Cure Kinetics of Samarium-Doped Fe3O4/Epoxy Nanocomposites Articles uri icon

authors

  • Jouyandeh, Maryam
  • Ganjali, Mohammad Reza
  • Mehrpooya, Mehdi
  • Abida, Otman
  • Jabbour, Karam
  • Rabiee, Navid
  • Habibzadeh, Sajjad
  • Mashahdzadeh, Amin Hamed
  • GARCIA PE√ĎAS, ALBERTO
  • Stadler, Florian J.
  • Saeb, Mohammad Reza

publication date

  • January 2022

issue

  • 1

volume

  • 6

International Standard Serial Number (ISSN)

  • 2504-477X

abstract

  • (copyright) 2022 by the authors. Licensee MDPI, Basel, Switzerland.To answer the question 'How does lanthanide doping in iron oxide affect cure kinetics of epoxy-based nanocomposites?', we synthesized samarium (Sm)-doped Fe3O4 nanoparticles electrochemically and characterized it using Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-Ray analysis (EDX), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy analyses (XPS). The magnetic particles were uniformly dispersed in epoxy resin to increase the curability of the epoxy/amine system. The effect of the lanthanide dopant on the curing reaction of epoxy with amine was explored by analyzing differential scanning calorimetry (DSC) experimental data based on a model-free methodology. It was found that Sm3+ in the structure of Fe3O4 crystal participates in cross-linking epoxy by catalyzing the reaction between epoxide rings and amine groups of curing agents. In addition, the etherification reaction of active OH groups on the surface of nanoparticles reacts with epoxy rings, which prolong the reaction time at the late stage of reaction where diffusion is the dominant mechanism.

keywords

  • curing reaction; epoxy coating; lanthanide; samarium (sm)-doped fe3o4 nanoparticles