Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System

Autores
Delgado, Juan Francisco; Salvay, Andrés Gerardo; Arroyo, Silvana Maricel; Bernal, Celina Raquel; Foresti, María Laura
Año de publicación
2023
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Innovative and sustainable all-cellulose composites (ACCs) can be obtained by partial dissolution of cellulosic fibers and regeneration of the dissolved fraction. Among cellulose solvents, sodium hydroxide/urea solutions are recognized as promising low-environmental impact systems. In this work, filter paper (FP) was dissolved with a 7 wt% NaOH/12 wt% urea aqueous solution, kept at −18 °C for different time intervals, regenerated with distilled water and finally dried under different conditions. The developed films were characterized in terms of morphology, porosity, optical properties, crystalline structure, hydration and mechanical properties. The porosity of the composites decreased with dissolution time due to the progressive filling of voids as the cellulosic fibers’ surface skin layer was dissolved and regenerated. Samples treated for 4 h showed the minimum values of porosity and opacity, high hydration and a substantial change from cellulose I to cellulose II. Hot pressing during drying led to relevant improvements in ACCs stiffness and strength values.
Fil: Delgado, Juan Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina
Fil: Salvay, Andrés Gerardo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina
Fil: Arroyo, Silvana Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Fil: Bernal, Celina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina
Fil: Foresti, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina
Materia
ALL-CELLULOSE COMPOSITES
DISSOLUTION TIME
FILTER PAPER
NAOH/UREA SOLVENT SYSTEM
PARTIAL DISSOLUTION METHOD
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/227751
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/227751
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent SystemDelgado, Juan FranciscoSalvay, Andrés GerardoArroyo, Silvana MaricelBernal, Celina RaquelForesti, María LauraALL-CELLULOSE COMPOSITESDISSOLUTION TIMEFILTER PAPERNAOH/UREA SOLVENT SYSTEMPARTIAL DISSOLUTION METHODhttps://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.4https://purl.org/becyt/ford/2https://purl.org/becyt/ford/2.9https://purl.org/becyt/ford/2Innovative and sustainable all-cellulose composites (ACCs) can be obtained by partial dissolution of cellulosic fibers and regeneration of the dissolved fraction. Among cellulose solvents, sodium hydroxide/urea solutions are recognized as promising low-environmental impact systems. In this work, filter paper (FP) was dissolved with a 7 wt% NaOH/12 wt% urea aqueous solution, kept at −18 °C for different time intervals, regenerated with distilled water and finally dried under different conditions. The developed films were characterized in terms of morphology, porosity, optical properties, crystalline structure, hydration and mechanical properties. The porosity of the composites decreased with dissolution time due to the progressive filling of voids as the cellulosic fibers’ surface skin layer was dissolved and regenerated. Samples treated for 4 h showed the minimum values of porosity and opacity, high hydration and a substantial change from cellulose I to cellulose II. Hot pressing during drying led to relevant improvements in ACCs stiffness and strength values.Fil: Delgado, Juan Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; ArgentinaFil: Salvay, Andrés Gerardo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; ArgentinaFil: Arroyo, Silvana Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; ArgentinaFil: Bernal, Celina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; ArgentinaFil: Foresti, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; ArgentinaMDPI2023-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/227751Delgado, Juan Francisco; Salvay, Andrés Gerardo; Arroyo, Silvana Maricel; Bernal, Celina Raquel; Foresti, María Laura; Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System; MDPI; Polysaccharides; 4; 1; 2-2023; 65-772673-4176CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2673-4176/4/1/5info:eu-repo/semantics/altIdentifier/doi/10.3390/polysaccharides4010005info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T12:11:44Zoai:ri.conicet.gov.ar:11336/227751instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 12:11:44.748CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
title Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
spellingShingle Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
Delgado, Juan Francisco
ALL-CELLULOSE COMPOSITES
DISSOLUTION TIME
FILTER PAPER
NAOH/UREA SOLVENT SYSTEM
PARTIAL DISSOLUTION METHOD
title_short Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
title_full Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
title_fullStr Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
title_full_unstemmed Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
title_sort Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System
dc.creator.none.fl_str_mv Delgado, Juan Francisco
Salvay, Andrés Gerardo
Arroyo, Silvana Maricel
Bernal, Celina Raquel
Foresti, María Laura
author Delgado, Juan Francisco
author_facet Delgado, Juan Francisco
Salvay, Andrés Gerardo
Arroyo, Silvana Maricel
Bernal, Celina Raquel
Foresti, María Laura
author_role author
author2 Salvay, Andrés Gerardo
Arroyo, Silvana Maricel
Bernal, Celina Raquel
Foresti, María Laura
author2_role author
author
author
author
dc.subject.none.fl_str_mv ALL-CELLULOSE COMPOSITES
DISSOLUTION TIME
FILTER PAPER
NAOH/UREA SOLVENT SYSTEM
PARTIAL DISSOLUTION METHOD
topic ALL-CELLULOSE COMPOSITES
DISSOLUTION TIME
FILTER PAPER
NAOH/UREA SOLVENT SYSTEM
PARTIAL DISSOLUTION METHOD
purl_subject.fl_str_mv https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.4
https://purl.org/becyt/ford/2
https://purl.org/becyt/ford/2.9
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv Innovative and sustainable all-cellulose composites (ACCs) can be obtained by partial dissolution of cellulosic fibers and regeneration of the dissolved fraction. Among cellulose solvents, sodium hydroxide/urea solutions are recognized as promising low-environmental impact systems. In this work, filter paper (FP) was dissolved with a 7 wt% NaOH/12 wt% urea aqueous solution, kept at −18 °C for different time intervals, regenerated with distilled water and finally dried under different conditions. The developed films were characterized in terms of morphology, porosity, optical properties, crystalline structure, hydration and mechanical properties. The porosity of the composites decreased with dissolution time due to the progressive filling of voids as the cellulosic fibers’ surface skin layer was dissolved and regenerated. Samples treated for 4 h showed the minimum values of porosity and opacity, high hydration and a substantial change from cellulose I to cellulose II. Hot pressing during drying led to relevant improvements in ACCs stiffness and strength values.
Fil: Delgado, Juan Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina
Fil: Salvay, Andrés Gerardo. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología; Argentina
Fil: Arroyo, Silvana Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long". Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnologías y Ciencias de la Ingeniería "Hilario Fernández Long"; Argentina
Fil: Bernal, Celina Raquel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina
Fil: Foresti, María Laura. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Tecnología en Polímeros y Nanotecnología. Universidad de Buenos Aires. Facultad de Ingeniería. Instituto de Tecnología en Polímeros y Nanotecnología; Argentina
description Innovative and sustainable all-cellulose composites (ACCs) can be obtained by partial dissolution of cellulosic fibers and regeneration of the dissolved fraction. Among cellulose solvents, sodium hydroxide/urea solutions are recognized as promising low-environmental impact systems. In this work, filter paper (FP) was dissolved with a 7 wt% NaOH/12 wt% urea aqueous solution, kept at −18 °C for different time intervals, regenerated with distilled water and finally dried under different conditions. The developed films were characterized in terms of morphology, porosity, optical properties, crystalline structure, hydration and mechanical properties. The porosity of the composites decreased with dissolution time due to the progressive filling of voids as the cellulosic fibers’ surface skin layer was dissolved and regenerated. Samples treated for 4 h showed the minimum values of porosity and opacity, high hydration and a substantial change from cellulose I to cellulose II. Hot pressing during drying led to relevant improvements in ACCs stiffness and strength values.
publishDate 2023
dc.date.none.fl_str_mv 2023-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/227751
Delgado, Juan Francisco; Salvay, Andrés Gerardo; Arroyo, Silvana Maricel; Bernal, Celina Raquel; Foresti, María Laura; Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System; MDPI; Polysaccharides; 4; 1; 2-2023; 65-77
2673-4176
CONICET Digital
CONICET
url http://hdl.handle.net/11336/227751
identifier_str_mv Delgado, Juan Francisco; Salvay, Andrés Gerardo; Arroyo, Silvana Maricel; Bernal, Celina Raquel; Foresti, María Laura; Effect of Dissolution Time on the Development of All-Cellulose Composites Using the NaOH/Urea Solvent System; MDPI; Polysaccharides; 4; 1; 2-2023; 65-77
2673-4176
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.mdpi.com/2673-4176/4/1/5
info:eu-repo/semantics/altIdentifier/doi/10.3390/polysaccharides4010005
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv MDPI
publisher.none.fl_str_mv MDPI
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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