| 초록 |
Preparation of porous polymers via selective removal of a sacrificial component from microphase-separated block polymer precursors has great advantages in controlling the pore size, which can be readily achieved by varying the molar mass of the sacrificial block. However, it is challenging to decrease the pore size smaller than 10 nm as the block polymer precursor with lower molar mass becomes difficult to be microphase-separated and the pore is more prone to collapse by the increased Laplace pressure. We tackled this problem by combining high χ block polymers with hyper-cross-linked pore frameworks in the polymerization-induced microphase separation (PIMS) approach. We explored copolymerization of divinylbenzene (DVB) and different styrenic monomers in the presence of polylactide macrochain transfer agent (PLA-CTA) to produce cross-linked block precursors and hyper-cross-linking of the precursors that resulted in porous polymers. |
