Release date: 2014-02-26

Recently, researchers from the University of Tokyo in Japan reported in the latest issue of the journal Science that they developed a high-strength hydrogel that does not swell and deform even in water. Used in the manufacture of artificial cartilage and artificial eyeballs. Hydrogel is a kind of jelly-like substance that has a large amount of water between the gaps of polymer materials. It can be used to make soft contact lenses, disposable diapers, etc., but it is deformed and weakened after being placed in water for a long time, so the application is limited. . The researchers added a special polymer to a high-strength hydrogel with a regular mesh structure to make a highly transparent hydrogel that does not swell in water that reaches body temperature. 90%. This hydrogel is simple to make and has a high ductility, and its shape and strength do not change even after immersion in water for one month. In addition, the hydrogel is also very strong and will not be crushed by a weight of 600 kg per square centimeter, while human cartilage can only withstand a weight of 200 kg per square centimeter. Researchers say that this hydrogel can be used to make artificial cartilage and artificial intervertebral discs because it retains its initial shape and high strength in the human environment. When inducing pluripotent stem cells (iPS cells) into the body, it is also possible to use this hydrogel as a "base material" to promote cell differentiation and tissue formation.


Source: bio360

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