Scientists have developed a highly elastic, super-tough fibers, similar in nature and nature of spider silk, has a wide range of applications, and the production process of green.
Spider silk is one of the toughest natural fibers, making artificial fibers comparable to natural spider silk, which is an important research direction in materials science. The University of Cambridge recently released a press release said that compared with the existing production methods, this new technology low energy consumption, do not need to use toxic solvents, and can operate at room temperature can be used to improve the artificial spider silk and other synthetic fibers Production. Related papers published in the United States "National Academy of Sciences" on.
The researchers used a gel as a raw material, spinning out the filament from the spinning method, similar to spider silk. 98% of the gel is water and the rest consists of specially treated silica nanoparticles and cellulose that are handcuffed together by a handcuffed tubular molecule called a cucurbituril.
In the water-rich environment of the gel, the interaction between different molecules allows them to combine to form a complex supramolecular structure, allowing the formation of filaments of only a few microns in diameter at room temperature. About 30 seconds later, the moisture in the yarn evaporates, leaving behind fibers with high toughness and elasticity.
Tensile strength of this fiber is about 100 MPa to 150 MPa, about one-tenth of the natural spider silk, higher than some synthetic fibers such as viscose rayon and rayon, and natural fibers such as human and animal hair . In addition, it has a very high damping, like a bungee cord can absorb a lot of energy. These attributes make it useful for making special textiles, sensors, and more.
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