The Effect of Carbon on Chitosan-ZnO Composites as Fabric Mask Coating Materials. Sainmatika: Jurnal Ilmiah Matematika dan Ilmu Pengetahuan Alam, [S. l.], v. 20, n. 2, p. 140–146, 2023. DOI: 10.31851/sainmatika.v20i2.12651. Disponível em: https://jurnal.univpgri-palembang.ac.id/index.php/sainmatika/article/view/12651. Acesso em: 21 jun. 2026.