Porous polymeric structures formed by polymerizing the monomer-containing continuous phase of a high internal phase emulsion (HIPE) have been called polyHIPEs. They can be used as precursors for carbons that maintain the morphology of the polymer, although they undergo dimensional shrinkage as well as weight loss on carbonization. Following formation of a stable emulsion, polymerization of the continuous phase yields a porous, monolithic polymer with interconnected voids throughout the structure. The emulsions can be cast to produce monoliths of a variety of shapes. The synthesis, control of macroporous structure, and a variety of actual and potential applications of have been reviewed.
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