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Lignin enhances cellulose dissolution in cold alkali

2021-11Journal article Open Access
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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.accessioned2021-10-21T12:55:11Z
dc.date.available2021-10-21T12:55:11Z
dc.date.issued2021-11
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_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.carbpol.2021.118661pt_PT
dc.identifier.eissn1879-1344
dc.identifier.urihttp://hdl.handle.net/10400.1/17239
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relation2015-04290pt_PT
dc.relationMediterranean Institute for Agriculture, Environment and Development
dc.relationNot Available
dc.relationCoimbra Chemistry Center
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectCellulose amphiphilicitypt_PT
dc.subjectDissolutionpt_PT
dc.subjectNaOH (aq.) solventpt_PT
dc.subjectLigninpt_PT
dc.titleLignin enhances cellulose dissolution in cold alkalipt_PT
dc.title.alternativeLignina aumenta a dissolução de celulose em álcali friapt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleMediterranean Institute for Agriculture, Environment and Development
oaire.awardTitleNot Available
oaire.awardTitleCoimbra Chemistry Center
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/9471 - RIDTI/PTDC%2FASP-SIL%2F30619%2F2017/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F05183%2F2020/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/CEEC IND 2018/CEECIND%2F01014%2F2018%2FCP1540%2FCT0002/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F00313%2F2020/PT
oaire.citation.startPage118661pt_PT
oaire.citation.titleCarbohydrate Polymerspt_PT
oaire.citation.volume274pt_PT
oaire.fundingStream9471 - RIDTI
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStreamCEEC IND 2018
oaire.fundingStream6817 - DCRRNI ID
person.familyNameMedronho
person.givenNameBruno
person.identifier.ciencia-id6918-9AB3-8D22
person.identifier.orcid0000-0003-0972-1739
person.identifier.ridP-5927-2014
person.identifier.scopus-author-id9940656700
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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