Nano cellulose whiskers-natural and renewable enhancing additives

01 cellulose

Celluous

Cellulose is a kind of green, renewable, environmentally friendly, biodegradable, non-toxic natural polymer polysaccharide material (the structural formula is shown in the figure).

With the serious shortage of resources and people emphasis on environmental protection, the effective use of this cheap and abundant green and renewable resources, the use of new technologies to reassemble and modify cellulose molecules and whiskers in the microscopic field, has developed New products with excellent performance are extremely important. Cellulose has good biocompatibility.

02 Nano cellulose whiskers and their applications

It has been used in tissue anti-adhesion materials and tissue engineering scaffold materials. Nanocellulose whiskers (CNWs) have a single crystal structure with a large specific surface area and aspect ratio, as well as excellent mechanical strength, so they have what traditional fillers do not have. characteristic.

Nano cellulose whiskers (CNWs) have high crystallinity, strong hydrophilicity, high strength, special rheological properties and mechanical properties, and have a wide range of uses: they can be used to prepare anti-counterfeiting labels and advanced color-changing inks, and can also be combined with other Composite preparation of biodegradable nanomaterials (due to some shortcomings of biological materials, such as poor mechanical properties, poor water resistance, etc., their practical applications are subject to certain restrictions. Various modification methods can be used to improve related properties. More research on modification).

In addition, nano-cellulose whiskers can also be used in various medical materials, ion adsorption and exchange materials, biological functional materials, food, papermaking and other fields.

The application fields of cellulose nanofibers involve biomedicine, automobile manufacturing, aerospace, construction, military special materials, electronic products, cosmetics, coatings, paints, food, papermaking, composite materials and polymer reinforcement.

Typical parameters of market nanofibers

1. Nano cellulose whisker CNWs size: diameter 10~50nm, length 100~500nm, aspect ratio 1~100;

2. Size of cellulose nanofiber CNFs: diameter 3~30nm, length 300nm~micron level;

3. Elastic modulus: 135~150GPa;

4. Density: 1.6g.cm-3;

5. Purity of nano cellulose material: above 99.9%;

6. Crystallinity: ≥75%;

7. Start decomposition temperature: ≥320℃;

8. pH value: 6~7℃;

Source of information: Additives State

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