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why is it crucial to have liposomes/micelles when forming a self healing hydrogel thorugh hydrphobic interactions?...

why is it crucial to have liposomes/micelles when forming a self healing hydrogel thorugh hydrphobic interactions? how does a crosslinker play a role in this attraction?

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A hydrogel is a macromolecular polymer gel constructed of a network of crosslinked polymer chains. Hydrogels are synthesized from hydrophilic monomers by either chain or step growth, along with a functional crosslinker to promote network formation. A net-like structure along with void imperfections enhance the hydrogel's ability to absorb large amounts of water via hydrogen bonding. As a result, hydrogels, self-healing alike, develop characteristic firm yet elastic properties.

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