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Smart hydrogel materials types

N0W Applications. A new smart material that expands and contracts in response to certain proteins is being developed in Japan for use either as a drug delivery vehicle or as an artificial muscle (68). The material is a hydrogel prepared from two different types of polyacrylamide. At one end an immunoglobulin (IgG) protein, derived from rabbit, is attached and to the other end another antibody, derived from goat, is bound with a specific site for the rabbit IgG. In water, the two sets of molecules cross-link to each other via the IgG and antibody sites to form a tightly bound gel. The resultant gel swells in a solution of IgG because the free protein binds to the antibodies on the second type of polymer, thereby breaking the... [Pg.7723]

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See also in sourсe #XX -- [ Pg.36 ]



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