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Curing Epoxy With Polyvinylpyrrolidone (Pvp) Surface-Functionalized Nixfe3-Xo4 Magnetic Nanoparticles Publisher



Jouyandeh M1, 2 ; Ganjali MR1, 3 ; Ali JA4 ; Aghazadeh M1 ; Saeb MR5 ; Ray SS6, 7
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. Advanced Materials Group, Iranian Color Society (ICS), P.O. Box 1591637144, Tehran, Iran
  3. 3. Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
  4. 4. Department of Petroleum Engineering, Faculty of Engineering, Soran University, Kurdistan Region, Iraq
  5. 5. Department of Resin and Additives, Institute for Color Science and Technology, P.O. Box, Tehran, 16765-654, Iran
  6. 6. DST-CSIR National Centre for Nanostructured Materials, Council for Scientific and Industrial Research, Pretoria, 0001, South Africa
  7. 7. Department of Applied Chemistry, University of Johannesburg, Doornfontein, Johannesburg, 2028, South Africa

Source: Progress in Organic Coatings Published:2019


Abstract

Cathodic electrodeposition method was applied in synthesis of three types of superparamagnetic iron oxide nanoparticles (SPIONs): bare SPIONs, polyvinylpyrrolidone (PVP)-coated SPIONs (PVP-SPIONs) and Ni2+-doped PVP-SPIONs (PVP/Ni-SPIONs). The synthesized nanoparticles were well characterized by X-Ray diffraction (XRD), Fourier-transform infrared spectroscopy (FTIR), field-emission scanning electron microscopy (FE-SEM), and vibrating sample magnetometer (VSM). The potential of the modified SPIONs for curing in an epoxy/amine system having very low nanoparticle concentration was investigated in terms of Cure Index applying nonisothermal differential scanning calorimetry (DSC) at different heating rates. A shift in cure behavior from Poor to Good crosslinked epoxy networks by replacing PVP-SPIONs by PVP/Ni-SPIONs in the system was indicative of complementary role of SPIONs doping in Ni, which improved activation of surafce SPIONs towards PVP macromolecule, then thanks to its catalyzing effect enhanced epoxy ring opening due to Ni2+ cations incorporation. © 2019 Elsevier B.V.
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