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  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Characterization Techniques for Thin Polyamide Layer of TFC RO Membrane Prepared via Interfacial Polymerization

2014년 9월 4일 16시 17분 26초
POLY.O-9 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 11시 : 40분
고분자화학 - New Trends in Polymer Chemistry
저자 및
박상희, 백경열*
한국과학기술연구원(KIST) 물질구조제어연구단, Korea
The polyamide-based reverse osmosis (RO) membrane is generally developed on UF membrane via interfacial polymerization is a well-known technique using two kinds of immiscible monomers, MPD and TMC. It is difficult to control the performance of obtained RO membrane because of the random reaction forming the cross-linked polyamide layer on porous ultrafiltration (UF) membrane. Also, the ultrathin polyamide layer (~ 100 nm) is too thin to analyze the physical and chemical properties of the layer by conventional techniques. We need to develop the new technique for obtaining the correct results with the exact interpretation. Here, we demonstrated that a variety of polyamide-based membranes including various performances were prepared with difference concentrations of monomers. SEM analysis was used to confirm the surface morphology of TFC RO membranes, and AFM analysis was used to obtain the surface area and thickness of the polyamide selective layer. Contact angle analysis was also carried out to confirm the water wettability of the polyamide selective layer. The mechanical properties of the polyamide selective layer were measured by nanoindenter equipped with a Berkovich diamond tip. Water flux and salt rejection of TFC RO membranes were measured under 16 bar at 25℃ using cross-flow type test equipment.