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Nanoemulsion-like polymersomes shuttles between water and ionic liquids for nanoreactors
소순용 한국공업화학회 2018 한국공업화학회 연구논문 초록집 Vol.2018 No.0
Self-assembly of block copolymers in selective solvents provides a means to control nanostructures. Among selective solvents, ionic liquids (ILs) are of interest as reaction media, with the possibility of replacing organic solvents. However, the implementation ILs is limited by their high viscosity. Phase transfer of IL-filled polymersomes from the IL phase to water produces a very stable kind of nanoemulsion. The phase transfer of poly(1,2-butadiene)-b-poly(ethylene oxide) and polystyrene-b-poly(ethylene oxide) polymersomes from an ionic liquid, [EMIM][TFSI], into water was used as a model system for a reversible nanoreactor system. In this talk, the issues in this reversible nanoreactor system will be discussed: (i) design a new reaction process with the IL-filled polymersomes; (ii) control the polymersome size; (iii) elucidate transport phenomena across the bilayer membrane; (iv) demonstrate a general boundary for the phase transfer of the polymersomes.
소순용(So, Soon Yong),김태호(Kim, Tae Ho),김성철(Kim, Sung Chul),홍영택(Hong, Young Taik) 한국신재생에너지학회 2010 한국신재생에너지학회 학술대회논문집 Vol.2010 No.06
An electrolyte membranes for high temperature/low humidity is a demand for the proton exchange membrane fuel cells (PEMFCs). In this work, we prepared hybrid membranes, which have novel glass content in the hydrophilic and hydrophobic part of sulfonated poly(arylene ether sulfone) (SPAES) by in-situ sol-gel synthesis of various functional silane. The effect of silicate from functional silane content on the proton conductivity, water uptake of the hybrid membranes under high temperature and low humidity was quantitatively identified. The silicate content contributed to the enhancement of not only proton conductivity, but also water retention ability for PEMFCs operation.