Special HIPS blends prepared to evaluate the toughening model

8 Special HIPS blends prepared to evaluate the toughening model 

9 Comparison of the behavior of speciai HIPS biends with modei predictions 

We note further from Fig. 13.12 that fully 40% of the small-particle size distribution falls below the critical particle-size estimate of Dc = 0.93 pm, reducing the effective fraction of the particle volume fraction from 0.22 to 0.13. This results in a substantial upper yield stress of 24 MPa, as Fig. 13.11(c) shows. However, once an effective craze network has developed the actual craze-flow stress of this blend drops to 20.5 MPa, in keeping with expectations. 

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