Tetrahydrofuran-based recycling of furan–lignin foams: comparative characterization of regenerated and virgin foams. Proceedings of the Nigerian Society of Physical Sciences, [S. l.], v. 3, p. 263, 2026. DOI: 10.61298/pnspsc.2026.3.263. Disponível em: https://flayoophl.com/journals/index.php/pnspsc/article/view/263. Acesso em: 3 jun. 2026.