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

    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 (US)
    Pages (from-to)48-54
    Number of pages7
    JournalDesalination
    Volume344
    DOIs
    StatePublished - Jul 1 2014

    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

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

    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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    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{\%}.",
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    AU - Hilal, Nidal

    AU - Hashaikeh, Raed

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