Special Subject: Powder Technology for the Synthesis and Utility of Powder Materials
Characteristics of Cellulose Nanofibers as Additive
2019 Volume 62 Pages 39-43
Details
2019 Volume 62 Pages 39-43
Cellulose nanofibers (CNFs) are spotlighted as a new application of cellulose. CNFs are prepared by mechanical downsizing of cellulose material such as a pulp. CNFs have a lot of characteristics for examples high strength, high elastic modulus, low coefficient of thermal expansion, high transparency, and large specific surface area. We have continued R&D of CNFs and accumulated numerous fundamental data for industrial applications of CNFs/water dispersions as additives. CNFs can form networking structure in water. CNFs have unique properties such as high viscosities at low consistencies, characteristic thixotropy behavior by shear forces, high emulsifying and suspending capability, etc. High transparent and highly strengthened film also can be prepared by drying of CNFs. CNFs are applying as thickening agent of the ink of the aqueous ball-point pen with unique rheological properties as above. This ball-point pen is attracting attention as the world’s first application of CNF as a writing instrument.
