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This study is the first to report highly efficient production of homogeneous large-scale thin polymer films with a sponge-like porous structure via an improved phase separation method. A mixture of tetrahydrofuran and methanol, which is used as a highly volatile solvent/nonsolvent pair, is crucial to induce phase separation and thus determines the resulting structure. The obtained porous structure...
Highly ordered hexagonal patterns of a commercially available polystyrene (PS) thin film are successfully fabricated via an improved phase separation method. A mixture of chloroform (ChL) and methanol (MeOH), which is used as a solvent/non-solvent pair, exhibits strong potential and high sensitivity for producing highly ordered honeycomb films with mono-dispersed and tunable pore sizes. It is demonstrated...
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