hydrogel

A gel (from the lat. geluâfreezing, cold, ice or gelatusâfrozen, immobile) is a solid, jelly-like material that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute cross-linked system, which exhibits no flow when in the steady-state.[1] By weight, gels are mostly liquid, yet they behave like solids due to a three-dimensional cross-linked network within the liquid. It is the crosslinking within the fluid that give a gel its structure (hardness) and contribute to the adhesive stick (tack).[2] In this way gels are a dispersion of molecules of a liquid within a solid in which the solid is the continuous phase and the liquid is the discontinuous phase.

For more information about hydrogel check the Wikipedia article here

ZME Science posts about hydrogel

New biocompatible, self-healing gel is perfect replacement for cartilages

Thu, Sep 6, 2012

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A team of experts in mechanics, materials, medicine and tissue engineering have managed to create a self replicating gel which can stretch about 21 times its length. The water-based tough gel is also self-healing and biocompatible, which means it could be perfect for people with cartilage injuries. When 1+1 isn’t 2 The new hydrogel (names [...]

alginate, covalent, covalent bond, hydrogel, polyacrylamide, polymer

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