METHOD OF OBTAINING A FRACTION OF CELLULOSE FIBERS WITH INCREASED SOLVENT ACCESSIBILITY

摘要

The present invention relates to a method for producing cellulose products comprising the following steps: a)providing a cellulose pulp, preferably by a method comprising pulping lignocellulosic biomass by a pulping process such that a cellulose pulp is obtained b) fractionating the cellulose pulp such that an over flow fraction and an under flow fraction is obtained c)swelling at least part of the cellulose fibers present in the over flow fraction by soaking at least part of the over flow fraction in a first liquid having a pH of 9.0 or lower such that a first set of swelled cellulose fibers is obtained d)producing at least one first cellulose product from the first set of swelled cellulose fibers obtained in step c) wherein the first cellulose product is a cellulose derivative and/or a cellulose dope.