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. 2019 Jun 6;4(6):9896–9903. doi: 10.1021/acsomega.9b00388

Table 3. Initial Critical Stress Intensity Factor (K1c) and Charpy Impact Strength in the Edgewise and Flatwise Direction of Neat PMMA and BC–PMMA Composites.

    impact strength (kJ m–2)
sample K1c (MPa m1/2) edgewise flatwise
neat PMMA 1.44 ± 0.14 12.7 ± 0.7 6.3 ± 0.3
composite I 0.71 ± 0.02 8.7 ± 2.5 4.7 ± 0.1
composite II 0.77 ± 0.10 9.2 ± 1.9 5.8 ± 0.6
composite III 1.72 ± 0.07 13.1 ± 0.7 7.6 ± 0.3