Weidmann - Cellulose Powders
Cellulose powders consist of highly milled cellulose pulp. The fine cellulose fibers are insoluble in water. Furthermore, they are flavorless as well as tasteless. In comparison to microfibrillated cellulose, which is only available as an aqueous suspension, the cellulose powders are suitable for water sensitive applications such as fiber composites and cement. Cellulose powders are available with different fiber lengths and can be produced from a variety of natural raw materials.
Wood is built up by a cellulose fiber matrix. These fibers consist of thin fibril bundles that are held together by hydrogen bonds. With our purely mechanical process we are essentially tearing these hydrogen bonds apart while water molecules go in-between the fibrils to prevent the reformation of these bonds. The resulting, versatile material is a gel-like, water based suspension with a fine network of microfibrils. To reduce transportation costs of microfibrillated cellulose (MFC) the solids content of the suspension can be increased up to 10-30 % depending on the MFC grade.