METHOD FOR FORMING A SUBSEQUENTLY DRYING A COMPOSITE COMPRISING A NANOFIBRILLATED POLYSACCHARIDE

摘要

A method for the production of a composite material comprising nanofibrillated polysaccharide, the method comprising the following steps:
(i) providing a liquid suspension of the nanofibrillated polysaccharide;(ii) bringing said liquid suspension in contact with at least one additive, thereby forming a composite material suspension, wherein the composite comprises the nanofibrillated polysaccharide and the at least one additive,(iii) increasing the solid contents of said composite material suspension, thereby forming a high solid contents composite material suspension.

主权项

1. A method for the production of a composite material comprising any one of a microfibrillated cellulose and a nanofibrillated cellulose, the method comprising the following steps:
(i) providing a liquid suspension of the microfibrillated or nanofibrillated cellulose; wherein the solids content of the microfibrillated or nanofibrillated cellulose is over 2%, (ii) bringing said liquid suspension in contact with at least one additive, wherein the at least one additive is calcium carbonate or a precursor thereof, thereby forming a composite material suspension, wherein the composite comprises the microfibrillated or nanofibrillated cellulose and the calcium carbonate or the precursor thereof, and wherein said calcium carbonate is formed or precipitated onto fibers or fibrils of the microfibrillated or nanofibrillated cellulose; (iii) increasing the solid contents of said composite material suspension, thereby forming a high solid contents composite material suspension; (iv) drying said high solid contents composite material suspension, through a simultaneous heating and mixing operation, whereby a substantially dry composite product is formed.