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

2013Journal article Open access
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dc.contributor.authorKihlman, Martin
dc.contributor.authorMedronho, B.
dc.contributor.authorRomano, Anabela
dc.contributor.authorGermgard, Ulf
dc.contributor.authorLindman, B.
dc.date.accessioned2015-06-18T10:12:39Z
dc.date.available2015-06-18T10:12:39Z
dc.date.issued2013
dc.description.abstractThe 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.
dc.description.abstractA 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.
dc.identifier.doihttps://dx.doi.org/10.5935/0103-5053.20130038
dc.identifier.issn0103-5053
dc.identifier.otherAUT: ARO01015;
dc.identifier.urihttp://hdl.handle.net/10400.1/6446
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSociedade Brasileira de Química
dc.relation.isbasedonP-005-327
dc.subjectCellulose dissolution
dc.subjectHydrophobic effect
dc.subjectSodium hydroxide
dc.subjectPretreatment amphiphiles
dc.titleCellulose dissolution in an alkali based solvent: influence of additives and pretreatments
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage303
oaire.citation.issue2
oaire.citation.startPage295
oaire.citation.titleJournal of the Brazilian Chemical Society
oaire.citation.volume24
person.familyNameMedronho
person.familyNameRomano
person.givenNameBruno
person.givenNameAnabela
person.identifier.ciencia-id6918-9AB3-8D22
person.identifier.ciencia-id8A18-7E9A-3B0E
person.identifier.orcid0000-0003-0972-1739
person.identifier.orcid0000-0002-7204-7428
person.identifier.ridP-5927-2014
person.identifier.scopus-author-id9940656700
person.identifier.scopus-author-id56249997600
rcaap.rightsopenAccess
rcaap.typearticle
relation.isAuthorOfPublication4c03571a-93da-4504-8acf-c74326449852
relation.isAuthorOfPublicatione3343b60-17d3-4f5e-a2bf-06f26da69206
relation.isAuthorOfPublication.latestForDiscovery4c03571a-93da-4504-8acf-c74326449852

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