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Disassociated molec...
Disassociated molecular orientation distributions of a composite cellulose–lignin carbon fiber precursor : A study by rotor synchronized NMR spectroscopy and X-ray scattering
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- Svenningsson, Leo, 1990 (författare)
- Chalmers University of Technology, Sweden,Chalmers tekniska högskola
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- Bengtsson, Jenny (författare)
- RISE,Kemi, biomaterial och textil,Chalmers tekniska högskola,Chalmers University of Technology
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- Jedvert, Kerstin (författare)
- RISE,Kemi, biomaterial och textil,RISE Research Institutes of Sweden
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- Schlemmer, Werner (författare)
- Graz University of Technology, Austria,Technische Universität Graz
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- Theliander, Hans, 1956 (författare)
- Chalmers University of Technology, Sweden; Wallenberg Wood Science Center, Sweden,Chalmers tekniska högskola
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- Evenäs, Lars, 1976 (författare)
- Chalmers University of Technology, Sweden; Wallenberg Wood Science Center, Sweden,Chalmers tekniska högskola
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(creator_code:org_t)
- Elsevier Ltd, 2021
- 2021
- Engelska.
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Ingår i: Carbohydrate Polymers. - : Elsevier Ltd. - 0144-8617 .- 1879-1344. ; 254
- Relaterad länk:
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https://doi.org/10.1...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Ämnesord
Stäng
- Cellulose–lignin composite carbon fibers have shown to be a potential environmentally benign alternative to the traditional polyacrylonitrile precursor. With the associated cost reduction, cellulose–lignin carbon fibers are an attractive light-weight material for, e.g. wind power and automobile manufacturing. The carbon fiber tenacity, tensile modulus and creep resistance is in part determined by the carbon content and the molecular orientation distribution of the precursor. This work disassociates the molecular orientation of different components in cellulose–lignin composite fibers using rotor-synchronized solid-state nuclear magnetic resonance spectroscopy and X-ray scattering. Our results show that lignin is completely disordered, in a mechanically stretched cellulose–lignin composite fiber, while the cellulose is ordered. In contrast, the native spruce wood raw material displays both oriented lignin and cellulose. The current processes for fabricating a cellulose–lignin composite fiber cannot regain the oriented lignin as observed from the native wood. © 2020 The Author(s)
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Pappers-, massa- och fiberteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Paper, Pulp and Fiber Technology (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Kemiteknik -- Polymerteknologi (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Chemical Engineering -- Polymer Technologies (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Materialteknik -- Kompositmaterial och -teknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Materials Engineering -- Composite Science and Engineering (hsv//eng)
Nyckelord
- Carbon fibers
- Composite
- Fiber
- Lignin
- Molecular orientation distribution
- Regenerated cellulose
- Rotor synchronized magic-angle spinning
- Solid-state NMR
- Wood
- X-ray scattering
- Cellulose
- Cost reduction
- Creep resistance
- Fibers
- Graphite fibers
- Molecular orientation
- Nuclear magnetic resonance spectroscopy
- Wind power
- X ray scattering
- Associated costs
- Automobile manufacturing
- Carbon fiber precursors
- Environmentally benign
- Lightweight materials
- Orientation distributions
- Polyacrylonitrile precursors
- Solid state nuclear magnetic resonance spectroscopy
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- art (ämneskategori)
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