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Curing Epoxy With Polyvinylpyrrolidone (Pvp) Surface-Functionalized Mnxfe3- Xo4 Magnetic Nanoparticles Publisher



Jouyandeh M1 ; Ali JA2 ; Akbari V3 ; Aghazadeh M1 ; Paran SMR1 ; Naderi G4 ; Saeb MR3 ; 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 Resin and Additives, Institute for Color Science and Technology, P.O. Box: 16765-654, Tehran, Iran
  4. 4. Department of Polymer Processing, Iran Polymer and Petrochemical Institute, P.O. Box 14965/115, Tehran, Iran
  5. 5. Department of Surface Coating and Corrosion, Institute for Color Science and Technology, 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

Poor, Good, and Excellent are labels for thermoset composites cured at a given heating rate applied in nonisothermal differential scanning calorimetry (DSC). Here the potential of surface- and bulk-surface functionalized nanoparticles to curing with epoxy has been unraveled. Cathodic electrodeposition technique was used to yield three types of magnetic iron oxides (MIOs): MIOs, polyvinylpyrrolidone (PVP) surface-functionalized MIOs (PVP/MIOs), and PVP/MIOs in which Mn2+ cations were partially doped in (Mn-doped PVP/MIOs). The resulting nanoparticles were characterized for surface by Fourier-transform infrared spectroscopy (FTIR), for size and size distribution by field-emission scanning electron microscopy (FE-SEM), for bulk composition by X-Ray diffraction (RXD) and for supermagnetic properties by vibrating sample magnetometry (VSM). Epoxy nanocomposites containing 0.1 wt.% of PVP/MIOs and Mn-doped PVP/MIOs underwent nonisothermal DSC at four heating rates. Curing epoxy with PVP/MIOs and Mn-doped PVP/MIOs was qualified by Cure Index, which demonstrated the effect of bulk and surface modification of MIOs. Overall, Good cure was the case for epoxy nanocomposites containing Mn-doped PVP/MIOs due to accelerating effect of PVP and Mn2+ on crosslinking between epoxy and amine. © 2019 Elsevier B.V.
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