Overview
Featuring the intrinsic hydroxyl groups of cellulose and a high-aspect-ratio fibrous network, this material is suitable for fundamental reinforcement, film formation, papermaking, and further surface modification.
General information
| Product Name | Hydroxyl Cellulose Nanofibrils |
|---|---|
| Abbreviation | CNF-OH |
| Surface Functional Groups | –OH |
| Product Form | Hydrogel / Powder |
| Raw Material Source | Plant-Derived Cellulose |
| Surface Charge | Nonionic / Weakly Charged Surface |
Specifications
| Appearance | Pure White, Paste-Like |
|---|---|
| Solid Content | 1-2wt%(Available upon request) |
| Diameter | 30-100nm |
| Length | ≥5μm |
| Crystallinity | ≥70% |
| Functional Group Content | 18.4mmol/g |
| pH | 6-8 |
| Dispersion Medium | Deionized Water |
Product details
Product Appearance
Product Characterization
Recommended Applications
Papermaking; Packaging; Composite Reinforcement; Membrane Materials; Hydrogels; Coatings; Further Functionalization
Application Guidelines
Recommended Dosage
For reinforcement, film formation, and rheological applications, a starting range of 0.1–2 wt% is recommended.
Addition Method
First, disperse thoroughly in the aqueous phase, then blend with polymers, pulp, or other fibrous materials.
Dispersion Method
Mechanical stirring, high-speed shear mixing, or homogenization may be used depending on the initial product form.
Precautions
CNF-OH exhibits strong hydrogen-bonding interactions and can readily form a pronounced fibrous network and undergo rapid thickening at high concentrations.
Small-Scale Trial Recommendations
A concentration gradient of 0.2%, 0.5%, 1%, and 2% is recommended to evaluate reinforcement, thickening, film formation, and water-retention performance.
Packaging and Transportation
Available in gram-scale samples, kilogram-scale trial quantities, and bulk orders of one metric ton or more, meeting procurement needs at different stages, including research and testing, pilot-scale validation, and industrial-scale applications.
Samples are supplied in sealed packaging and are preferably shipped via international express delivery. Please contact our customer service team for an international shipping quotation when placing an order.
For kilogram-scale and larger quantities, packaging options such as drums, large drums, or IBC totes are selected according to the product form and order volume, with an appropriate logistics and transportation method arranged accordingly.
FAQ
Q: What is the difference between hydroxyl-functionalized CNF and conventional plant fibers?
A: CNF has been fibrillated down to the nanoscale, providing a higher specific surface area and aspect ratio. It can more readily form a continuous nanofibrous network and exhibit reinforcement, film-forming, and rheological effects.
Q: Why does CNF thicken rapidly or even form a gel as the concentration increases?
A: High-aspect-ratio nanofibrils can become entangled in water and form an interconnected network. Once the concentration reaches a certain range, the network effect increases rapidly, so the dispersion may become highly viscous or gel-like even at relatively low solids contents.
Q: Is hydroxyl-functionalized CNF more suitable for hydrogels, films, or composite reinforcement?
A: All three areas can be evaluated. CNF is particularly advantageous when a fibrous network, film formation, water retention, or toughness enhancement is desired. The optimal choice depends on the matrix and target performance requirements.
Q: How should hydroxyl-functionalized CNF be dispersed and incorporated?
A: For aqueous systems, it is recommended to first dilute or pre-disperse the CNF uniformly, then gradually add it to the main formulation. For high-viscosity systems, mechanical stirring or moderate high-speed shear mixing may be used, with the CNF added incrementally in batches.