Application cases of nanocellulose in adhesives

As a natural nanomaterial, nanocellulose has excellent mechanical properties, high specific surface area and rich surface functional groups, so it has great potential for application in adhesives. Here are some examples of nanocellulose application in adhesives:

1. Application of nanocellulose in wood adhesives

• Case : A research team at Aalto University in Finland has developed an environmentally friendly wood adhesive based on nanocellulose .

• Details : Traditional wood adhesives mostly rely on petroleum-based chemicals, which have environmental and health problems. The researchers combined nanocellulose with soy protein to develop a wood binder that is entirely based on natural materials. This adhesive not only has the same mechanical strength as traditional synthetic adhesives, but also has better environmental protection and biodegradability. In practical applications, the nanocellulose-based adhesive exhibits excellent adhesive properties and is considered a green adhesive with commercial prospects.

2. Application of nanocellulose in paper adhesives

• Case : A research team at the KTH Royal Institute of Technology has developed a nanocellulose-based paper adhesive to enhance the mechanical strength of paper products.

• Details : The research team used the nanocellulose's high specific surface area and adhesion properties to apply it to the coatings and adhesives of paper. This adhesive significantly improves the tensile strength and tear resistance of the paper without affecting the flexibility of the paper. This adhesive also has good transparency and smoothness, and is widely used in the production of high-end paper products and packaging materials.

3. Application of nanocellulose in building adhesives

• Case : A research team at the University of British Columbia in Canada has developed a nanocellulose -based building adhesive to enhance the properties of cement- based materials .

• Details : In the construction industry, cement-based adhesives usually require good mechanical properties and durability. The research team added nanocellulose to the cement-based adhesive and found that it can significantly improve the compressive strength and crack resistance of the adhesive. The addition of nanocellulose also improves the rheological performance and construction performance of cement, reducing the shrinkage and cracking of cement. This nanocellulose modified adhesive has broad application prospects in construction and restoration engineering.

4. Application of nanocellulose in adhesives

• Case : A research team at the University of Wisconsin-Madison developed a nanocellulose- reinforced adhesive for use in the aerospace and automotive industries.

• Details : High-performance adhesives are very important in the aerospace and automotive industries, and require high strength, high temperature resistance and fatigue resistance. Researchers combined nanocellulose with epoxy resin to develop a composite adhesive with super strong adhesion properties. The nano-size and high surface energy of nanocellulose make it form a strong reinforcement network in the resin matrix, significantly improving the mechanical properties and heat resistance of the adhesive. This nanocellulose reinforced adhesive exhibits excellent bonding strength and reliability in the manufacture of aircraft equipment and automotive components.

5. Application of nanocellulose in biomedical adhesives

• Case : A research team at Stanford University in the United States has developed a nanocellulose-based biomedical adhesive for tissue repair and surgical suture.

• Details : The research team combined nanocellulose with natural polysaccharides to develop a biodegradable and non-toxic medical binder. This adhesive has good biocompatibility and excellent adhesion properties, and can be used for the repair of skin and internal tissues. Experiments have shown that nanocellulose-based medical adhesives show good biological activity and mechanical properties during the healing process after surgery and are a potential innovative material to replace traditional surgical sutures.

These cases demonstrate the diversified application of nanocellulose in adhesives, especially in environmental protection, enhanced mechanical properties and improved bond strength, and promote innovative development of adhesive materials.