Influence of hematite nanorods on the mechanical properties of epoxy resin

Tijana S. Kovač, Enis S. Dzunuzovic, Milena Špírková, Phillip S. Ahrenkiel, Jovan M. Nedeljković

Abstract


Mechanical properties of nanocomposites, obtained by incorporation of fairly uniform hematite nanorods (α-Fe2O3 NRs) into epoxy resin, were stu­died as a function of the content of inorganic phase. Thorough microstructural characterization of α-Fe2O3 NRs and nanocomposites was performed using transmission electron microscopy (TEM) and atomic force microscopy (AFM). TEM measurements revealed rod-like morphology of nano-filler with uniform size distribution (8.5 nm×170 nm, diameter×length). High-magnification TEM and AFM measurements indicated agglomeration of α-Fe2O3 NRs embedded in epoxy resin. Stress at break, strain at break, elastic modulus and tensile tough­ness of nanocomposites, were compared with the data obtained for pure epoxy resin. Significant influence of nano-filler on the mechanical properties of epoxy resin, as well as on the glass transition temperature can be noticed for samples with low content of inorganic phase (up to 1 wt. %).


Keywords


nanocomposites; thermosetting resin; mechanical measurements; differential scanning calorimetry

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DOI: http://dx.doi.org/10.2298/JSC160707017B

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