Figure 6.
Stress versus strain curves for films: (a) F0/0 (full squares) and F5/0 (open squares); (b) F5/0.25 (full circles), F5/0.5 (circles), F5/1 (triangles); (c) F5/2 (full triangles), F5/5 (inverted triangles) and F5/10 (lozenges).
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