Please use this identifier to cite or link to this item: http://hdl.handle.net/10316/96446
DC FieldValueLanguage
dc.contributor.authorCosta, Carolina-
dc.contributor.authorMedronho, Bruno-
dc.contributor.authorEivazi, Alireza-
dc.contributor.authorSvanedal, Ida-
dc.contributor.authorLindman, Björn-
dc.contributor.authorEdlund, Håkan-
dc.contributor.authorNorgren, Magnus-
dc.date.accessioned2021-11-19T16:32:55Z-
dc.date.available2021-11-19T16:32:55Z-
dc.date.issued2021-11-15-
dc.identifier.issn01448617pt
dc.identifier.urihttp://hdl.handle.net/10316/96446-
dc.description.abstractAqueous sodium hydroxide solutions are extensively used as solvents for lignin in kraft pulping. These are also appealing systems for cellulose dissolution due to their inexpensiveness, ease to recycle and low toxicity. Cellulose dissolution occurs in a narrow concentration region and at low temperatures. Dissolution is often incomplete but additives, such as zinc oxide or urea, have been found to significantly improve cellulose dissolution. In this work, lignin was explored as a possible beneficial additive for cellulose dissolution. Lignin was found to improve cellulose dissolution in cold alkali, extending the NaOH concentration range to lower values. The regenerated cellulose material from the NaOH-lignin solvents was found to have a lower crystallinity and crystallite size than the samples prepared in the neat NaOH and NaOH-urea solvents. Beneficial lignin-cellulose interactions in solution state appear to be preserved under coagulation and regeneration, reducing the tendency of crystallization of cellulose.pt
dc.language.isoengpt
dc.relationCEECIND/01014/2018pt
dc.relationUID/QUI/00313/2020pt
dc.relationinfo:eu-repo/grantAgreement/FCT/PTDC/ASP-SIL/30619/2017pt
dc.relationinfo:eu-repo/grantAgreement/FCT/UIDB/05183/2020pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectCellulose amphiphilicitypt
dc.subjectDissolutionpt
dc.subjectLigninpt
dc.subjectNaOH (aq.) solventpt
dc.titleLignin enhances cellulose dissolution in cold alkalipt
dc.typearticle-
degois.publication.firstPage118661pt
degois.publication.titleCarbohydrate Polymerspt
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/pii/S0144861721010481pt
dc.peerreviewedyespt
dc.identifier.doi10.1016/j.carbpol.2021.118661pt
degois.publication.volume274pt
dc.date.embargo2021-11-15*
uc.date.periodoEmbargo0pt
item.languageiso639-1en-
item.fulltextCom Texto completo-
item.grantfulltextopen-
crisitem.author.deptFaculty of Sciences and Technology-
crisitem.author.parentdeptUniversity of Coimbra-
crisitem.author.researchunitCQC - Coimbra Chemistry Centre-
crisitem.author.parentresearchunitFaculty of Sciences and Technology-
crisitem.author.orcid0000-0003-0972-1739-
crisitem.author.orcid0000-0002-7493-9112-
Appears in Collections:I&D CQC - Artigos em Revistas Internacionais
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