With anhydrous aluminum trichloride as Friedel-Crafts catalyst

the postcrosslinking reaction of macroporous St-DVB copolymers in the presence of carbon tetrachloride was investigated．The results show that the synthesis conditions for the starting copolymers

including the DVB content

the type and amount of the porogens

play an important role in forming the pore structure of the postcrosslinked products．When the starting copolymers with relatively high DVB content were synthesized using good solvent(toluene) as porogen

the specific surface area for the postcrosslinked products could reach the value of 1000 m2／g or higher．The postcrosslinking reaction

generally

increases the pore volume

decreases the average pore diameter

and greatly increases the stability of pore structure of the resulted products．The role of the carbon tetrachloride as a crosslinker

at relatively low DVB contents of the starting copolymers

could be confirmed by the C=O group peaks in IR spectra of the postcrosslinked products．On the other hand

an alkylation reaction of the pendant vinyl groups with neighboring aromatic rings is believed to dominate the course of the postcrosslinking at high level of DVB content

as manifested by the good correlation of the consumption of pendant vinyl group with the increment of specific surface area of the copolymers after postcrosslinking reaction．