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      Property enhancement in unsaturated polyester nanocomposites by using a reactive intercalant for clay modification

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      Author
      Şen, S.
      Gündem, H. B.
      Ortaç, B.
      Date
      2013
      Source Title
      Journal of Applied Polymer Science
      Print ISSN
      0021-8995
      Electronic ISSN
      1097-4628
      Publisher
      Wiley
      Volume
      129
      Issue
      6
      Pages
      3247 - 3254
      Language
      English
      Type
      Article
      Item Usage Stats
      129
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      Abstract
      Polymeric nanocomposites were synthesized from unsaturated polyester (UPE) matrix and montmorillonite (MMT) clay using an in situ free radical polymerization reaction. Organophilic MMT was obtained using a quaternary salt of coco amine as intercalant having a styryl group making it a reactive intercalant. The resultant nanocomposites were characterized via X-ray diffraction and transmission electron microscopy. The effect of increased nanofiller loading on the thermal and mechanical properties of the nanocomposites was investigated. All the nanocomposites were found to have improved thermal and mechanical properties as compared with neat UPE matrix, resulting from the contribution of nanolayer connected intercalant-to- crosslinker which allows a crosslinking reaction. It was found that the partially exfoliated nanocomposite structure with an exfoliation dominant morphology was achieved when the MMT loading was 1 wt %. This nanocomposite exhibited the highest thermal stability, the best dynamic mechanical performance and the highest crosslinking density, most probably due to more homogeneous dispersion and optimum amount of styrene monomer molecules inside and outside the MMT layers at 1 wt % loading. Copyright © 2013 Wiley Periodicals, Inc.
      Keywords
      Clay
      Composites
      Mechanical properties
      Polyesters
      Thermal properties
      Transmission electron microscopy
      Permalink
      http://hdl.handle.net/11693/20806
      Published Version (Please cite this version)
      http://dx.doi.org/10.1002/app.39055
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      • Institute of Materials Science and Nanotechnology (UNAM) 1775
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