1. What is Nanocellulose ?

Nanocellulose is a nanoscale material prepared from natural cellulose through physical, chemical or biological methods. The typical size ranges from a few nanometers to tens of nanometers, and the length can reach the micron level. Depending on the structure and preparation method, common types include cellulose nanofibers ( CNF ), cellulose nanocrystals ( CNC ) and bacterial cellulose ( BC ).

As a natural polymer material that is widely sourced, renewable and biodegradable, nanocellulose not only has environmentally friendly properties, but also exhibits excellent mechanical properties and functional designability. It is considered an important representative of the new generation of green functional materials.

2. Core performance advantages of nanocellulose

1. Ultra-high mechanical strength and toughness

Nanocellulose has extremely high specific strength and specific modulus, and the theoretical strength of a single fiber can be close to the level of steel. In composite systems, the tensile strength, impact resistance and fatigue resistance of materials can be significantly improved.

2. Three-dimensional network structure and suspension stability

Nanocellulose can form a stable three-dimensional network structure in a water system, giving the system excellent suspension, thickening and anti-sedimentation capabilities. It is widely used in coatings, daily chemicals, pesticides and other fields.

3. High specific surface area and interfacial activity

Its huge specific surface area makes it easy to interact with polymers, inorganic fillers or functional additives, which is beneficial to the construction of high-performance composite materials and functional coatings.

4. Green, safe and sustainable

Derived from natural cellulose, nanocellulose is non-toxic, degradable and in line with the current industry trends of low carbon, environmental protection and sustainable development.

3. Main preparation technologies of nanocellulose

High-pressure homogenization method : dissociates fibers through strong shear and cavitation, suitable for large-scale preparation of CNF；

TEMPO oxidation method : introduce carboxyl groups to improve fiber dispersion and functionalization;

Acid hydrolysis method : Preparation of high crystallinity CNC；

Biological fermentation method : Preparation of high-purity bacterial cellulose, suitable for high-end medical and electronic fields.

4. Typical application areas of nanocellulose

1. Daily chemicals and personal care

In products such as shampoo, shower gel, and laundry beads, nanocellulose can be used as a natural suspending agent and rheology regulator to improve formula stability and skin feel.

2. Coatings and functional coatings

Used in wood coatings and water-based industrial paints, it can enhance coating film strength, scratch resistance and construction stability, and improve sagging and cracking problems.

3. Pesticides and functional suspension systems

As a green suspension stabilizer, nanocellulose can significantly improve the dispersion and storage stability of pesticide preparations and reduce the dosage of traditional chemical additives.

4. New energy and advanced composite materials

In graphene dispersion, battery separators, flexible electronics and lightweight composite materials, nanocellulose can build a reinforced skeleton to improve structural stability and safety performance.

5. Future development trends

As the demand for green manufacturing and high-performance materials continues to increase, nanocellulose is moving from laboratory research to large-scale application. Through surface modification, composite design and process optimization, nanocellulose will unleash greater potential in high value-added fields such as new energy, electronic information, and biomedical materials.