Improved process for manufacturing of regenerated cellulose and cellulose derivatives
|Karlstads universitet - Avdelningen för kemiteknik
|Funding from Vinnova
|SEK 1 280 000
|October 2008 - December 2011
Purpose and goal
). The project has three goals: 1.To adjust the knowledge we have on how the reactivity of cellulose in dissolving pulps can be improved by using enzymes in connection to manufacturing of regenerated cellulose and cellulose derivatives 2.To further investigate the mechanisms behind the reactivity effects that we have seen. 3.To test the concept in pilot scale
Results and expected effects
The main purpose is to 1) reduce the consumption of chemicals in the viscose process with unchanged product quality when producing high viscosity viscose. The two chemicals that are in focus are NaOH and CS2. The second goal is to 2) further investigate the mechanisms behind the effects obtained and 3) demonstrate the whole concept in larger scale. The latter activity will most probably be done at Freudenberg HP in Norrköping.
Approach and implementation
The method used in the enzyme treatment and in the viscose preparation stages are traditional but the utilization in this way is new. The project will mainly be carried out at Karlstad University and to some smaller extent at Freduenberg HP using specific instruments at the plant and the pilot scale testing will be done at Freduenberg HP.