Improved yield of carbon fibres from cellulose and kraft lignin

Bengtsson, Andreas (author): KTH,Fiber- och polymerteknologi,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH)

Bengtsson, Jenny (author): RISE,IVF,Swerea IVF, Box 104, SE-43122 Molndal, Sweden.,Chalmers tekniska högskola,Chalmers University of Technology

Olsson, Carina (author): RISE,IVF,Swerea IVF, Box 104, SE-43122 Molndal, Sweden.

Sedin, Maria, PhD (author): RISE,Papperstillverkning och förpackningar,RISE Innventia, Box 5604, SE-11486 Stockholm, Sweden.,RISE Research Institutes of Sweden

Jedvert, Kerstin (author): RISE,IVF,Swerea IVF, Box 104, SE-43122 Molndal, Sweden.

Theliander, Hans, 1956 (author): Chalmers University of Technology, Sweden,Chalmers Univ Technol, SE-41296 Gothenburg, Sweden.,Chalmers tekniska högskola

Sjöholm, Elisabeth, Associiate Professor (author): RISE,Biobaserade material,RISE Innventia, Box 5604, SE-11486 Stockholm, Sweden.,RISE Research Institutes of Sweden

(creator_code:org_t)

2018-07-27
2018
English.
In: Holzforschung. - : Walter de Gruyter GmbH. - 0018-3830 .- 1437-434X. ; 72:12, s. 1007-1016

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; https://urn.kb.se/re...; https://research.cha...; https://research.cha...; show less...

Abstract Subject headings

To meet the demand for carbon-fibre-reinforced composites in lightweight applications, cost-efficient processing and new raw materials are sought for. Cellulose and kraft lignin are each interesting renewables for this purpose due to their high availability. The molecular order of cellulose is an excellent property, as is the high carbon content of lignin. By co-processing cellulose and lignin, the advantages of these macromolecules are synergistic for producing carbon fibre (CF) of commercial grade in high yields. CFs were prepared from precursor fibres (PFs) made from 70:30 blends of softwood kraft lignin (SW-KL) and cellulose by dry-jet wet spinning with the ionic liquid (IL) 1-ethyl-3-methylimidazolium acetate ([EMIm][OAc]) as a solvent. In focus was the impact of the molecular mass of lignin and the type of cellulose source on the CF yield and properties, while membrane-filtrated kraft lignin and cellulose from dissolving kraft pulp and fully bleached paper-grade SW-KP (kraft pulp) served as sources. Under the investigated conditions, the yield increased from around 22% for CF from neat cellulose to about 40% in the presence of lignin, irrespective of the type of SW-KL. The yield increment was also higher relative to the theoretical one for CF made from blends (69%) compared to those made from neat celluloses (48-51%). No difference in the mechanical properties of the produced CF was observed.

NATURVETENSKAP -- Kemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences (hsv//eng)
NATURVETENSKAP -- Kemi -- Polymerkemi (hsv//swe)
NATURAL SCIENCES -- Chemical Sciences -- Polymer Chemistry (hsv//eng)
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)

By the author/editor: Bengtsson, Andre ...; Bengtsson, Jenny; Olsson, Carina; Sedin, Maria, Ph ...; Jedvert, Kerstin; Theliander, Hans ...; show more...; Sjöholm, Elisabe ...; show less...

About the subject

NATURAL SCIENCES: NATURAL SCIENCES; and Chemical Science ...; and Polymer Chemistr ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Materials Engine ...; and Paper Pulp and F ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Chemical Enginee ...; and Polymer Technolo ...

By the university: RISE; Royal Institute of Technology; Chalmers University of Technology

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