Hoang Ngoc Cuong, Vo Le Minh Vien and Nguyen Van Hoa 2026. Biodegradable Chitosan–Casein Films Derived From Dairy Waste for Sustainable Applications: Online First: 12/05/2026. Journal of Technical Education Science. (May 2026). DOI:https://doi.org/10.54644/jte.2026.2083.