Process for producing fibrillated cellulose material
AssigneeTeknologian tutkimuskeskus VTT Oy
InventorsJaakko Hiltunen, Katariina Kemppainen, Jaakko Pere
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Abstract
The present invention relates to a process for producing a fibrillated cellulose material. In the invention fibrillated cellulose is produced enzymatically by using a low energy demanding mechanical mixer such as plough share mixer, to enhance the fibrillation. Enzymes and process conditions are chosen so that the cellulose degradation is as low as possible, while obtaining a high yield of nanofibrils. Sugars that are produced into the end-product may also be furthermore exploited.
Claims15
A process for the production of fibrillated cellulose material comprising fibrillation of a cellulose-based starting material with enzyme(s), and enhancing the fibrillation with mechanical mixing, wherein before the fibrillation a starting material is added into a slurry having a consistency on between 10% and 60%, after which the fibrillation is carried out by using an enzyme mix having mainly a cellobiohydrolase activity and a low endoglucanase activity, wherein the endoglucanase activity is sufficient to create new chain ends, combined with non-grinding mechanical mixing.
A fibrillated cellulose material produced by, fibrillation of a cellulose-based starting material with enzyme(s), and enhancing the fibrillation with mechanical mixing, wherein before the fibrillation a starting material is added into a slurry having a consistency on between 10% and 60%, after which the fibrillation is carried out by using an enzyme mix having mainly a cellobiohydrolase activity and a low endoglucanase activity, wherein the endoglucanase activity is sufficient to create new chain ends, combined with non-grinding mechanical mixing.
Dependencies are inferred from the claim text.