Cellulose-lignin composite fibres as precursors for carbon fibres. Part 1 – Manufacturing and properties of precursor fibres

Cellulose-lignin composite fibres were spun from ionic liquid (IL) solutions by dry-jet wet spinning. Birch pre-hydrolysed Kraft (PHK) pulp and organosolv beech (BL) or spruce lignin (SL) were dissolved in the IL 1,5-diazabicyclo[4.3.0]non-5-enium acetate ([DBNH]OAc) to prepare spinning dopes. Fibres with lignin concentrations of up to 50 % were spun successfully. The fibres were analysed focusing on important properties for the production of carbon fibres (CF). Due to the higher molar mass of the SL compared to the BL, SL showed higher stability in the spinning process, giving higher lignin content in the final fibres. The CF yield after carbonization increased with increasing lignin content. The higher carbon content of SL compared to BL, resulted in moderately higher CF yield of the SL fibres, compared to fibres with BL. Overall, the produced cellulose-lignin composite fibres show great potential as precursors for CF production.

Description

| openaire: EC/H2020/715788/EU//WoCaFi

Keywords

Carbon fibres, Fibres, Ionic liquid, Precursor, Spinning

DOI

10.1016/j.carbpol.2020.117133

Citation

Trogen , M , Le , N D , Sawada , D , Guizani , C , Lourençon , T V , Pitkänen , L , Sixta , H , Shah , R , O'Neill , H , Balakshin , M , Byrne , N & Hummel , M 2021 , ' Cellulose-lignin composite fibres as precursors for carbon fibres. Part 1 – Manufacturing and properties of precursor fibres ' , Carbohydrate Polymers , vol. 252 , 117133 . https://doi.org/10.1016/j.carbpol.2020.117133

Permanent link to this item

https://urn.fi/URN:NBN:fi:aalto-202010235933

Collections

[article-cris] Kemian tekniikan korkeakoulu / CHEM

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