nanocrystals. This innovation aims to replace fossil-fuel-based plastic liners, which often degrade and release microplastics into beverages while complicating the recycling process.

Testing confirmed the all-cellulose coating remains stable under high temperatures and exposure to food oils or solvents. By allowing for the use of thinner paper, the material could reduce manufacturing costs and material waste, offering a sustainable alternative for food packaging beyond coffee cups.

Editor's note: Excellent synthesis of the research findings, technical composition, and potential applications.