Journal of Composites Science (Jul 2020)

Effect of Nickel Doping on the Cure Kinetics of Epoxy/Fe<sub>3</sub>O<sub>4</sub> Nanocomposites

  • Maryam Jouyandeh,
  • Zohre Karami,
  • Seyed Mohammad Reza Paran,
  • Amin Hamed Mashhadzadeh,
  • Mohammad Reza Ganjali,
  • Babak Bagheri,
  • Payam Zarrintaj,
  • Sajjad Habibzadeh,
  • Poornima Vijayan P.,
  • Mohammad Reza Saeb

DOI
https://doi.org/10.3390/jcs4030102
Journal volume & issue
Vol. 4, no. 3
p. 102

Abstract

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This short communication aims to evaluate the cure kinetics of epoxy/NixFe3−xO4 nanocomposites. Differential scanning calorimetry (DSC) provided support for cure kinetics analysis based on the variation of activation energy (Eα) as a function of the extent of crosslinking reaction, α. The average values of Eα calculated based on Kissinger and Friedman methods were 59.22 and 57.35 kJ/mol for the neat epoxy, 43.37 and 48.74 kJ/mol for the epoxy/Fe3O4, and eventually 50.48 and 49.19 kJ/mol for the epoxy/NixFe3−xO4 nanocomposites. The partial replacement of Fe2+ ion sites in the Fe3O4 crystal lattice by the Ni2+ ions changed to some content the cure kinetic profile because of the fact that a lower level of energy was needed for curing by incorporation of NixFe3−xO4 into the epoxy matrix. The rate of reaction calculated theoretically adequately fitted with experimental profiles obtained in DSC experiments.

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