Reactive extrusion is a special-purpose procedure for continuously producing or modifying polymers in a twin screw extruder.
This method makes especially short reaction times, high yields and low costs possible due to effective mixing and carrying out the reaction in the high consistency range. Reactive extrusion is suitable for modifying cellulose.
By selecting the reaction conditions and screw elements, a variety of different value-added cellulose-based products can be manufactured, such as:
- thermoplastic fibres
- modified and unmodified microfibrillated cellulose (MFC)
- value-added chemical derivatives with varying degrees of degradation of the fibre structure