Water-Soluble Xylan (glucuronoxylan)

To make the best use of carbon nanotubes (CNTs), techniques for their solubilization and dispersal are essential. Using water-soluble xylan, CNTs can be safely dissolved and dispersed in water without risk of damage to the environment. As a solvent and dispersant it compares favorably with the dispersants commonly used, and is particularly effective in dispersing single-walled nanotubes.

We have successfully used it to make electromagnetic wave shielding and nanocomposite materials, and have developed CNT scaffolding for culturing cells.

Component

Main component of "GX" is hemicellulose which is extract from natural woods.
"GX" is natural substance.

Product specifications and prices

Product name Product number Quantity Manufacturer’s suggested retail price before tax (JPY)
Water-Soluble Xylan
GX-1
GX-1-100 100g 30,000
GX-1-500 500g 80,000
GX-1-1000 1kg 125,000

Characteristics of water-soluble xylan

It is an extremely good solvent and dispersant of CNTs, compared with other polysaccharides.

CNT dispersant ability of various polysaccharides

Water-soluble xylan and other surfactants' ability to disperse single-walled CNTs

  • Courtesy of Dr Kunio Uchida and Dr Shigehisa Endo from the Particle Measurement Group, Research Institute for Environment Management Technology, National Institute for Advanced Industrial Science and Technology (AIST)

Applications

 

Applications of water-soluble xylan Advantages
Aqueous solution with dispersed CNTs Highly concentrated CNT solution remains stable for long periods*1
Electromagnetic wave shielding
Highly conductive paint, anti-static materials
Can make materials with surface resistance in the range of 101~105 (Ω/□)*2
Nanocomposite materials Can add physical strength and electrical properties (eg conductivity)
CNT scaffolding for cell culture Bone cells can bind to a scaffolding made of CNTs. Particularly suited to culturing osteoblast cell

*1 Molecular model of a complex formed between CNTs and water-soluble xylan

*2 Surface resistance for various products