Under-liquid dual superlyophobic nanofibrous polymer membranes achieved by coating thin-film composites : a design principle

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

4 Scopus Citations
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Author(s)

  • Qifei Wang
  • Yang Wang
  • Baixian Wang
  • Zhiqiang Liang
  • Jiancheng Di
  • And 1 others
  • Jihong Yu

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)6382-6389
Journal / PublicationChemical Science
Volume10
Issue number25
Online published20 May 2019
Publication statusPublished - 7 Jul 2019

Link(s)

Abstract

Surfaces with under-liquid dual superlyophobicity have garnered tremendous interest because of their promising applications, but their unexplored underlying nature restricts the designed construction of such surfaces. Herein, we coated the thin-film composites with different terminal groups over the electrospun polyacrylonitrile nanofibrous membranes, which afforded the membranes excellent stability in organic solvents, as well as modulated under-liquid wetting behaviors. Among them, the representative under-liquid dual superlyophobic 4-cyan-Ph-terminated membrane could realize highly efficient separation of all types of oil/water mixtures and even emulsions. Moreover, we found that the under-liquid wetting behaviors could be classified in terms of the intrinsic water contact angle (θw). By comparing the total interfacial energy, we proved that the under-liquid dual lyophobic surfaces were thermodynamically metastable. On this basis, we could predict the θw of rough surfaces with the under-liquid dual lyophobicity in a given oil-water-solid system (e.g., 47.3-89.1° in cyclohexane-water-solid system, R = 2). This work provides a design principle for the fabrication of under-liquid dual superlyophobic surfaces, which will open potential applications in diverse fields in terms of such smart surfaces.

Research Area(s)

  • SWITCHABLE WETTABILITY, LOTUS LEAF, SURFACES, SEPARATION, SYSTEMS, TRANSPORTATION, PERFORMANCE

Citation Format(s)

Under-liquid dual superlyophobic nanofibrous polymer membranes achieved by coating thin-film composites : a design principle. / Wang, Qifei; Wang, Yang; Wang, Baixian; Liang, Zhiqiang; Di, Jiancheng; Yu, Jihong.

In: Chemical Science, Vol. 10, No. 25, 07.07.2019, p. 6382-6389.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journal

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