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Nonisothermal Cure Kinetics of Epoxy/Znxfe3- Xo4 Nanocomposites Publisher



Jouyandeh M1 ; Karami Z1 ; Hamad SM2 ; Ganjali MR1, 3 ; Akbari V4 ; Vahabi H5, 6 ; Kim SJ7 ; Zarrintaj P8 ; Saeb MR4
Authors

Source: Progress in Organic Coatings Published:2019


Abstract

Epoxy nanocomposites containing electrochemically synthesized Fe3O4 and Zn-doped Fe3O4 (Zn-Fe3O4) were prepared and their cure behavior and kinetics were discussed by the aid of nonisothermal differential scanning calorimetry and isoconversional methods. The results of differential and integral isoconversional methods indicated that addition of Fe3O4 nanoparticles to epoxy decreases the activation energy of the epoxy nanocomposite with respect to the unfilled epoxy due to the steric hindrance effect as a consequence of aggregation of magnetic Fe3O4 nanoparticles. By contrast, Zn-Fe3O4 nanoparticles facilitated crosslinking of epoxy due to the autocatalytic reaction of OH groups on the surface of nanoparticles with epoxy groups. © 2019 Elsevier B.V.
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