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Abstract
Fibre reactivity is essential for cellulose dissolution and derivatisation and a porous fibre structure is one key determinant for a highly reactive pulp. Mechanical and enzymatic treatments are known to improve fibre reactivity and more recently, the combination of mechano-enzymatic treatment has been shown to synergistically enhance the beneficial effect. The aim of this work was to do a systematic study on the effect of dry matter content during enzymatic modification of fibres and define the conditions that optimally improve fibre porosity. The combined mechano-enzymatic treatments at 15–25 w% consistency had the most pronounced effect on fibre porosity and morphology analysed by solute exclusion technique, nitrogen sorption and scanning electron microscopy. Light microscopy imaging confirmed that the combined mechano-enzymatic treatment at high consistency (> 10 w%) resulted in extensive fibrillation of the treated fibres which was not observed after sole mechanical or enzymatic treatments.
Original language | English |
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Pages (from-to) | 5311–5322 |
Number of pages | 12 |
Journal | Cellulose |
Volume | 27 |
DOIs | |
Publication status | Published - Jun 2020 |
MoE publication type | A1 Journal article-refereed |
Keywords
- Endoglucanase
- Enzyme
- Fibre modification
- Fibre reactivity
- High consistency
- Porosity
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Dive into the research topics of 'High consistency mechano-enzymatic pretreatment for kraft fibres: effect of treatment consistency on fibre properties'. Together they form a unique fingerprint.Projects
- 1 Finished
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FinnCERES: Competence Center for the Materials Bioeconomy: A Flagship for our Sustainable Future
Mäkelä, K. (Principal investigator)
01/05/2018 → 31/12/2022
Project: Academy of Finland: Other research funding