Robust and elastic superhydrophobic breathable fibrous membrane with in situ grown hierarchical structures

Lei Chen, Feng Wu, Yangling Li, Yidi Wang, Liping Si, Ka I. Lee, Bin Fei

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)

Abstract

A superhydrophobic fibrous membrane (FM), which consists of elastic polyurethane (PU) and chromatic polydiacetylenes (PDA), is fabricated using an electrospinning technique, followed by short-time UV irradiation and heating treatment. The FM with fine hierarchical roughness exhibits excellent superhydrophobicity and breathability under even 300% strain of biaxial stretching. It can effectively separate the oil–sea water mixture, solely using gravity, with fascinating permeate flux (6369.4 ± 37.7 L m −2 h −1), high separation efficiency, excellent recyclability and stability against corrosive liquids. Furthermore, the FM shows good air permeability and mechanical properties. Our design starts from simple chemistry, and may offer a versatile and scalable approach to fabricate hierarchically structured superhydrophobic FMs for variously potential applications, including the cleanup of oil spills, waste water treatment, packaging of stretchable electronics and protective clothing.

Original languageEnglish
Pages (from-to)93-98
Number of pages6
JournalJournal of Membrane Science
Volume547
DOIs
Publication statusPublished - 1 Feb 2018

Keywords

  • Breathability
  • Electrospinning
  • Oil–water separation
  • Polydiacetylenes
  • Superhydrophobicity

ASJC Scopus subject areas

  • Biochemistry
  • Materials Science(all)
  • Physical and Theoretical Chemistry
  • Filtration and Separation

Cite this