• English
    • العربية
  • العربية 
  • Login
  • QU
  • QU Library
  •  Home
  • Communities & Collections
  • Help
    • Item Submission
    • Publisher policies
    • User guides
    • FAQs
  • About QSpace
    • Vision & Mission
    • QSpace policies
Advanced Search
Advanced Search
View Item 
  •   Qatar University QSpace
  • Academic
  • Faculty Contributions
  • College of Engineering
  • Chemical Engineering Research
  • View Item
  • Qatar University QSpace
  • Academic
  • Faculty Contributions
  • College of Engineering
  • Chemical Engineering Research
  • View Item
  •      
  •  
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Fabrication of high flux nanofiltration membrane via hydrogen bonding based co-deposition of polydopamine with poly(vinyl alcohol)

    Thumbnail
    Date
    2018
    Author
    Wang T.
    Qiblawey H.
    Judd S.
    Benamor A.
    Nasser M.S.
    Mohammadian A.
    ...show more authors ...show less authors
    Metadata
    Show full item record
    Abstract
    The use of bio-inspired polydopamine (PDA) chemistry for membrane development has attracted increasing interest in recent years. This paper reports on the fabrication of new nanofiltration (NF) membrane with a robust and permeable barrier layer based on dopamine assisted co-deposition strategy. Hydrophilic and hydroxyl-rich polymer poly(vinyl alcohol) (PVA) was used as the key building block for co-deposition, successfully entrapping it within the self-polymerized polydopamine (PDA) matrix with stabilization through intermolecular hydrogen bonding between PVA and PDA moieties. As a result, visibly denser, thicker and more hydrophilic co-deposited layers were formed on polysulfone (PSf) substrates compared to the pure PDA layer. The surface properties of the co-deposited layers were found to be sensitive to the amount of PVA incorporated within the coating layers, while the latter positively correlated with the content of PVA in dopamine coating solution. Further crosslinking with highly electrophilic trimesoyl chloride (TMC) as a covalent linker effectively tightened the co-deposited layers, yielding NF characteristics for the crosslinked membranes with negatively charged features. The NF membranes had notably higher water permeabilities with comparable Na2SO4 rejections at low operation pressures of 2 bar when compared with commercial and several lab-fabricated NF membranes. Furthermore, the NF membrane based on high PVA content of 10 mg mL?1 showed good protein fouling resistance and long-term performance stability. - 2018 Elsevier B.V.

    DOI/handle
    http://dx.doi.org/10.1016/j.memsci.2018.02.009
    http://hdl.handle.net/10576/12155
    Collections
    • Chemical Engineering Research [‎322 ‎ items ]
    • GPC Research [‎144 ‎ items ]

    entitlement


    QSpace is a digital collection operated and maintained by the Qatar University Library and supported by the ITS department

    Contact Us | Send Feedback
    Contact Us | Send Feedback | QU

     

     

    Home

    Submit your QU affiliated work

    Browse

    All of QSpace
      Communities & Collections Publication Date Author Title Subject Type Language
    This Collection
      Publication Date Author Title Subject Type Language

    My Account

    Login

    Statistics

    View Usage Statistics

    About QSpace

    Vision & Mission QSpace policies

    Help

    Item Submission Publisher policiesUser guides FAQs

    QSpace is a digital collection operated and maintained by the Qatar University Library and supported by the ITS department

    Contact Us | Send Feedback
    Contact Us | Send Feedback | QU

     

     

    Video