Superspreading‐Based Fabrication of Asymmetric Porous PAA‐g‐PVDF Membranes for Efficient Water Flow Gating

One-step fabrication of asymmetric poly(vinylidene fluoride) (PAA-g-PVDF) membranes is reported by using the superspreading liquid layers on immersed hydrogel surfaces and confined phase inversion process that occurs at the oil/hydrogel interface. Such PAA-g-PVDF membranes possess asymmetric micro/nanopores and wettability, endowing these membranes efficient water flow gating and excellent recycling property for long-term practical applications. As a service to our authors and readers, this journal provides supporting information supplied by the authors. Such materials are peer reviewed and may be re-organized for online delivery, but are not copy-edited or typeset. Technical support issues arising from supporting information (other than missing files) should be addressed to the authors. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.