Block copolymer (BCP) self-assembly has been one of attractive approach for highly size-selective and permeable membranes due to its narrow size distribution and high pore density. We produced a thermally annealed PS-b-PMMA film on a neutral substrate, where the randomly oriented PMMA cylinders were formed between two layers of perpendicular PMMA cylinders at both substrate/polymer and polymer/air interfaces. The PMMA cylinders in the BCP films processed with a selective solvent were swollen for tunable mesoporous UF membrane. The confined swelling of PMMA microdomains in PS matrix resulted in the compaction of PS matrix as well as the shrinkage of PMMA microdomains during the removal of a PMMA-selective solvent.

• 류두열(연세대학교 화공생명공학과) | Du Yeol Ryu
• 박성민(연세대학교 화공생명공학과) | Sungmin Park
• 유필진(성균관대학교 화학공학과 및 SAINT) | Pil J. Yoo
• 안형주(포항가속기연구소 생명화학소재연구팀) | HyungjuAhn