Improved yield of carbon fibres from cellulose and kraft lignin

Bengtsson, AndreasKTH,Fiber- och polymerteknologi,Kungliga Tekniska Högskolan (KTH),Royal Institute of Technology (KTH) (författare)

QC 20181211
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
1-ethyl-3-methylimidazolium acetate (EMIMAc)
carbon fibre (CF)
cellulose
dissolving pulp
dry-jet wet-spun
fractionation
kraft pulp
LignoBoost lignin
molecular mass
softwood kraft lignin
Carbon fibers
Dissolution
Fiber reinforced materials
Fiber reinforced plastics
Ionic liquids
Softwoods
1-ethyl-3-methylimidazolium acetates
Carbon fibre reinforced composites
Dry jet-wet spinning
High carbon content
Lightweight application
Molecular ordering
Softwood kraft lignins
Lignin

Bengtsson, JennyRISE,IVF,Swerea IVF, Box 104, SE-43122 Molndal, Sweden.,Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)jenb (författare)
Olsson, CarinaRISE,IVF,Swerea IVF, Box 104, SE-43122 Molndal, Sweden.(Swepub:cth)carinao (författare)
Sedin, Maria,PhDRISE,Papperstillverkning och förpackningar,RISE Innventia, Box 5604, SE-11486 Stockholm, Sweden.,RISE Research Institutes of Sweden(Swepub:cth)sedin (författare)
Jedvert, KerstinRISE,IVF,Swerea IVF, Box 104, SE-43122 Molndal, Sweden.(Swepub:cth)jedvert (författare)
Theliander, Hans,1956Chalmers University of Technology, Sweden,Chalmers Univ Technol, SE-41296 Gothenburg, Sweden.,Chalmers tekniska högskola(Swepub:cth)hanst (författare)
Sjöholm, Elisabeth,Associiate ProfessorRISE,Biobaserade material,RISE Innventia, Box 5604, SE-11486 Stockholm, Sweden.,RISE Research Institutes of Sweden(Swepub:ri)elisabeth.sjoholm@ri.se (författare)
KTHFiber- och polymerteknologi (creator_code:org_t)

Ingår i:Holzforschung: Walter de Gruyter GmbH72:12, s. 1007-10160018-38301437-434X

Av författaren/redakt...: Bengtsson, Andre ...; Bengtsson, Jenny; Olsson, Carina; Sedin, Maria, Ph ...; Jedvert, Kerstin; Theliander, Hans ...; visa fler...; Sjöholm, Elisabe ...; visa färre...

Om ämnet

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Materialteknik; och Pappers massa oc ...

TEKNIK OCH TEKNOLOGIER: TEKNIK OCH TEKNO ...; och Kemiteknik; och Polymerteknologi

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