| 초록 |
Porous polymers can be classified into three classes based on their pore size ranging from micro- (＜ 2 nm), meso- (2 - 50 nm) and macropore (＞ 50 nm). Hierarchically porous polymers (HPPs) contain more than two kinds of pores at different length scales and can provide high surface area and accelerated adsorption rate as diffusion of the target substance would be facilitated through the porous space at the larger length scale. We report a methodology to construct HPPs containing micropores within the framework of three-dimensionally continuous mesopores by combining hypercrosslinking with polymerization-induced microphase separation (PIMS). Copolymerization of vinylbenzyl chloride, styrene and divinylbenzene in the presence of polylactide-containing macro-chain transfer agent via reversible addition-fragmentation chain transfer (RAFT) mechanism was explored, and the resulting crosslinked block polymer precursor was hypercrosslinked to produce the target HPP. |
