The density of the fibers was determined according to Equation (1). From the fibers’ density, the fiber volume fractions were obtained at each fiber content following Equation (2).

where wm and wF are matrix and fiber weight fractions, respectively; ρc and ρm are the density of the composite and matrix, respectively, both measured employing a pycnometer; and the fiber density and fiber volume fraction are represented by ρF and VF, respectively.

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