SYNTHESIS AND THE POROUS STRUCTURE STUDIE S OF THE MACROPOROUS HIGH CROSS-LINKING STYRENE-DIVINYL-A COPOLYMERS

Styrene-2, 2-bismethacryloyloxyphenyl propane(divinyl-A) copolymers ha ve been prepared by suspension copolymerization in the presence of tol uene and using isoamyl alcohol as the diluents in the present paper. 2 , 2-Bismethacryloyloxyphenyl propane(divinyl-A) as a novel crosslinkin g agent is first used in the synthesis of styrene type copolymer, A se ries of the macroporous and high crosslinking copolymers have been syn thesized under different reaction conditions, The effects of the conte nt of divinyl-A, type and content of these diluents, the amounts of in itiator and PVA on the development of porosity of the copolymers are d iscussed. The characterization of the copolymers was carried out throu gh the determination of apparent density, specific area, pore volume a nd pore size, The appearance of the copolymer beads was examined by us ing scanning electron microscopy, It was found that the porosity of st yrene-divinyl-A copoymers increased with the increase of the amount of divinyl-A, And the specific area, pore volume and pore size increased with the increase of amount of unsuitable solvent(isoamyl alcohol) co ntent in diluent mixture.