Mesoporous polymer systems based on divinylbenzene copolymers modified with linear rubbers

•Modification of divinylbenzene copolymers by linear rubbers.•Synthesis of sorbents with controlled fractional composition of pores.•The characteristics of the porous structure are determined by methods BET, BJH, DFT.•The porous system of the sorbents contains three groups of pores of certain sizes.•The polymer matrix of the polyisobutylene-based copolymer has 3D skeletal structure.