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dc.contributor.authorTarrés Farré, Joaquim Agustí
dc.contributor.authorAguado, Roberto
dc.contributor.authorZoppe, Justin Orazio
dc.contributor.authorMutjé Pujol, Pere
dc.contributor.authorFiol Santalo, Núria
dc.contributor.authorDelgado-Aguilar, Marc
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials
dc.date.accessioned2022-12-13T09:07:03Z
dc.date.available2022-12-13T09:07:03Z
dc.date.issued2022-12-02
dc.identifier.citationTarrés, J. [et al.]. Dynamic light scattering plus scanning electron microscopy: usefulness and limitations of a simplified estimation of nanocellulose dimensions. "Nanomaterials", 2 Desembre 2022, vol. 12, núm. 23, article 4288, p. 1-11.
dc.identifier.issn2079-4991
dc.identifier.urihttp://hdl.handle.net/2117/377915
dc.description.abstractMeasurements of nanocellulose size usually demand very high-resolution techniques and tedious image processing, mainly in what pertains to the length of nanofibers. Aiming to ease the process, this work assesses a relatively simple method to estimate the dimensions of nanocellulose particles with an aspect ratio greater than 1. Nanocellulose suspensions, both as nanofibers and as nanocrystals, are subjected to dynamic light scattering (DLS) and to field-emission scanning electron microscopy (FE-SEM). The former provides the hydrodynamic diameter, as long as the scatter angle and the consistency are adequate. Assays with different angles and concentrations compel us to recommend forward scattering (12.8°) and concentrations around 0.05–0.10 wt %. Then, FE-SEM with magnifications of ×5000–×20,000 generally suffices to obtain an acceptable approximation for the actual diameter, at least for bundles. Finally, length can be estimated by a simple geometric relationship. Regardless of whether they are collected from FE-SEM or DLS, size distributions are generally skewed to lower diameters. Width distributions from FE-SEM, in particular, are well fitted to log-normal functions. Overall, while this method is not valid for the thinnest fibrils or for single, small nanocrystals, it can be useful in lieu of very high-resolution techniques.
dc.format.extent11 p.
dc.language.isoeng
dc.rightsAttribution 4.0 International
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectÀrees temàtiques de la UPC::Enginyeria dels materials
dc.subject.lcshCellulose fibers
dc.subject.lcshCellulose nanocrystals
dc.subject.lcshScanning electron microscopy
dc.subject.otherCellulose nanocrystals
dc.subject.otherCellulose nanofibers
dc.subject.otherDynamic light scattering
dc.subject.otherHydrodynamic diameter
dc.subject.otherNanocellulose
dc.subject.otherScanning electron microscopy
dc.titleDynamic light scattering plus scanning electron microscopy: usefulness and limitations of a simplified estimation of nanocellulose dimensions
dc.typeArticle
dc.subject.lemacFibres de cel·lulosa
dc.subject.lemacNanocristalls
dc.subject.lemacMicroscòpia electrònica d'escombratge
dc.contributor.groupUniversitat Politècnica de Catalunya. POLY2 - Polyfunctional polymeric materials
dc.identifier.doi10.3390/nano12234288
dc.description.peerreviewedPeer Reviewed
dc.relation.publisherversionhttps://www.mdpi.com/2079-4991/12/23/4288
dc.rights.accessOpen Access
local.identifier.drac34927746
dc.description.versionPostprint (published version)
local.citation.authorTarrés, J.; Aguado, R.; Zoppe, J.; Mutjé, P.; Fiol, N.; Delgado-Aguilar, M.
local.citation.publicationNameNanomaterials
local.citation.volume12
local.citation.number23, article 4288
local.citation.startingPage1
local.citation.endingPage11


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