| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for producing a porous substance, capable of easily obtaining the homogeneous polymer porous substance. SOLUTION: This method for producing a porous substance has characteristics comprising controlling an aqueous monomer solution containing monomers comprising a water-soluble vinylic monomer and a cross-linking agent, one or more kinds of compounds selected from the group consisting of carbonic salts and bicarbonic salts, a surfactant and a polymerization initiator to a pH of <=6.5, and subsequently bringing the aqueous monomer solution into contact with sound waves having a frequency of >=10 kHz, until the gelation of the aqueous monomer solution containing the generated carbon dioxide in a supersaturated state is finished. |
