Abstract
AbstractDepending on the amount of porogenic (toluene) or crosslinking (divinyl benzene) agent, the suspension copolymerization of styrene‐divinyl benzene (DVB) — vinyl benzylchloride (VBC) leads to gel type or macroporous resins. Partial replacement of styrene by VBC does not change much the morphology of the resins. A rather sharp boundary is observed between the two kinds of resins, macroporous resins can be visualized as small nodules of highly crosslinked material linked by loose chains strained in the dry state (narrow distribution of very small pores) and relaxed in the swollen state, thus accounting for the very high swelling ratio observed either in the solvent or in nonsolvent.
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