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Polymer microspheres were synthesized by dispersion copolymerization of divinylbenzene (DVB) with vinylbenzyl-terminated poly(t-butyl methacrylate) (PBMA) macromonomers in nonaqueous media (methanol and acetonitrile). The particle diameter increased gradually with an increase of the DVB concentration in methanol or acetonitrile. The particle size distribution was very narrow. PBMA macromonomers acted...