Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibersShow others and affiliations
2020 (English)In: International Journal of Biological Macromolecules, ISSN 0141-8130, E-ISSN 1879-0003, Vol. 143, p. 453-461Article in journal (Refereed) Published
Abstract [en]
This work aimed to study the influence of the initial chemical composition (glucans, lignin, xylan, and mannans), intrinsic viscosity, and carboxylate groups of pulps on the production process and final properties of lignocellulosic nanofibers (LCNF). Pulps of pine sawdust, eucalyptus sawdust, and sugarcane bagasse subjected to conventional pulping and highly oxidized processes were the starting materials. The LCNF were obtained by TEMPO mediated oxidation and mechanical fibrillation with a colloidal grinder. The nanofibrillation degree, chemical charge content, rheology, laser profilometry, cristallinity and atomic force microscopy were used to characterize the LCNF. The carboxylate groups, hemicelluloses and lignin of the initial pulps were important factors that affected the production process of LCNF. The results revealed that intrinsic viscosity and carboxylate groups of the initial pulps affected LCNF production process, whereas lignin and hemicelluloses influenced the viscosity of LCNF aqueous suspensions, the roughness of LCNF films, and the carboxylate groups content of LCNF
Place, publisher, year, edition, pages
Elsevier B.V. , 2020. Vol. 143, p. 453-461
Keywords [en]
Lignocellulosic nanofibers, Pine and eucalyptus sawdust, Sugarcane bagasse, carboxylic acid, glucan, hemicellulose, lignin, lignocellulose, mannan, nanofiber, xylan, aqueous solution, Article, atomic force spectroscopy, chemical analysis, chemical charge content, chemical composition, chemical parameters, chemical procedures, chemical structure, colloid, concentration (parameter), controlled study, crystal structure, crystallinity, Eucalyptus, flow kinetics, laser profilometry, mechanical fibrillation, nonhuman, oxidation, sawdust, sugarcane, viscosity
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-43409DOI: 10.1016/j.ijbiomac.2019.10.165Scopus ID: 2-s2.0-85076275979OAI: oai:DiVA.org:ri-43409DiVA, id: diva2:1390298
Note
Funding details: Universidade de Coimbra, UC; Funding details: SFRH/BDE/108095/2015; Funding details: Consejo Nacional de Investigaciones Científicas y Técnicas, CONICET; Funding details: Norges Forskningsråd, 271054; Funding details: CYTED Ciencia y Tecnología para el Desarrollo, CYTED, ELAC2015/T03-0715; Funding text 1: The authors acknowledge the National Scientific and Technical Research Council (CONICET, Argentina), the National University of Misiones (Argentina), the University of Coimbra (Portugal), FCT for SFRH/BDE/108095/2015 grant, CYTED -NANOCELIA network, and the ValBio-3D project Grant ELAC2015/T03-0715 ( Ministry of Science, Technology and Innovation Production of Argentina, and Research Council of Norway , Grant no. 271054 ). Appendix A
2020-01-312020-01-312025-09-23Bibliographically approved