DE SOUZA, Altamiro Xavier et al. Polysulfone with Different Degrees of Sulfonation: Simple Method with Acetyl Sulfate . Orbital: The Electronic Journal of Chemistry, [S. l.], v. 16, n. 1, p. 41–49, 2024. DOI: 10.17807/orbital.v15i5.19865. Disponível em: https://periodicos.ufms.br/index.php/orbital/article/view/19865. Acesso em: 1 feb. 2026.