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      Polymer/clay nanocomposites through multiple hydrogen-bonding interactions

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      Author
      Aydin, M.
      Uyar, Tamer
      Tasdelen, M. A.
      Yagci Y.
      Date
      2015
      Source Title
      Journal of Polymer Science, Part A: Polymer Chemistry
      Print ISSN
      0887-624X
      Publisher
      John Wiley and Sons Inc.
      Volume
      53
      Issue
      5
      Pages
      650 - 658
      Language
      English
      Type
      Article
      Item Usage Stats
      130
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      108
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      Abstract
      An 2-ureido-4[1H]pyrimidinone (UPy) motif with self-association capability (through quadruple hydrogen bonds) was successfully anchored onto montmorillonite clay layers. Polymer/clay nanocomposites were prepared by specific hydrogen bonding interactions between surface functionalized silica nanoclays and UPy-bonded supramolecular poly(ethylene glycol) or poly(É-caprolactone). The mixed morphologies including intercalated layers with a non-uniform separation and exfoliated single layers isolated from any stack were determined by combined X-ray diffraction and transmission electron microscopic measurements. Thermal analyses showed that all nanocomposites had higher decomposition temperatures and thermal stabilities compared with neat polymer. The differential scanning calorimetric data implied that the crystallinity of polymers did not show essential changes upon introduction of organomodified UPy clays.
      Keywords
      Hydrogen bonding
      Nanocomposites
      Organoclay
      Ring-opening polymerization
      Self-assembly
      Association reactions
      Calorimetry
      Nanocomposites
      Organoclay
      Polyethylene glycols
      Polymers
      Ring opening polymerization
      Self assembly
      Thermoanalysis
      X ray diffraction
      Combined X ray diffraction
      Decomposition temperature
      Differential scanning calorimetric
      Microscopic measurement
      Multiple hydrogen bonding
      Polymer/clay nanocomposites
      Quadruple hydrogen bonds
      Specific hydrogen bondings
      Hydrogen bonds
      Permalink
      http://hdl.handle.net/11693/22370
      Published Version (Please cite this version)
      http://dx.doi.org/10.1002/pola.27487
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      • Institute of Materials Science and Nanotechnology (UNAM) 1841
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