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      Surface modification of electrospun polyester nanofibers with cyclodextrin polymer for the removal of phenanthrene from aqueous solution

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      Author(s)
      Kayaci, F.
      Aytac, Z.
      Uyar, Tamer
      Date
      2013
      Source Title
      Journal of Hazardous Materials
      Print ISSN
      0304-3894
      Publisher
      Elsevier
      Volume
      261
      Pages
      286 - 294
      Language
      English
      Type
      Article
      Item Usage Stats
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      Abstract
      Surface modified electrospun polyester (PET) nanofibers with cyclodextrin polymer (CDP) were produced (PET/CDP). CDP formation onto electrospun PET nanofibers was achieved by polymerization between citric acid (CTR, crosslinking agent) and cyclodextrin (CD). Three different types of native CD (α-CD, β-CD and γ-CD) were used to form CDP. Water-insoluble crosslinked CDP coating was permanently adhered onto the PET nanofibers. SEM imaging indicated that the nanofibrous structure of PET mats was preserved after CDP surface modification process. PET/CDP nanofibers have shown rougher/irregular surface and larger fiber diameter when compared to untreated PET nanofibers. The surface analyses of PET/CDP nanofibers by XPS elucidated that CDP was present on the fiber surface. DMA analyses revealed the enhanced mechanical properties for PET/CDP where PET/CDP nanofibers have shown higher storage modulus and higher glass transition temperature compared to untreated PET nanofibers. The surface area of the PET/CDP nanofibers investigated by BET measurements showed slight decrease due to the presence of CDP coating compared to pristine PET nanofibers. Yet, it was observed that PET/CDP nanofibers were more efficient for the removal of phenanthrene as a model polycyclic aromatic hydrocarbon (PAH) from aqueous solution when compared to pristine PET nanofibers. Our findings suggested that PET/CDP nanofibers can be a very good candidate as a filter material for water purification and waste treatment owing to their very large surface area as well as inclusion complexation capability of surface associated CDP. © 2013 Elsevier B.V.
      Keywords
      Cyclodextrin polymer
      Electrospinning
      Nanofibers
      Phenathrene
      Polyester
      Permalink
      http://hdl.handle.net/11693/20769
      Published Version (Please cite this version)
      http://dx.doi.org/10.1016/j.jhazmat.2013.07.041
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