Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments

Detalhes bibliográficos
Autor(a) principal: Kihlman, Martin
Data de Publicação: 2013
Outros Autores: Medronho, B., Romano, Anabela, Germgard, Ulf, Lindman, B.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.1/6446
Resumo: The distinction between thermodynamic and kinetics in cellulose dissolution is seldom considered in the literature. Therefore, herein an attempt to discuss this topic and illustrate our hypotheses on the basis of simple experiments was made. It is well-known that cellulose can be dissolved in a aqueous sodium hydroxide (NaOH/H2O) solvent at low temperature but it is here shown that such an alkaline solvent can be considerably improved regarding solubility, stability and rheological properties as a whole if different additives (salts and amphiphilic molecules) are used in the dissolution stage. This work probes new aqueous routes to dissolve cellulose, thereby improving the potential to commercially dissolve cellulose in an inexpensive and environmentally friendly manner.
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spelling Cellulose dissolution in an alkali based solvent: influence of additives and pretreatmentsCellulose dissolutionHydrophobic effectSodium hydroxidePretreatment amphiphilesThe distinction between thermodynamic and kinetics in cellulose dissolution is seldom considered in the literature. Therefore, herein an attempt to discuss this topic and illustrate our hypotheses on the basis of simple experiments was made. It is well-known that cellulose can be dissolved in a aqueous sodium hydroxide (NaOH/H2O) solvent at low temperature but it is here shown that such an alkaline solvent can be considerably improved regarding solubility, stability and rheological properties as a whole if different additives (salts and amphiphilic molecules) are used in the dissolution stage. This work probes new aqueous routes to dissolve cellulose, thereby improving the potential to commercially dissolve cellulose in an inexpensive and environmentally friendly manner.A distinção entre termodinâmica e cinética de dissolução da celulose raramente tem sido considerada na literatura. Neste trabalho, discutimos este tema e fundamentamos as nossas hipóteses recorrendo a experiências simples. É do conhecimento geral que a celulose pode ser dissolvida no solvente aquoso de hidróxido de sódio (NaOH/H2O) a baixa temperatura. Neste trabalho, demonstramos que este solvente alcalino pode ser consideravelmente melhorado em relação à sua estabilidade, solubilidade e propriedades reológicas se forem usados diferentes aditivos (sais e moléculas anfifílicas) na fase de dissolução. Este trabalho indica novos caminhos relativamente à dissolução da celulose em solventes aquosos, de uma forma mais econômica e ambientalmente amigável, aumentando o seu potencial comercial.Sociedade Brasileira de QuímicaSapientiaKihlman, MartinMedronho, B.Romano, AnabelaGermgard, UlfLindman, B.2015-06-18T10:12:39Z20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.1/6446eng0103-5053AUT: ARO01015;https://dx.doi.org/10.5935/0103-5053.20130038info: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:RCAAP2023-07-24T10:17:37Zoai:sapientia.ualg.pt:10400.1/6446Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:59:09.630635Repositório 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 Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
title Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
spellingShingle Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
Kihlman, Martin
Cellulose dissolution
Hydrophobic effect
Sodium hydroxide
Pretreatment amphiphiles
title_short Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
title_full Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
title_fullStr Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
title_full_unstemmed Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
title_sort Cellulose dissolution in an alkali based solvent: influence of additives and pretreatments
author Kihlman, Martin
author_facet Kihlman, Martin
Medronho, B.
Romano, Anabela
Germgard, Ulf
Lindman, B.
author_role author
author2 Medronho, B.
Romano, Anabela
Germgard, Ulf
Lindman, B.
author2_role author
author
author
author
dc.contributor.none.fl_str_mv Sapientia
dc.contributor.author.fl_str_mv Kihlman, Martin
Medronho, B.
Romano, Anabela
Germgard, Ulf
Lindman, B.
dc.subject.por.fl_str_mv Cellulose dissolution
Hydrophobic effect
Sodium hydroxide
Pretreatment amphiphiles
topic Cellulose dissolution
Hydrophobic effect
Sodium hydroxide
Pretreatment amphiphiles
description The distinction between thermodynamic and kinetics in cellulose dissolution is seldom considered in the literature. Therefore, herein an attempt to discuss this topic and illustrate our hypotheses on the basis of simple experiments was made. It is well-known that cellulose can be dissolved in a aqueous sodium hydroxide (NaOH/H2O) solvent at low temperature but it is here shown that such an alkaline solvent can be considerably improved regarding solubility, stability and rheological properties as a whole if different additives (salts and amphiphilic molecules) are used in the dissolution stage. This work probes new aqueous routes to dissolve cellulose, thereby improving the potential to commercially dissolve cellulose in an inexpensive and environmentally friendly manner.
publishDate 2013
dc.date.none.fl_str_mv 2013
2013-01-01T00:00:00Z
2015-06-18T10:12:39Z
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/10400.1/6446
url http://hdl.handle.net/10400.1/6446
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 0103-5053
AUT: ARO01015;
https://dx.doi.org/10.5935/0103-5053.20130038
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
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
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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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
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