화학공학소재연구정보센터
학회 한국고분자학회
학술대회 2013년 가을 (10/11 ~ 10/12, 창원컨벤션센터)
권호 38권 2호
발표분야 고분자구조 및 물성
제목 Molecular Layer-by-Layer Assembled Thin Film Composite Membranes for Seawater Desalination
초록 There is a growing need for highly-performing and durable, desalination membranes. However, the conventional technique relying on interfacial polymerization (IP) to create selective layers for desalination membranes has imposed limitations in improving membrane selectivity and antifouling owing to its lack of control over the selective layer structures. In this study, we describe a molecular layer-by-layer (mLbL) assembly to prepare high-performance membranes. Sequential deposition of reactive monomers created defect-free, crosslinked, highly-selective layers whose thickness, roughness, and chemistry are controllable at the monomer length scale. The membrane performance is tunable by adjusting the deposition cycle number, and the minimal mLbL deposition leads to a significant improvement both in salt rejection and water flux compared to the IP-based membranes. Furthermore, the well-controlled surface structure achieved by mLbL deposition further improves antifouling.
저자 이정현1, 구정은1, 이승혜2, 방준하2
소속 1한국과학기술(연), 2고려대
키워드 desalination; membrane; layer-by-layer; reverse osmosis
E-Mail leejhyyy@gmail.com