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Direct Production of Cellulose Nanocrystals from Old Newspapers and Recycled Newsprints

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dc.contributor.authorCampano Tiedra, Cristina
dc.contributor.authorMiranda Carreño, Rubén
dc.contributor.authorMerayo, Noemí
dc.contributor.authorNegro Álvarez, Carlos Manuel
dc.contributor.authorBlanco Suárez, María Ángeles
dc.date.accessioned2023-06-17T21:56:56Z
dc.date.available2023-06-17T21:56:56Z
dc.date.issued2017
dc.description.abstractCellulose nanocrystals (CNC) are high added value products which can be used in many applications. In this research, CNC were directly produced from two recycled papers: old newspapers (ONP) and 100% recycled newsprint (NP). CNC were also obtained from NP by previously isolating the cellulose particles by alkali and bleaching treatments. CNC yield and quality was assessed through lignin and ash determination, X-ray diffraction analysis, atomic force microscopy and thermogravimetric analysis. Not only crystallinities resulted similar (92-95%), but also aspect ratios (L/d) (each in the range of 50-120). However, different CNC purities and hydrolysis and process yields were obtained. Thus, CNC purity decreased from 93 to 77%, hydrolysis yield was reduced from 64 to 58% but process yield strongly improved from 35 to 60% when no pretreatment was used. Therefore, this study proves the viability of the direct production of CNC from recycled papers.
dc.description.departmentDepto. de Ingeniería Química y de Materiales
dc.description.facultyFac. de Ciencias Químicas
dc.description.refereedTRUE
dc.description.sponsorshipMinisterio de Economía y Competitividad (España)
dc.description.statusinpress
dc.eprint.idhttps://eprints.ucm.es/id/eprint/42998
dc.identifier.citationCampano, Cristina, et al. «Direct Production of Cellulose Nanocrystals from Old Newspapers and Recycled Newsprint». Carbohydrate Polymers, vol. 173, octubre de 2017, pp. 489-96. DOI.org (Crossref), https://doi.org/10.1016/j.carbpol.2017.05.073.
dc.identifier.doi10.1016/j.carbpol.2017.05.073
dc.identifier.issn0144-8617
dc.identifier.officialurlhttps://doi.org/10.1016/j.carbpol.2017.05.073.
dc.identifier.urihttps://hdl.handle.net/20.500.14352/17833
dc.journal.titleCarbohydrate Polymers
dc.language.isoeng
dc.publisherElsevier
dc.relation.hasversionAM
dc.relation.projectID(CTQ2013- 48090-C2-1-R)
dc.relation.projectID(BES-2014-068177)
dc.rights.accessRightsopen access
dc.subject.cdu66.0
dc.subject.keywordCellulose nanocrystals
dc.subject.keywordNewsprint
dc.subject.keywordRecycled paper
dc.subject.keywordProcess yield
dc.subject.keywordAlkali and bleaching pretreatments
dc.subject.keywordOld newspaper
dc.subject.ucmIndustria del papel
dc.subject.ucmIngeniería química
dc.subject.ucmMedio ambiente
dc.subject.unesco3312.13 Tecnología de la Madera
dc.subject.unesco3303 Ingeniería y Tecnología Químicas
dc.subject.unesco2391 Química Ambiental
dc.titleDirect Production of Cellulose Nanocrystals from Old Newspapers and Recycled Newsprints
dc.typejournal article
dspace.entity.typePublication
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relation.isAuthorOfPublication75f551fb-7e58-4699-b2da-57c2e326b03c
relation.isAuthorOfPublication70170cd9-21de-4871-a7fe-b2ad29053b15
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relation.isAuthorOfPublication.latestForDiscoverybdaaafb4-cb70-4eec-813b-11e6774d431b

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