High consistency mechano-enzymatic pretreatment for kraft fibres
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Cellulose, Volume 27
AbstractFibre 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.
Endoglucanase, Enzyme, Fibre modification, Fibre reactivity, High consistency, Porosity
Rahikainen , J , Mattila , O , Maloney , T , Lovikka , V , Kruus , K , Suurnäkki , A & Grönqvist , S 2020 , ' High consistency mechano-enzymatic pretreatment for kraft fibres : effect of treatment consistency on fibre properties ' , Cellulose , vol. 27 , pp. 5311–5322 . https://doi.org/10.1007/s10570-020-03123-8