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.
|DOI - pysyväislinkit|
|Tila||Julkaistu - kesäk. 2020|
|OKM-julkaisutyyppi||A1 Julkaistu artikkeli, soviteltu|
SormenjälkiSukella tutkimusaiheisiin 'High consistency mechano-enzymatic pretreatment for kraft fibres: effect of treatment consistency on fibre properties'. Ne muodostavat yhdessä ainutlaatuisen sormenjäljen.
- 1 Päättynyt
CERES: Competence Center for the materials Bioeconomy: A Flagship for our Sustainable Future
01/05/2018 → 31/12/2022
Projekti: Academy of Finland: Other research funding