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Continuous Stabiliz...
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Bengtsson, AndreasRISE,Material- och ytdesign,Division Bioeconomy and Health, RISE Research Institutes of Sweden, P.O. Box 5604, SE-114 86 Stockholm, Sweden
(författare)
Continuous Stabilization and Carbonization of a Lignin–Cellulose Precursor to Carbon Fiber
- Artikel/kapitelEngelska2022
Förlag, utgivningsår, omfång ...
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2022-05-05
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American Chemical Society (ACS),2022
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electronicrdacarrier
Nummerbeteckningar
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LIBRIS-ID:oai:DiVA.org:kth-321057
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-321057URI
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https://doi.org/10.1021/acsomega.2c01806DOI
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https://urn.kb.se/resolve?urn=urn:nbn:se:ri:diva-59348URI
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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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QC 20230612
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Funding details: European Regional Development Fund, ERDF; Funding text 1: The authors wish to express their gratitude to Södra Foundation for Research, Development and Education and Project Lignocity, funded by the European Regional Development Fund, for providing financial support.
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: The demand for carbon fibers (CFs) based onrenewable raw materials as the reinforcing fiber in composites forlightweight applications is growing. Lignin−cellulose precursorfibers (PFs) are a promising alternative, but so far, there is limitedknowledge of how to continuously convert these PFs underindustrial-like conditions into CFs. Continuous conversion is vitalfor the industrial production of CFs. In this work, we havecompared the continuous conversion of lignin−cellulose PFs (50wt % softwood kraft lignin and 50 wt % dissolving-grade kraft pulp)with batchwise conversion. The PFs were successfully stabilizedand carbonized continuously over a total time of 1.0−1.5 h,comparable to the industrial production of CFs from polyacrylonitrile. CFs derived continuously at 1000 °C with a relative stretch of−10% (fiber contraction) had a conversion yield of 29 wt %, a diameter of 12−15 μm, a Young’s modulus of 46−51 GPa, and atensile strength of 710−920 MPa. In comparison, CFs obtained at 1000 °C via batchwise conversion (12−15 μm diameter) with arelative stretch of 0% and a conversion time of 7 h (due to the low heating and cooling rates) had a higher conversion yield of 34 wt%, a higher Young’s modulus (63−67 GPa) but a similar tensile strength (800−920 MPa). This suggests that the Young’s moduluscan be improved by the optimization of the fiber tension, residence time, and temperature profile during continuous conversion,while a higher tensile strength can be achieved by reducing the fiber diameter as it minimizes the risk of critical defects.
Ämnesord och genrebeteckningar
Biuppslag (personer, institutioner, konferenser, titlar ...)
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Bengtsson, JennyRISE,Polymera material och kompositer,Division Material and Production, RISE Research Institutes of Sweden, P.O. Box 104, SE-431 22 Mölndal, Sweden(Swepub:ri)jennyben@ri.se
(författare)
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Jedvert, KerstinRISE,Polymera material och kompositer,Division Material and Production, RISE Research Institutes of Sweden, P.O. Box 104, SE-431 22 Mölndal, Sweden(Swepub:ri)kerstin.jedvert@ri.se
(författare)
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Kakkonen, MarkusFibrobotics OY, Korkeakoulunkatu 1, FI-33720 Tampere, Finland
(författare)
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Tanhuanpää, OlliFibrobotics OY, Korkeakoulunkatu 1, FI-33720 Tampere, Finland
(författare)
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Brännvall, ElisabetRISE,Bioekonomi och hälsa,Division Bioeconomy and Health, RISE Research Institutes of Sweden, P.O. Box 5604, SE-114 86 Stockholm, Sweden(Swepub:ri)elisabet.brannvall@ri.se
(författare)
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Sedin, Maria,PhDRISE,Material- och ytdesign,Division Bioeconomy and Health, RISE Research Institutes of Sweden, P.O. Box 5604, SE-114 86 Stockholm, Sweden(Swepub:ri)maria.sedin@ri.se
(författare)
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RISEMaterial- och ytdesign
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:ACS Omega: American Chemical Society (ACS)7:19, s. 16793-168022470-1343
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