Abstract
The Young’s modulus of polymer nanocomposites is predicted using a numerical approximation system (NAS) model based on fully exfoliated nanoparticles, random orientation (with platelet and cylindrical forms), and nanoparticles of specific shapes (e.g., square platelets, nanotubes, and spherical). The thickness of interface between the polymer matrix and nanoparticles which plays an important role in reinforcing mechanism of nanocomposites is also employed in NAS model as a crucial parameter. The modulus of interface region on the surface of nanoparticle is another significant parameter which is taken into account through mathematical modeling procedure of NAS model as it may indicate the manner by which the polymer matrix bonds to the surface of nanoparticles. NAS model proposes a general formulation through which the Young’s modulus of a nanocomposite could be easily predicted, while the involving parameters change due to the shape of nanoparticle (e.g., platelet, cylindrical or spherical). The final predications of NAS model are validated by comparing them with the results of tensile tests for polyamide (PA)/Cloisite 30B nanocomposite system and the results reported in other similar studies on the mechanical properties of polymer nanocomposites.
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Sharifzadeh, E., Ghasemi, I., Karrabi, M. et al. A new approach in modeling of mechanical properties of nanocomposites: effect of interface region and random orientation. Iran Polym J 23, 835–845 (2014). https://doi.org/10.1007/s13726-014-0276-1
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DOI: https://doi.org/10.1007/s13726-014-0276-1