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Curing Epoxy With Electrochemically Synthesized Znxfe3- Xo4 Magnetic Nanoparticles Publisher



Jouyandeh M1 ; Ali JA2 ; Aghazadeh M1 ; Formela K3 ; Saeb MR4 ; Ranjbar Z5 ; Ganjali MR1, 6
Authors
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Authors Affiliations
  1. 1. Center of Excellence in Electrochemistry, School of Chemistry, College of Science, University of Tehran, Tehran, Iran
  2. 2. Department of Petroleum Engineering, Faculty of Engineering, Soran University, Kurdistan Region, Iraq
  3. 3. Department of Polymer Technology, Faculty of Chemistry, G. Narutowicza Str. 11/12, Gdansk University of Technology, Gdansk, 80-233, Poland
  4. 4. Department of Resin and Additives, Institute for Color Science and Technology, P.O. Box: 16765-654, Tehran, Iran
  5. 5. Department of Surface Coating and Corrosion, Institute for Color Science and Technology, P.O. Box: 16765-654, Tehran, Iran
  6. 6. Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran

Source: Progress in Organic Coatings Published:2019


Abstract

Cathodic electrodeposition (CED) was applied in synthesis of undoped and zinc (Zn) doped Fe3O4 nanoparticles. Changes in the lattice structure of nanoparticles were monitored using X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM) supported by dispersive X-ray spectrometry (EDS), and vibrating sample magnetometry (VSM). Detailed analyses explored the formation of ZnxFe3– xO4 nanoparticles with x ≈ 0.1, and relatively low coercivity and remanence of 11.71 Oe and 0.36 emu/g, respectively, demonstrating adequate superparamagnetic degree of Zn2+-doped Fe3O4 nanoparticles. Epoxy nanocomposites containing undoped and Zn2+-doped Fe3O4 were prepared at very low amount of nanoparticles (0.1 wt.% based on 100 parts by weight of epoxy) and subjected to nonisothermal differential scanning calorimetry (DSC) at different heating rates of 5, 10, 15, and 20 °C/min. Analyses based on Cure Index criterion were edivent that curability behavior of epoxy/amine systems was changed from Poor to Good state of cure by substitution of Zn2+ cations in Fe2+ sites in the Fe3O4 lattice. Nevertheless, curing state of epoxy nanocomposite was Poor at 20 °C/min regardless of nanoparticle type, which was inferred on account of progressive curing reaction of epoxy that expedited gelation and made crosslinking pertinent to diffusion. © 2019 Elsevier B.V.
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