Synthesis of polyamide-6: Characterization and application to the removal of heavy metals by clays . Indian Journal of Chemical Technology (IJCT), [S. l.], v. 29, n. 4, p. 390–401, 2023. DOI: 10.56042/ijct.v29i4.62002. Disponível em: https://or.niscpr.res.in/index.php/IJCT/article/view/2036. Acesso em: 14 may. 2026.