Description:
<jats:title>Abstract</jats:title><jats:p>The pore stability of styrene‐divinylbenzene <jats:bold>(S‐DVB)</jats:bold> copolymers prepared in toluene‐cyclohexanol mixtures as inert diluents was investigated as a function of the <jats:bold>DVB</jats:bold> concentration, diluent composition, and dilution. The stability of the porous structures increases with increasing <jats:bold>DVB</jats:bold> concentration and, to some extent, with increasing dilution. At a fixed degree of equilibrium volume swelling in toluene, the pore stability also increases with increasing with increasing solvating power of the diluent. The density of <jats:bold>S‐DVB</jats:bold> copolymers increases during the sulfonation reaction with chlorosulfonic acid, but the stability of porosity remains unchanged.</jats:p>