Fracture Toughness of Polypropylene-Based Particulate Composites

[ 66 ] observed an increase in the notched Izod impact energy ( Figure 15 ) from a glass bead content of 10 vol.% with no influence of the surface treatment and found also an increasing trend with several particle sizes ( Figure 16 ) [ 67 ], explained on the basis that when glass bead filled PP composites receive an impact force, the beads will induce crazes in the matrix around the surface because of stress concentration and will increase surface area to absorb the impact fracture energy.

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showed a decreasing trend of the Izod impact with the montmorillonite content [ 137 ].

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