Overview
Surface hydrophobic functionalization improves the wetting and interfacial compatibility of CNC with low-polarity polymers, resins, and organic phases. CelluBio provides material selection guidance and preliminary trial recommendations for academic research and industrial R&D applications.
General information
| Product Name | Hydrophobic Cellulose Nanocrystals |
|---|---|
| Abbreviation | H-CNC / HP-CNC |
| Surface Functional Groups | –OH、–CH₃ |
| Product Form | Powder |
| Raw Material Source | Plant-Derived Cellulose |
| Surface Charge | Nonionic / Weakly Charged Surface |
Specifications
| Appearance | White Powder |
|---|---|
| Diameter | 10-30nm |
| Length | 200-500nm |
| Crystallinity | ≥70% |
| Functional Group Content | 0.59mmol/g |
| pH | 6-8 |
Product details
Product Appearance
Product Characterization
Recommended Applications
Resins；Plastics；Rubber；Hydrophobic Coatings；Organic-Phase Composites;Functional Films；Interfacial Reinforcement
Application Guidelines
Recommended Dosage
For resins, plastics, and hydrophobic composite systems, an initial addition level of 0.5–5 wt% is recommended.
Addition Method
First, disperse H-CNC in an organic medium, resin, or premixed component that is compatible with the matrix, and then incorporate it into the main formulation.
Dispersion Method
High-speed shear mixing or moderate ultrasonication is recommended. The dispersion medium should be selected according to the type of hydrophobic modification.
Precautions
The aqueous dispersion methods used for conventional hydrophilic CNC should not be directly applied. Particular attention should be paid to the interfacial compatibility between H-CNC and the resin/polymer matrix.
Small-Scale Trial Recommendations
Evaluate a loading gradient such as 1%, 2%, and 3%, and compare dispersion, mechanical properties, interfacial adhesion, and water absorption.
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 hydrophobically modified CNC and conventional CNC?
A: Hydrophobic modification reduces the surface hydrophilicity of CNC, which generally improves its interfacial compatibility with low-polarity polymers and hydrophobic media. Conventional CNC is more suitable for aqueous and hydrophilic systems.
Q: How should the effectiveness of hydrophobic modification be characterized?
A: The modification effect can be evaluated using a combination of contact angle measurements and surface chemical characterization techniques such as FTIR and XPS. The dispersion behavior in the target medium and the interfacial morphology of the resulting composite should also be considered for a comprehensive assessment.
Q: Can hydrophobic CNC be incorporated into epoxy, silicone, rubber, PLA/PBAT, and similar systems?
A: It has potential for application research in these systems. However, different resins vary significantly in polarity, curing mechanisms, and processing temperatures. It is recommended to first conduct medium-compatibility and low-loading dispersion tests before incorporating the material into a complete formulation.
Q: What are the advantages of hydrophobic CNC over conventional CNC for polymer reinforcement?
A: The primary advantage is its potential to improve interfacial compatibility and dispersion within hydrophobic matrices, thereby reducing the risk of agglomeration that can occur when hydrophilic nanocellulose is directly incorporated into low-polarity resins.