Hyungju Ahn
포항공과대학교 기계공학과 · 공학
안형주 교수의 연구실은 블록코폴리머를 이용한 나노구조 제어와 그 응용에 중점을 두고 있습니다. 특히 PS-b-PMMA 계 블록코폴리머의 상전이 거동과 자가조립 거동을 정밀하게 제어하여, 균일한 나노포일을 갖는 초미세여과막을 개발하고 있습니다. 이는 금 나노입자 등의 크기 선택적 분리에 응용될 수 있으며, 고도로 정제된 나노소재의 설계와 응용을 목표로 합니다.
표시된 성과는 수집된 데이터 기준으로 산출되며, 일부 차이가 있을 수 있습니다.
Nanoporous structures were obtained by the self-assembly of polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) block copolymers (BCP) where, in thick films, cylindrical microdomains were oriented normal to the substrate and air interfaces, and in the interior of the films, the microdomains were randomly oriented. Continuous nanopores that penetrated through the film were readily produced by a simple preferential swelling of the PMMA microdomains. The confined swelling and rapid contraction of P
The phase behavior of polystyrene-b-poly(methyl methacrylate) (PS-b-PMMA) copolymers of various molecular weights has been studied by using small-angle X-ray scattering (SAXS) and depolarized light scattering (DLS). The empirical Flory χ, determined from scattering intensity profiles for a fully disordered PS-b-PMMA copolymer, was shown to behave differently depending on temperature range. χ was described mostly by enthalpic contribution at higher temperatures, but a dominant entropic contributi
