Nanoclay dispersion in a miscible blend: an assessment through rheological analysis

  • Mahdi Ghelichi
  • Nader Taheri Qazvini
  • Seyed Hassan Jafari
  • Hossein Ali Khonakdar
  • Uta Reuter
Original Paper

Abstract

In this study, miscible polymer blend nanocomposite of Poly(ethylene oxide)/Poly(methyl methacrylate), (PEO/PMMA), with sodium montmorillonite (Na+-MMT) clay were prepared at a constant concentration of nanoparticles via different solution intercalation methods. The resultant nanocomposites possess different structure and dispersion of Na+-MMT clays which are assessed through a combination of transmission electron microscopy (TEM) and X-ray diffraction (XRD). The rheology of the neat blend and two different layered silicate nanocomposites were investigated using linear viscoelastic measurements with a parallel plate rheometry at small strain amplitudes. It was found that regardless of the extent of dispersion, the storage and loss modulus increased by incorporating the nanoparticles into the matrix of PEO/PMMA. Moreover, at low frequencies the rheological response of the nanocomposite in which layered silicates benefit from a better dispersion becomes relatively invariant with frequency and represents a mediocre solid-like behavior in comparison to the nanocomposite in which the nanoparticles are intercalated or agglomerated.

Keywords

Poly(ethylene oxide)/Poly(methyl methacrylate) Rheology Nanoclay Dispersion Visco-elastic behavior 

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  • Mahdi Ghelichi
    • 1
  • Nader Taheri Qazvini
    • 2
  • Seyed Hassan Jafari
    • 1
  • Hossein Ali Khonakdar
    • 3
  • Uta Reuter
    • 4
  1. 1.Department of Polymer, School of Chemical Engineering, College of EngineeringUniversity of TehranTehranIran
  2. 2.Department of Polymer, School of Chemistry, College of ScienceUniversity of TehranTehranIran
  3. 3.Iran Polymer and Petrochemical InstituteTehranIran
  4. 4.Leibniz Institute of Polymer Research DresdenDresdenGermany

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