 Porous polymer monolith materials can be produced by visible light-induced radical polymerization of oligocarbonate dimethacrylate, OCM2, in the presence of 1 butanol, 10 to 70 wt%. The resulting material has two distinct types of pores depending on the amount of butanol used during production. When the butanol content is low, less than 20 wt%, the material forms open interconnected pores with a specific volume of up to 2.22 cubic centimeters per G and a model pore size of up to 10 microns. When the butanol content is high, greater than 30 wt%, the material forms a structure of covalently bonded polymer globules, interparticle type pores, with free space between them representing a system of open interconnected pores. This transition occurs at a certain concentration of butanol, which can be determined experimentally. This article was authored by Roman S. Covelin, Vladimir V. Yudin, Margarita P. Schirigina, and others. We're article.tv, links in the description below.