Fungal Treatment Modifies Kraft Lignin for Lignin- and Cellulose-Based Carbon Fiber Precursors

Show full item record



Permalink

http://hdl.handle.net/10138/314167

Citation

Mikkila , J , Trogen , M , Koivu , K A Y , Kontro , J , Kuuskeri , J , Maltari , R , Dekere , Z , Kemell , M , Makela , M R , Nousiainen , P A , Hummel , M , Sipila , J & Hilden , K 2020 , ' Fungal Treatment Modifies Kraft Lignin for Lignin- and Cellulose-Based Carbon Fiber Precursors ' , ACS Omega , vol. 5 , no. 11 , pp. 6130-6140 . https://doi.org/10.1021/acsomega.0c00142

Title: Fungal Treatment Modifies Kraft Lignin for Lignin- and Cellulose-Based Carbon Fiber Precursors
Author: Mikkila, Joona; Trogen, Mikaela; Koivu, Klaus A. Y.; Kontro, Jussi; Kuuskeri, Jaana; Maltari, Riku; Dekere, Zane; Kemell, Marianna; Makela, Miia R.; Nousiainen, Paula A.; Hummel, Michael; Sipila, Jussi; Hilden, Kristiina
Other contributor: University of Helsinki, Department of Microbiology
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Microbiology
University of Helsinki, Department of Microbiology
University of Helsinki, Department of Microbiology
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Microbiology
University of Helsinki, Department of Chemistry
University of Helsinki, Department of Chemistry
University of Helsinki, Fungal Genetics and Biotechnology




Date: 2020-03-24
Language: eng
Number of pages: 11
Belongs to series: ACS Omega
ISSN: 2470-1343
DOI: https://doi.org/10.1021/acsomega.0c00142
URI: http://hdl.handle.net/10138/314167
Abstract: The kraft lignin's low molecular weight and too high hydroxyl content hinder its application in bio-based carbon fibers. In this study, we were able to polymerize kraft lignin and reduce the amount of hydroxyl groups by incubating it with the white-rot fungus Obba rivulosa. Enzymatic radical oxidation reactions were hypothesized to induce condensation of lignin, which increased the amount of aromatic rings connected by carbon-carbon bonds. This modification is assumed to be beneficial when aiming for graphite materials such as carbon fibers. Furthermore, the ratio of remaining aliphatic hydroxyls to phenolic hydroxyls was increased, making the structure more favorable for carbon fiber production. When the modified lignin was mixed together with cellulose, the mixture could be spun into intact precursor fibers by using dry-jet wet spinning. The modified lignin leaked less to the spin bath compared with the unmodified lignin starting material, making the recycling of spin-bath solvents easier. The stronger incorporation of modified lignin in the precursor fibers was confirmed by composition analysis, thermogravimetry, and mechanical testing. This work shows how white-rot fungal treatment can be used to modify the structure of lignin to be more favorable for the production of bio-based fiber materials.
Subject: MANGANESE PEROXIDASE
MODEL COMPOUNDS
PYROLYSIS
STABILIZATION
DEGRADATION
OXIDATION
LACCASES
NMMO
11832 Microbiology and virology
220 Industrial biotechnology
Rights:


Files in this item

Total number of downloads: Loading...

Files Size Format View
acsomega.0c00142.pdf 2.934Mb PDF View/Open

This item appears in the following Collection(s)

Show full item record