Underwater superoleophobic cellulose/electrospun PVDF-HFP membranes for efficient oil/water separation

Farah Ejaz Ahmed, Boor Singh Lalia, Nidal Hilal, Raed Hashaikeh

Research output: Contribution to journalArticle

86 Citations (Scopus)

Abstract

Electrospun polyvinylidene fluoride-co-hexafluoropropylene (PVDF-HFP) nanofibers have been modified with cellulose regenerated from ionic liquid solution. Three-dimensional impregnation of cellulose provides greater control over porosity, pore size, wettability as well as the mechanical and thermal properties of the electrospun membrane. Formation of smaller pores with narrower pore size distribution is achieved as the fibers are coated with cellulose matrix. At 15. wt.% cellulose, the mechanical properties of electrospun PVDF-HFP are enhanced as the elastic modulus increases from 17. MPa to 54. MPa and the tensile strength also improves from 5.5. MPa to 8.6. MPa. The resulting membrane exhibits superhydrophilicity and underwater supoeroleophobicity and is successfully applied for selective separation of water from oil with efficiencies up to 99.98%.

Original languageEnglish
Pages (from-to)48-54
Number of pages7
JournalDesalination
Volume344
DOIs
Publication statusPublished - 1 Jul 2014
Externally publishedYes

Fingerprint

Cellulose
fluoride
cellulose
Oils
membrane
Membranes
Water
oil
Pore size
Ionic Liquids
Mechanical properties
water
wettability
elastic modulus
Nanofibers
tensile strength
Ionic liquids
Impregnation
Wetting
mechanical property

Keywords

  • Cellulose in ionic liquid
  • Control of pore size
  • Electrospinning
  • Oil-water separation
  • Superoleophobic

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Mechanical Engineering
  • Chemistry(all)
  • Materials Science(all)
  • Water Science and Technology

Cite this

Underwater superoleophobic cellulose/electrospun PVDF-HFP membranes for efficient oil/water separation. / Ejaz Ahmed, Farah; Lalia, Boor Singh; Hilal, Nidal; Hashaikeh, Raed.

In: Desalination, Vol. 344, 01.07.2014, p. 48-54.

Research output: Contribution to journalArticle

Ejaz Ahmed, Farah ; Lalia, Boor Singh ; Hilal, Nidal ; Hashaikeh, Raed. / Underwater superoleophobic cellulose/electrospun PVDF-HFP membranes for efficient oil/water separation. In: Desalination. 2014 ; Vol. 344. pp. 48-54.
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