Micro- and Nanofibrillated Cellulose from Annual Plant-Sourced Fibers: Comparison between Enzymatic Hydrolysis and Mechanical Refining
dc.contributor.author
dc.date.accessioned
2022-05-10T09:58:52Z
dc.date.available
2022-05-10T09:58:52Z
dc.date.issued
2022-05-09
dc.identifier.uri
dc.description.abstract
The current trends in micro-/nanofibers offer a new and unmissable chance for the recovery of cellulose from non-woody crops. This work assesses a technically feasible approach for the production of micro- and nanofibrillated cellulose (MNFC) from jute, sisal and hemp, involving refining and enzymatic hydrolysis as pretreatments. Regarding the latter, only slight enhancements of nanofibrillation, transparency and specific surface area were recorded when increasing the dose of endoglucanases from 80 to 240 mg/kg. This supports the idea that highly ordered cellulose structures near the fiber wall are resistant to hydrolysis and hinder the diffusion of glucanases. Mechanical MNFC displayed the highest aspect ratio, up to 228 for hemp. Increasing the number of homogenization cycles increased the apparent viscosity in most cases, up to 0.14 Pa·s at 100 s−1 (1 wt.% consistency). A shear-thinning behavior, more marked for MNFC from jute and sisal, was evidenced in all cases. We conclude that, since both the raw material and the pretreatment play a major role, the unique characteristics of non-woody MNFC, either mechanical or enzymatically pretreated (low dose), make it worth considering for large-scale processes
dc.description.sponsorship
Authors wish to acknowledge the financial support of the Spanish Ministry of Economy and Competitiveness to the project NANOPROSOST (CTQ2017-85654-C2-1-R and CTQ2017-85654-C2-2-R)
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
MDPI (Multidisciplinary Digital Publishing Institute)
dc.relation
CTQ2017-85654-C2-1-R
dc.relation.isformatof
Reproducció digital del document publicat a: https://doi.org/10.3390/nano12091612
dc.relation.ispartof
Nanomaterials, 2022, vol. 12, núm. 9, p.1612
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Articles publicats (D-EQATA)
dc.rights
Attribution 4.0 International
dc.rights.uri
dc.subject
dc.title
Micro- and Nanofibrillated Cellulose from Annual Plant-Sourced Fibers: Comparison between Enzymatic Hydrolysis and Mechanical Refining
dc.type
info:eu-repo/semantics/article
dc.rights.accessRights
info:eu-repo/semantics/openAccess
dc.relation.projectID
info:eu-repo/grantAgreement/AEI/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTQ2017-85654-C2-1-R/ES/PRODUCCION SOSTENIBLE DE NANOCELULOSAS PARA SU APLICACION EN DIFERENTES SECTORES Y PROCESOS INDUSTRIALES/
dc.type.version
info:eu-repo/semantics/publishedVersion
dc.identifier.doi
dc.identifier.idgrec
038171
dc.contributor.funder
dc.type.peerreviewed
peer-reviewed
dc.relation.FundingProgramme
dc.relation.ProjectAcronym
dc.identifier.eissn
2079-4991