Accounting for Substrate Interactions in the Measurement of the Dimensions of Cellulose Nanofibrils

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dc.contributorAalto-yliopistofi
dc.contributorAalto Universityen
dc.contributor.authorMattos, Bruno D.en_US
dc.contributor.authorTardy, Blaise L.en_US
dc.contributor.authorRojas, Orlando J.en_US
dc.contributor.departmentDepartment of Bioproducts and Biosystemsen
dc.contributor.groupauthorBio-based Colloids and Materialsen
dc.date.accessioned2019-07-30T07:22:01Z
dc.date.available2019-07-30T07:22:01Z
dc.date.issued2019-07en_US
dc.description| openaire: EC/H2020/788489/EU//BioELCell
dc.description.abstractMechanically fibrillated cellulose nanofibrils (CNFs) have attracted special attention as building blocks for the development of advanced materials and composites. A correlation exists between CNF morphology and the properties of the materials they form. However, this correlation is often evaluated indirectly by process-centered approaches or by accessing a single dimensionality of CNFs adsorbed on solid supports. High-resolution imaging is currently the best approach to describe the morphological features of nanocelluloses; nevertheless, adsorption effects need to be accounted for. For instance, possible deformations of the CNFs arising from capillary forces and interactions with the substrate need to be considered in the determination of their cross-sectional dimensions. By considering soft matter imaging and adsorption effects, we provide evidence of the deformation of CNFs upon casting and drying. We determine a substantial flattening associated with the affinity of CNFs with the substrate corresponding to a highly anisotropic cross-sectional geometry (ellipsoidal) in the dried state. Negative-contrast scanning electron microscopy is also introduced as a new method to assess the dimensions of the CNFs. The images obtained by the latter, a faster imaging method, were correlated with those from atomic force microscopy. The cross-sectional area of the CNF is reconstructed by cross-correlating the widths and heights obtained by the two techniques.en
dc.description.versionPeer revieweden
dc.format.mimetypeapplication/pdfen_US
dc.identifier.citationMattos, B D, Tardy, B L & Rojas, O J 2019, ' Accounting for Substrate Interactions in the Measurement of the Dimensions of Cellulose Nanofibrils ', Biomacromolecules, vol. 20, no. 7, pp. 2657-2665 . https://doi.org/10.1021/acs.biomac.9b00432en
dc.identifier.doi10.1021/acs.biomac.9b00432en_US
dc.identifier.issn1525-7797
dc.identifier.issn1526-4602
dc.identifier.otherPURE UUID: fece7fe6-a36f-4df3-9134-301454fb1060en_US
dc.identifier.otherPURE ITEMURL: https://research.aalto.fi/en/publications/fece7fe6-a36f-4df3-9134-301454fb1060en_US
dc.identifier.otherPURE LINK: http://www.scopus.com/inward/record.url?scp=85068383551&partnerID=8YFLogxKen_US
dc.identifier.otherPURE FILEURL: https://research.aalto.fi/files/35343463/CHEM_Mattos_et_al_Accounting_for_Substrate_Interactions_2019_ACS_Biomacrom.pdfen_US
dc.identifier.urihttps://aaltodoc.aalto.fi/handle/123456789/39534
dc.identifier.urnURN:NBN:fi:aalto-201907304589
dc.language.isoenen
dc.publisherAMER CHEMICAL SOC
dc.relationinfo:eu-repo/grantAgreement/EC/H2020/788489/EU//BioELCellen_US
dc.relation.ispartofseriesBiomacromoleculesen
dc.rightsopenAccessen
dc.titleAccounting for Substrate Interactions in the Measurement of the Dimensions of Cellulose Nanofibrilsen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi
dc.type.versionpublishedVersion
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