Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers
Autor(a) principal: | |
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Data de Publicação: | 2020 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/88902 https://doi.org/10.1016/j.ijbiomac.2019.10.165 |
Resumo: | 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. |
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Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibersLignocellulosic nanofibers; Pine and eucalyptus sawdust; Sugarcane bagasseThis 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.2020-01-15info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/88902http://hdl.handle.net/10316/88902https://doi.org/10.1016/j.ijbiomac.2019.10.165por01418130Ehman, N VLourenço, A. F.McDonagh, B HVallejos, M. E.Felissia, F.E.Ferreira, Paulo Jorge TavaresChinga-Carrasco, G.Area, M. C.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-05-25T03:34:17Zoai:estudogeral.uc.pt:10316/88902Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T21:09:20.841130Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers |
title |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers |
spellingShingle |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers Ehman, N V Lignocellulosic nanofibers; Pine and eucalyptus sawdust; Sugarcane bagasse |
title_short |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers |
title_full |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers |
title_fullStr |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers |
title_full_unstemmed |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers |
title_sort |
Influence of initial chemical composition and characteristics of pulps on the production and properties of lignocellulosic nanofibers |
author |
Ehman, N V |
author_facet |
Ehman, N V Lourenço, A. F. McDonagh, B H Vallejos, M. E. Felissia, F.E. Ferreira, Paulo Jorge Tavares Chinga-Carrasco, G. Area, M. C. |
author_role |
author |
author2 |
Lourenço, A. F. McDonagh, B H Vallejos, M. E. Felissia, F.E. Ferreira, Paulo Jorge Tavares Chinga-Carrasco, G. Area, M. C. |
author2_role |
author author author author author author author |
dc.contributor.author.fl_str_mv |
Ehman, N V Lourenço, A. F. McDonagh, B H Vallejos, M. E. Felissia, F.E. Ferreira, Paulo Jorge Tavares Chinga-Carrasco, G. Area, M. C. |
dc.subject.por.fl_str_mv |
Lignocellulosic nanofibers; Pine and eucalyptus sawdust; Sugarcane bagasse |
topic |
Lignocellulosic nanofibers; Pine and eucalyptus sawdust; Sugarcane bagasse |
description |
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. |
publishDate |
2020 |
dc.date.none.fl_str_mv |
2020-01-15 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/88902 http://hdl.handle.net/10316/88902 https://doi.org/10.1016/j.ijbiomac.2019.10.165 |
url |
http://hdl.handle.net/10316/88902 https://doi.org/10.1016/j.ijbiomac.2019.10.165 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
01418130 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133987424174080 |