Reinforcement and stabilization application cases of nanocellulose in graphene oxide composites

1. Application background

Graphene Oxide GO ( Graphene Oxide ，GO ) is widely used in conductive films, functional coatings, composite materials, flexible devices and other fields due to its excellent mechanical properties, electrical properties and rich oxygen-containing functional groups. However, in practical applications, graphene oxide still faces the following common problems:

Easy to agglomerate in aqueous system, lack of dispersion stability

The film or coating structure is relatively brittle and has limited impact resistance and bending resistance.

Insufficient structural integrity and long-term stability after film formation

Customers hope to significantly improve the dispersion stability, structural strength and toughness of graphene oxide without destroying its intrinsic properties , thereby expanding its reliability in functional materials and industrial applications.

What is nanocellulose？

Cellulose nanofibers ( CNF) are ultrafine cellulose fibers made from wood. Wood pulp (papermaking raw material) produced through traditional papermaking technology is relaxed to the nanometer level. This is a new material derived from biomass, also known as nanocellulose.

CNF is as thin as a few nanometers, is considered transparent, has unique viscous properties, is light and strong, and has less deformation due to temperature changes, and is used in many fields.

● Nano = one millionth of the length of 1 millimeter

Process of producing nanocellulose CNF from wood pulp

1. The wood is crushed into small pieces and processed into wood chips (about 5cm wide and about 1cm thick)

2. Extract fiber from wood chips and make pulp in paper mill

3. The pulp is chemically treated to make it thinner and easier to loosen (chemical modification).

4. Apply high pressure to loosen wood fibers (pulp)

We chemically treat the pulp produced in the mill and introduce ionic functional groups into the cellulose, which forms wood fibers. The electrostatic repulsion of this functional group promotes nanoscale defibrillation of fibers while ensuring stable diffusion of elongated fibers in the range of a few nanometers (a few nanometers).

Fibers that are as thin as a few nanometers are thinner than the wavelength of visible light (400 nanometers to 700 nanometers), so they pass the light and become transparent.

2. Background principles for the introduction of nanocellulose

Nanocellulose is a natural nanomaterial with high aspect ratio, high specific surface area and rich hydroxyl structure . Its surface chemical properties are highly matched with graphene oxide.

When nanocellulose is introduced into the graphene oxide system, it can exert a synergistic enhancement effect through the following mechanisms:

Interface synergy and decentralized stability

The hydroxyl groups on the surface of nanocellulose can form a stable hydrogen bond network with the carboxyl groups and hydroxyl groups on the surface of graphene oxide.

Effectively inhibits between graphene oxide sheets π-π stacking and significantly reduces the risk of agglomeration

Construct a three-dimensional enhanced network structure

Nanocellulose forms a continuous nanoscale support skeleton in the system

' Embedding ' two-dimensional graphene oxide sheets into the fiber network to achieve synergistic structural enhancement

Improve mechanical toughness and impact resistance

Under the influence of external force, nanocellulose network can disperse stress

Reduce brittle fracture and transform the material from ' rigid and brittle ' to ' strong and tough '

3. Customer core needs

Improve the dispersion stability of graphene oxide in aqueous phase or composite system

Improve the tensile, impact and bending resistance of composite materials

Maintain the original conductive, barrier or functional properties of graphene oxide

Suitable for large-scale preparation of films, coatings and composite materials

4. Application plan implementation

System construction : introducing an appropriate amount of nanocellulose into the graphene oxide water dispersion system

Uniform dispersion : The two nanomaterials are fully compounded through mechanical stirring and homogenization processes.

Composite molding : Preparation of graphene oxide / nanocellulose composite films or coatings

Performance verification : Systematic testing of dispersion stability, mechanical properties and structural integrity

5. Practical application effects

The graphene oxide system after the introduction of nanocellulose has achieved significant improvements in a number of key properties:

Dispersion stability is significantly enhanced

The composite system has no obvious settlement after being left standing for a long time.

Film forming uniformity is significantly improved

Mechanical strength and toughness are simultaneously improved

Increased tensile strength and enhanced fracture ductility

Not prone to brittleness or delamination under external impact

Structural integrity and durability improvements

After film formation, the structure becomes denser and more stable.

Suitable for repeated bending or complex working conditions

Functional performance remains good

The original functional properties of graphene oxide are not significantly affected

Composite system combines performance and stability advantages

6. Effect comparison

Performance metrics	Pure graphene oxide system	Nanocellulose composite system
Dispersion stability	Easy to reunite	Highly stable
Film formation uniformity	generally	Significant improvement
Impact resistance	More brittle	Strong and impact resistant
structural integrity	Easy to crack	stable and dense
Comprehensive application reliability	medium	Significantly improved

7. Case summary

By introducing nanocellulose into the graphene oxide system, a stable, strong, and scalable composite material system has been successfully constructed . Nanocellulose not only effectively improves the dispersion and structural stability of graphene oxide, but also significantly improves the impact resistance and durability of the material in practical applications.

This case of graphene oxide in provides a mature and replicable technical path for the engineering application the fields of functional films, composite materials, coatings and flexible devices , and has good industrialization and market promotion value.

( Schematic diagram of the three-dimensional network structure of nanocellulose )

Inquiry about nanocellulose

Nanjing Tianlu Nanotechnology Co., Ltd. ，Marketing Department , Nanocellulose Promotion Office

Address: Room 301, Building 2, Phase 3, No. 1, Yuepu Yunchuang Center, No. 6 Shuige Road, Jiangning District

Telephone:18061643560