TY - JOUR
T1 - Curing epoxy with polyvinylpyrrolidone (PVP) surface-functionalized NixFe3-xO4 magnetic nanoparticles
AU - Jouyandeh, Maryam
AU - Ganjali, Mohammad Reza
AU - Ali, Jagar A.
AU - Aghazadeh, Mustafa
AU - Saeb, Mohammad Reza
AU - Ray, Suprakas Sinha
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2019/11
Y1 - 2019/11
N2 - 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.
AB - 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.
KW - Cure Index
KW - Electrodeposition
KW - Epoxy nanocomposites
KW - Magnetic nanoparticles
UR - http://www.scopus.com/inward/record.url?scp=85071842462&partnerID=8YFLogxK
U2 - 10.1016/j.porgcoat.2019.105259
DO - 10.1016/j.porgcoat.2019.105259
M3 - Article
AN - SCOPUS:85071842462
SN - 0300-9440
VL - 136
JO - Progress in Organic Coatings
JF - Progress in Organic Coatings
M1 - 105259
ER -