Overview
Surface cationization imparts a positively charged surface, enabling electrostatic interactions with anionic dyes, polyelectrolytes, and negatively charged particles. CelluBio provides material selection guidance and preliminary trial recommendations for academic research and industrial R&D applications.
General information
| Product Name | Cationic Cellulose Nanocrystals |
|---|---|
| Abbreviation | Cat-CNC |
| Surface Functional Groups | –OH and Cationic Functional Groups |
| Product Form | Aqueous Dispersion / Powder |
| Raw Material Source | Plant-Derived Cellulose |
| Surface Charge | Cationic |
Specifications
| Appearance | White Liquid |
|---|---|
| Solid Content | 2wt% |
| Diameter | 5-10nm |
| Length | 200-500nm |
| Crystallinity | ≥60% |
| Functional Group Content | 0.58mmol/g |
| pH | 6-8 |
| Dispersion Medium | Deionized Water |
Product details
Product Appearance
Product Characterization
Recommended Application Areas
Anionic Dye Adsorption；Water Treatment Research；Polyelectrolyte Complexation；Functional Coatings；Interfacial Assembly
Application Guidelines
Recommended Dosage
For adsorption and functional composite applications, an initial dosage of 0.1–2 wt% is recommended. For adsorption studies, it is preferable to design experiments based on the mass ratio of the target substance to CNC.
Addition Method
First, disperse Cat-CNC uniformly, then slowly add it to the anionic dye, polyelectrolyte, or negatively charged system under continuous stirring.
Dispersion Method
Mechanical stirring in an aqueous medium is generally sufficient. Moderate ultrasonication may be used when necessary.
Precautions
Avoid direct mixing with highly concentrated anionic components, as strong electrostatic interactions may cause rapid flocculation.
Preliminary Trial Recommendation
For adsorption studies, it is recommended to systematically evaluate the effects of pH, contact time, target substance concentration, and CNC dosage.
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: Why is cationic CNC positively charged, and how is its surface charge characterized?
A: Cationization introduces positively charged functional groups onto the cellulose surface, giving CNC a cationic surface characteristic under suitable aqueous conditions. Surface charge is typically evaluated in combination with zeta potential measurements and functional group characterization.
Q: Why does cationic CNC tend to flocculate when added to anionic systems?
A: When oppositely charged components are present at locally high concentrations, rapid electrostatic complexation may occur, potentially leading to charge neutralization and loss of dispersion stability. Therefore, pre-dilution, gradual addition, and appropriate ratio control are recommended.
Q: Why is cationic CNC suitable for dye adsorption and color-removal materials?
A: Its positively charged surface can interact electrostatically with anionic dyes and negatively charged contaminants, making it suitable for applications involving adsorption, interfacial assembly, and functional carriers.
Q: How should cationic CNC and the corresponding cationic CNF be selected?
A: Cationic CNF is generally more suitable when a fibrous network, film formation, thickening, or structural support is required. Cationic CNC may be preferentially evaluated when a particulate nanoscale material, lower impact on network viscosity, or interfacial assembly is desired.