DEVELOPMENT AND CHARACTERIZATION OF 3D PRINTING FILAMENT DERIVED FROM RECYCLED PET BOTTLES. International Journal of Mechanical Engineering Research and Technology , [S. l.], v. 18, n. 4, p. 77–88, 2026. Disponível em: https://ijmert.com/index.php/ijmert/article/view/300. Acesso em: 10 oct. 2026.