Overview
A foundational CNC material characterized primarily by the intrinsic hydroxyl groups of cellulose on its surface. It is suitable for use as a rigid nanoscale reinforcing phase, film-forming component, and base material for further surface functionalization. CelluBio provides material selection guidance and preliminary trial recommendations for academic research and industrial R&D applications.
General information
| Product Name | Hydroxyl Cellulose Nanocrystals |
|---|---|
| Abbreviation | CNC-OH |
| Surface Functional Groups | –OH |
| Product Form | Aqueous Dispersion / Powder |
| Raw Material Source | Plant-Derived Cellulose |
| Surface Charge | Nonionic / Weak Surface Charge |
Specifications
| Appearance | Pure White Liquid |
|---|---|
| Solid Content | 2-4wt% (Available upon request) |
| Diameter | 10-30nm |
| Length | 200-500nm |
| Crystallinity | ≥80% |
| Surface Functional Group Content | - |
| pH | 6-8 |
| Dispersion Medium | Deionized Water |
Product details
Prodcut Appearance
Product Characterization
Recommended Application Areas
Capsule / Film Reinforcement Research；Polymer Reinforcement；Membrane Materials；Coatings；Bio-Based Composites；Secondary Functionalization
Application Guidelines for Unmodified Cellulose Nanocrystals
Recommended Dosage
For composite reinforcement, an initial dosage of 0.5–3 wt% based on the dry weight of the matrix is recommended. For preliminary trials, it is recommended to evaluate 0.5%, 1%, 2%, and 3% dosage levels.
Addition Method
For water-soluble or hydrophilic systems, first disperse CNC-OH uniformly in the aqueous phase, then gradually blend it with the polymer solution under continuous stirring.
Dispersion Method
Mechanical stirring, high-shear mixing, or moderate ultrasonication may be used, depending on the viscosity and dispersion requirements of the system.
Precautions
Hydroxyl-functionalized CNC primarily interacts through hydrogen bonding and interfacial interactions. When directly incorporated into hydrophobic matrices, compatibility and interfacial adhesion should be carefully evaluated.
Preliminary Trial Recommendation
CNC-OH is particularly suitable for evaluating changes in reinforcement, film-forming performance, and interfacial properties before and after the addition of unfunctionalized CNC.
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: Is hydroxyl-functionalized CNC considered unmodified cellulose nanocrystals?
A: If no additional surface functionalization has been introduced, it can generally be regarded as a basic CNC material characterized primarily by the intrinsic hydroxyl groups of cellulose on its surface. The specific classification should ultimately be determined based on the preparation process and characterization results.
Q: Is SEM, TEM, or AFM more suitable for characterizing the size of CNC?
A: TEM and AFM are more commonly used to observe the dimensions and morphology of nanocrystals, while SEM is more suitable for examining surface features or aggregated structures in the dry state. Since sample preparation methods can affect the observed results, it is recommended to combine at least two characterization techniques.
Q: What are the advantages of hydroxyl-functionalized CNC for polymer reinforcement?
A: CNC exhibits high rigidity and nanoscale dimensions, making it suitable as a rigid nanoscale reinforcing phase. The actual reinforcement performance depends on dispersion, loading level, and interfacial compatibility with the polymer matrix.
Q: Can hydroxyl-functionalized CNC be directly incorporated into hydrophobic resins?
A: Compatibility should generally be evaluated first. CNC-OH has a hydrophilic surface and may aggregate in low-polarity resins. The dispersion process can be optimized, or hydrophobically modified CNC can be selected to improve compatibility.