Journal of Nanomaterials / 2010 / Article / Tab 2

Research Article

Environmental Degradation and Durability of Epoxy-Clay Nanocomposites

Table 2

Initial mass gain and final mass loss for exposure to UV radiation and condensation.

MaterialProcessing Flexure modulus (GPa) Fracture toughness (MPa m )

Neat epoxyNone 2.70 ± 0.05 0.94 ± 0.05

Hand mix + ultrasonication 3.59 ± 0.11 1.23 ± 0.07
Epoxy-clayHand mix + high-shear dispersion 3.69 ± 0.04 1.31 ± 0.04
Nanocomposite14 hour mechanical mixing 3.50 ± 0.06 1.29 ± 0.02
14 hours mechanical + ultrasonication 3.75 ± 0.10 1.17 ± 0.03
14 hours mechanical + high-shear dispersion 3.94 ± 0.20 1.34 ± 0.05

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