Alkaline delignification of tropical hardwoods: a promising approach for materials development
| dc.contributor.affiliation | Maturana Guevara J.C., Grupo de Investigación Materiales con Impacto–MAT&MPAC, Facultad de Ingenierías, Universidad de Medellín UdeMedellín, Medellín, Colombia, Grupo de Investigación Valoración y Aprovechamiento de la Biodiversidad–VALORABIO, Universidad Tecnológica del Chocó UTCH, Quibdó, Colombia | |
| dc.contributor.affiliation | Arroyave Quiceno C., Grupo de Investigaciones y Mediciones Ambientales–GEMA, Department of Environmental Engineering, Universidad de Medellín UdeMedellín, Medellín, Colombia | |
| dc.contributor.affiliation | Hurtado A., Grupo Interdisciplinario de Estudios Moleculares–GIEM, Facultad Ciencias Exactas y Naturales, Universidad de Antioquia UdeA, Medellín, Colombia | |
| dc.contributor.affiliation | Echeverría F., Centro de Investigación, Innovación y Desarrollo de Materiales–CIDEMAT, Facultad de Ingeniería, Universidad de Antioquia UdeA, Medellín, Colombia | |
| dc.contributor.affiliation | Correa E., Grupo de Investigación Materiales con Impacto–MAT&MPAC, Facultad de Ingenierías, Universidad de Medellín UdeMedellín, Medellín, Colombia | |
| dc.contributor.author | Maturana Guevara J.C. | |
| dc.contributor.author | Arroyave Quiceno C. | |
| dc.contributor.author | Hurtado A. | |
| dc.contributor.author | Echeverría F. | |
| dc.contributor.author | Correa E. | |
| dc.date.accessioned | 2025-09-08T14:23:51Z | |
| dc.date.available | 2025-09-08T14:23:51Z | |
| dc.date.issued | 2025 | |
| dc.description | Wood delignification is a promising method, prior to densification, for developing new materials from tropical hardwoods. This study investigated the uniformity and efficiency of partial alkaline delignification of three commercially important tropical hardwoods (Andiroba, Sande, and Choiba) using a mixed aqueous solution of sodium hydroxide and sodium sulfite as a pretreatment for densification. The effects and distribution of the solution under the influence of the anatomical features of each hardwood were analyzed using FT-IR, OM, and SEM. The process resulted in the partial removal of lignin and hemicellulose in varying proportions between the center and ends of the wood. This reduction in lignin and hemicellulose content led to a decrease in modulus of elasticity (MOE), modulus of rupture (MOR), and hardness (about 34% in all three species) of the delignified wood (DW). Additionally, the results suggest that sodium accumulation (about 2% in all three species) in the wood structure may also modify its mechanical properties. The relationship between the chemical treatment and the anatomical characteristics of the wood species was found to influence delignification, which in turn affected the effectiveness of densification and subsequent compression. The findings of this study suggest that alkaline delignification is a promising approach for developing new materials from tropical hardwoods, but further research is needed to optimize the process and minimize the negative impact on mechanical properties. © 2025 Taylor & Francis Group, LLC. | |
| dc.identifier.doi | 10.1080/00986445.2025.2482167 | |
| dc.identifier.instname | instname:Universidad de Medellín | spa |
| dc.identifier.issn | 986445 | |
| dc.identifier.reponame | reponame:Repositorio Institucional Universidad de Medellín | spa |
| dc.identifier.repourl | repourl:https://repository.udem.edu.co/ | |
| dc.identifier.uri | https://hdl.handle.net/11407/9118 | |
| dc.language.iso | eng | |
| dc.publisher.faculty | Facultad de Ingenierías | spa |
| dc.publisher.program | Ingeniería en Energía | spa |
| dc.relation.isversionof | https://www.scopus.com/inward/record.uri?eid=2-s2.0-105002018040&doi=10.1080%2f00986445.2025.2482167&partnerID=40&md5=5f206117487d36a2849a2e9f1a8ab9cf | |
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| dc.rights.acceso | Restricted access | |
| dc.rights.accessrights | info:eu-repo/semantics/restrictedAccess | |
| dc.source | Chemical Engineering Communications | |
| dc.source | Chem. Eng. Commun. | |
| dc.source | Scopus | |
| dc.subject | Anatomical structure | |
| dc.subject | partial delignification | |
| dc.subject | tropical hardwoods | |
| dc.subject | wood chemistry | |
| dc.subject | wood modification | |
| dc.subject | Alkalinity | |
| dc.subject | Biogeochemistry | |
| dc.subject | Delignification | |
| dc.subject | Hardwoods | |
| dc.subject | Wood chemicals | |
| dc.subject | Alkalines | |
| dc.subject | Anatomical structures | |
| dc.subject | Densifications | |
| dc.subject | Material development | |
| dc.subject | Mechanical | |
| dc.subject | Partial delignification | |
| dc.subject | Property | |
| dc.subject | Tropical hardwood | |
| dc.subject | Wood chemistry | |
| dc.subject | Wood modification | |
| dc.subject | Sodium sulfite | |
| dc.title | Alkaline delignification of tropical hardwoods: a promising approach for materials development | |
| dc.type | Article | |
| dc.type.local | Artículo | spa |
| dc.type.version | info:eu-repo/semantics/publishedVersion |
