Abstract
Macroporous silica gel was employed for layer-by-layer (LbL) film preparation of isotactic- (it-) poly(methyl methacrylate) (PMMA) and syndiotactic- (st-) poly(methacrylic acid) (PMAA). The extraction of macroporous silica gel by fluorine hydride resulted in macroporous replica particles, confirmed by SEM. The further extraction of st-PMAA from their particles gave the macroporous replica consisting of porous it-PMMA films. The obtained porous it-PMMA films as macroporous replica particles showed the re-incorporation of st-PMAA. Therefore, the structure of the porous it-PMMA film was stabilized by the macroporous particle structure, although they did not include substrate. The physically crosslinked network structures maintained the molecular porous structures, without a chemically crosslinked reaction.
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