Shear and extensional rheology of aqueous suspensions of cellulose nanofibrils for biopolymer-assisted filament spinning

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Lundahl, Meri J.
dc.contributor.author Berta, Marco
dc.contributor.author Ago, Mariko
dc.contributor.author Stading, Mats
dc.contributor.author Rojas, Orlando J.
dc.date.accessioned 2018-11-02T08:44:49Z
dc.date.available 2018-11-02T08:44:49Z
dc.date.issued 2018-12-01
dc.identifier.citation Lundahl , M J , Berta , M , Ago , M , Stading , M & Rojas , O J 2018 , ' Shear and extensional rheology of aqueous suspensions of cellulose nanofibrils for biopolymer-assisted filament spinning ' European Polymer Journal , vol 109 , pp. 367-378 . DOI: 10.1016/j.eurpolymj.2018.10.006 en
dc.identifier.issn 0014-3057
dc.identifier.issn 1873-1945
dc.identifier.other PURE UUID: b71a5915-9187-4b11-beef-ce437f141076
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/shear-and-extensional-rheology-of-aqueous-suspensions-of-cellulose-nanofibrils-for-biopolymerassisted-filament-spinning(b71a5915-9187-4b11-beef-ce437f141076).html
dc.identifier.other PURE LINK: http://www.scopus.com/inward/record.url?scp=85054652679&partnerID=8YFLogxK
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/34534
dc.description | openaire: EC/H2020/788489/EU//BioELCell
dc.description.abstract The shear and extensional rheology of aqueous suspensions of cellulose nanofibrils (CNF) were investigated under dynamic and steady flow fields. The results were compared to those for two biopolymer solutions, cellulose acetate, CA, and guar gum, GG. Wet-spinning experiments were conducted for each system and the outcome related to the respective rheological profile. The spinnability of the system correlated with strong Newtonian and viscous responses under shear as well as long breakup time in capillary breakup experiments. CA solution was the most spinnable, also displaying the strongest Newtonian liquid behavior and the longest capillary breakup time. In contrast, the most shear-thinning and elastic CNF suspension showed instant capillary breakup and was considerably less spinnable. This is due to the limited entanglement between the rigid cellulose fibrils. In order to enable continuous wet-spinning of CNF without filament breakup, GG and CA were used as carrier components in coaxial spinning. The shear and extensional rheology of the system is discussed considering both as supporting polymers. en
dc.format.extent 12
dc.format.extent 367-378
dc.language.iso en en
dc.relation info:eu-repo/grantAgreement/EC/H2020/788489/EU//BioELCell
dc.relation.ispartofseries European Polymer Journal en
dc.relation.ispartofseries Volume 109 en
dc.rights embargoedAccess en
dc.subject.other Physics and Astronomy(all) en
dc.subject.other Organic Chemistry en
dc.subject.other Polymers and Plastics en
dc.subject.other Materials Chemistry en
dc.subject.other 215 Chemical engineering en
dc.subject.other 216 Materials engineering en
dc.subject.other 221 Nanotechnology en
dc.title Shear and extensional rheology of aqueous suspensions of cellulose nanofibrils for biopolymer-assisted filament spinning en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Bioproducts and Biosystems
dc.contributor.department Research Institutes of Sweden
dc.contributor.department Department of Forest Products Technology
dc.contributor.department Department of Applied Physics en
dc.subject.keyword Cellulose nanofibrils
dc.subject.keyword Extension
dc.subject.keyword Hydrogels
dc.subject.keyword Nanocellulose
dc.subject.keyword Shear
dc.subject.keyword Wet spinning
dc.subject.keyword Physics and Astronomy(all)
dc.subject.keyword Organic Chemistry
dc.subject.keyword Polymers and Plastics
dc.subject.keyword Materials Chemistry
dc.subject.keyword 215 Chemical engineering
dc.subject.keyword 216 Materials engineering
dc.subject.keyword 221 Nanotechnology
dc.identifier.urn URN:NBN:fi:aalto-201811025587
dc.identifier.doi 10.1016/j.eurpolymj.2018.10.006
dc.date.embargo info:eu-repo/date/embargoEnd/2020-10-13


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