Biomimetic Patterned Ultrafiltration Membranes for Enhanced Antifouling
내오염에 특화된 생체모사 패턴을 도입한 패턴형 한외 여과 분리막
- Subject Biomimetic , Patterned membrane , Ultrafiltration , Antifouling
- Publisher 서강대학교 일반대학원
- Adviser 이종석
- Issued 2019
- Awarded 2019. 2
- Thesis degree 석사
- Major 일반대학원 화공생명공학과
- URI entity http://www.dcollection.net/handler/sogang/000000064012
- UCI I804:11029-000000064012
- Language 영어
- Rights 서강대학교 논문은 저작권보호를 받습니다.
Abstract
We present a topological modification approach to achieve ultralow fouling of ultrafiltration (UF) membranes by realizing the sharkskin-mimetic (Sharklet) surface patterns. This biomimetic patterned UF membranes are prepared by modified phase separation micromolding. The Sharklet-patterned UF membrane exhibited remarkably high biofouling resistance compared to the topologically modulated membranes with regular simple patterns as well as the flat counterpart. Such a high biofouling resistance is attributed to the unique pattern geometry of the Sharklet pattern, which significantly inhibits flux declination. Furthermore, under dynamic flow conditions, the intricate Sharklet geometry induces a complex surface flow by symmetrically generating a secondary flow perpendicular to the primary flow, forming periodic inflow and outflow along the pattern. The reinforced primary and secondary flows of the Sharklet pattern may further contribute to its excellent fouling resistance by suppressing bacterial accumulation.
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