thus, at 20 °C, the modulus increased from 2.55 GPa, for
composites with untreated fibers, to 2.93 and 3.2 GPa,
respectively, for composites made with MRPS- and
APS-treated fibers and at 150 °C, a temperature higher
than the Tg of the epoxy matrix, the corresponding
moduli increased from 0.58 to 0.72 and 0.90 GPa, respectively