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The challenge of pr...
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Bengtsson, JennyRISE,Kemi, biomaterial och textil,Chalmers University of Technology, Sweden,Chalmers tekniska högskola,RISE Research Institutes of Sweden
(författare)
The challenge of predicting spinnability : Investigating benefits of adding lignin to cellulose solutions in air-gap spinning
- Artikel/kapitelEngelska2021
Förlag, utgivningsår, omfång ...
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2021-02-23
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John Wiley and Sons Inc,2021
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printrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:ri-52521
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https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-52521URI
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https://doi.org/10.1002/app.50629DOI
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https://research.chalmers.se/publication/522551URI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:art swepub-publicationtype
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Funding details: Chalmers Tekniska Högskola; Funding details: Kungliga Tekniska Högskolan, KTH; Funding details: Energimyndigheten; Funding text 1: This work was partly performed within the project LightFibre, a collaboration between RISE, Chalmers University of Technology, The Royal Institute of Technology, Valmet AB and SCA Forest Products AB, financed by the Swedish Energy Agency.
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In this study, the underlying mechanism for improved spinnability when mixing lignin and cellulose in solution was investigated. Co-processing of lignin and cellulose has previously been identified as a potential route for production of inexpensive and bio-based carbon fibers. The molecular order of cellulose contributes to the strength of the fibers and the high carbon content of lignin improves the yield during conversion to carbon fibers. The current work presents an additional benefit of combining lignin and cellulose; solutions that contain both lignin and cellulose could be air-gap spun at substantially higher draw ratios than pure cellulose solutions, that is, lignin improved the spinnability. Fibers were spun from solutions containing different ratios of lignin, from 0 to 70 wt%, and the critical draw ratio was determined at various temperatures of solution. The observations were followed by characterization of the solutions with shear and elongational viscosity and surface tension, but none of these methods could explain the beneficial effect of lignin on the spinnability. However, by measuring the take-up force it was found that lignin seems to stabilize against diameter fluctuations during spinning, and plausible explanations are discussed
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Jedvert, KerstinRISE,Kemi, biomaterial och textil,RISE Research Institutes of Sweden(Swepub:cth)jedvert
(författare)
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Köhnke, TobiasRISE,Kemi, biomaterial och textil,RISE Research Institutes of Sweden(Swepub:cth)k99koto
(författare)
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Theliander, Hans,1956Chalmers University of Technology, Sweden,Chalmers tekniska högskola(Swepub:cth)hanst
(författare)
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RISEKemi, biomaterial och textil
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:Journal of Applied Polymer Science: John Wiley and Sons Inc138:260021-89951097-4628
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