Porous polymeric materials could be successfully prepared by gamma radiation polymerization of BA- containing micmemulsions．The main aims of this paper are txying to control the pore structures of the polymer obtained by mlcroemulsion polymerization and to alleviate the occurrence of phase separation during the polymerization of miememulsions．The emulsifier systems

including a nonionic mixture of OP-4 and OP-10

an anionic-nonionic mixture of SAO and OP-10

a cationic-nonionie mixture of CTAB and OP-4

could be used successfully to prepare stable

transparent mieroemulsions

which have different bicontinuous phase range The resulting polymers were studied by scanning electron microscopy (SEM)．It was found that their morphology characteristics strongly depended on the composition (water content

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functional comonomer) of the precursor microemulsions．