Cellulose Nanofiber

5.05.02.Cellulose Nanofiber Cellulose Nanofiber (Cellulose Nanofibril, Nanofibrillated Cellulose, CNFs) Technical Properties: Appearance (Color) White Appearance (Form) Dry powder (~4 wt.% moisture) Average Particle Size 10-20 nm wide, 2-3 µm length Cellulose Crystallinity (XRD) 92% Decomposition Temperature (TGA in N2) 329 oC Density 1.50 g/cm3 Frequently Asked Questions About CNF 1. What is the source of the Nano Fibrillated Cellulose? (hardwood or softwood and the tree name like Oak, Douglas fir, Birch, etc.) The raw material is cotton 2. What is the surface charge of the NFC? (example - is it phosphorylated or carboxymethylated) Surface is carboxymethylated. CNF is modified by carboxymethylation and then mechanically processed. 3. Is the CNF hydrophilic? Yes, it is hydrophilic, using high-pressure homogenizer 40MPA 2-3 times, it can disperse in water. 4. Is the CNF freeze-dried/spray-dried/TEMPO-oxidized? It is made by normal dry 5. Is there any surface groups on CNF? The surface of CNF contains both hydroxyl and carboxyl groups, and the carboxyl content is 2.5 mmol/g (determined by conductivity titration). The carboxyl group is relatively stable, and it is difficult to change it under environmental conditions 6. What is the main functional group of CNF? The main functional group is -OH.