Effect of Fe3+–MMT nanocomposite content on thermal, mechanical and water resistance behavior of PVP/amylose films

Novel nanocomposite films based on amylose (AM) and Fe3+–montmorillonite (Fe3+–MMT) in the matrix of poly(vinyl pyrrolidone) (PVP) were fabricated using a solution casting method. X-ray diffraction indicated that an ion exchange process occurred between Fe3+–MMT and PVP/AM. Thermogravimetric analysis and differential scanning calorimetry results hinted to PVP/AM films forming a more stable network through the dispersion of Fe3+ cations. An increase in the loading of Fe3+–MMT improved the hydrophilic properties of PVP/AM films, which lead to the high degree of resistance against the water absorption. Mechanical properties of PVP/AM films influenced by the uniform dispersion of Fe3+–MMT in the polymer network established strong covalent interactions between PVP/AM and Fe3+–MMT. This interaction not only improved the mechanical properties of the films, but also enhanced the thermal stability of them through the facilitation of the MMT dispersion within the polymer matrix. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.

Abdollahi R.1 , Orang N.S.2 , Afkhami F.A.3 , Khandar A.A.3 , Mahmoudi G. 4 , Hayati P.5 , Zubkov F.I. 6
Springer Verlag
  • 1 Department of Physical Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, Iran
  • 2 Department of Chemical Engineering, Technical Engineering Faculty, Islamic Azad University, Ahar, Iran
  • 3 Department of Inorganic Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, 51666-16471, Iran
  • 4 Department of Chemistry, Faculty of Science, University of Maragheh, Maragheh, 55181-83111, Iran
  • 5 Persian Gulf Science and Technology Park, Nano Gostaran Navabegh Fardaye Dashtestan Company, Borazjan, Iran
  • 6 Organic Chemistry Department, RUDN University, Miklukho-Maklaya Str. 6, Moscow, 117198, Russian Federation
Ключевые слова
Amylose; Fe3+–MMT nanocomposite; Glass transition temperature (Tg); PVP; PVP/AM film; Thermal stability
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