Abstract
Effect of magnetite (Fe3O4) nanoparticles on the performance of ethylene vinyl acetate (EVA) was prepared by a two-roll mixing mill. The morphology of the nanocomposites was carried out by transmission electron microscopy (TEM). The processing characteristics and the curing behavior of the nanocomposites were analyzed by Monsanto Rheometer. TEM images of the nanocomposite showed that nanoparticles were dispersed uniformly throughout the matrix up to 7 phr of filler and thereafter the dispersion decreased with further loading of fillers. The magnetite nanoparticle in EVA matrices was found to accelerate the curing process up to 26 % compared to unfilled sample. The transport characteristics of aromatic hydrocarbon through the nanocomposite were studied by simple sorption gravimetric analysis in the temperature range 28–70 °C. The solvent uptake was minimum for composites with 7 phr of filler and increased with increasing filler content. The transport phenomenon was found to follow an anomalous mode, the activation parameters were estimated and the molecular mass was calculated using Flory-Rehner theory. The sorption data were used to estimate the enthalpy, entropy and free energy of mixing.
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