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Anionic Modified Nanocellulose

Cellulose nanofibrils (CNFs) are nanoscale fibers derived from natural cellulose sources. Through TEMPO-mediated oxidation, hydroxyl groups (-OH) in cellulose are converted into carboxyl groups (-COOH), resulting in TEMPO-Oxidized Cellulose Nanofibrils (TOCNF). This modification enhances the material’s chemical properties and structural characteristics, making it suitable for a wide range of industrial applications.

Type: TOCNF (TEMPO-Oxidized Nanocellulose, Carboxylated Nanocellulose)

Material Data

Property

Specification

Chemical Composition

Cellulose

Available Concentrations

1%, 2%, 5%, Dry Powder

Fiber Diameter

10–20 nm

Fiber Length

500–1000 nm

Surface Groups

Carboxyl

Carboxyl Content

1.5 ± 0.1

pH Value

6-7

Product Appearance

Product Characterization

TOCNF exhibits unique properties due to its nanoscale dimensions and surface chemistry:

  • High Surface Area: The nanoscale size provides a large surface area, enhancing interaction with other materials.

  • Improved Dispersibility: The introduction of carboxyl groups increases hydrophilicity, facilitating better dispersion in aqueous systems.

  • Enhanced Mechanical Strength: The fibrous structure contributes to superior mechanical properties, beneficial in composite materials.

Instructions for Use

To utilize TOCNF effectively:

  1. Mixing: Combine the desired amount of TOCNF with water.

  2. Dispersion: Process the mixture using a high-speed blender to achieve a uniform dispersion.

Applications

TOCNF's unique properties make it suitable for various applications:

  • Biomedical Engineering: Used in hydrogels for 3D cell culture, mimicking natural extracellular matrices.

  • Energy Storage: Incorporated into electrodes for batteries and supercapacitors, enhancing performance.

  • Food Industry: Acts as a stabilizer in Pickering emulsions, improving texture and stability.

  • Composite Materials: Reinforces polymers, leading to stronger and lighter materials.

References

  • Bhattacharya, M. et al. "Nanofibrillar cellulose hydrogel promotes three-dimensional liver cell culture." Journal of Controlled Release, vol. 164, no. 3, 2012, pp. 291–298.

  • Siqueira, G. et al. "Cellulose Nanocrystal Inks for 3D Printing of Textured Cellular Architectures." Advanced Functional Materials, vol. 27, no. 12, 2017, 1604619.

  • Kalashnikova, I. et al. "New Pickering emulsions stabilized by bacterial cellulose nanocrystals." Langmuir, vol. 27, no. 12, 2011, pp. 7471–7479.

  • Naderi, A. "Nanofibrillated cellulose: properties reinvestigated." Cellulose, vol. 24, 2017, pp. 1933–1945.

By integrating TOCNF into various products and processes, industries can leverage its advanced properties to enhance performance and sustainability.

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