Cure Kinetics of Samarium-Doped Fe3O4/Epoxy Nanocomposites

To answer the question “How does lanthanide doping in iron oxide affect cure kinetics of epoxy-based nanocomposites?”, we synthesized samarium (Sm)-doped Fe3O4 nanoparticles electrochemically and characterized it using Fourier-transform infrared spectroscopy (FTIR), X-ray powder diffraction (XRD), field emission scanning electron microscopy (FE-SEM), energy dispersive X-Ray analysis (EDX), transmission (TEM), photoelectron analyses (XPS). The magnetic particles were uniformly dispersed epoxy resin to increase curability epoxy/amine system. effect dopant on curing reaction with amine was explored by analyzing differential calorimetry (DSC) experimental data based a model-free methodology. It found that Sm3+ structure crystal participates cross-linking catalyzing between epoxide rings groups agents. In addition, etherification active OH surface reacts rings, which prolong time at late stage where diffusion is dominant mechanism.