Improvement of mechanical properties of polyvinyl alcohol by addition of biomaterial (Okra shell and peel peas) for production of environmentally friendly products. Mesopotamia Environmental Journal (mesop. environ. j) ISSN: 2410-2598, [S. l.], v. 2, n. 4, p. 1–8, 2022. Disponível em: https://mej.uobabylon.edu.iq/index.php/mej/article/view/98. Acesso em: 4 apr. 2025.