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Mat. Res. vol.15 número4

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Table 1. Applied draw ratios in different stages of a multistage  drawing process. Sample 1 st  Stage draw ratio 2 nd  Stage  draw ratio 3 rd  Stage draw ratio Total drawratio 1 1.2 3 1.3 4.68 2 1.2 3.4 1.3 5.304 3 1.2 3.8 1.3 5.928 4 1.2 4 1.3 6.24
Figure 1. The optical orientation functions f 2 (θ), f 4 (θ) and f 6 (θ) as  a function of the draw ratio.
Figure 8 shows the relationships between the crystalline  and amorphous orientation factors and draw ratio
Figure 7. Variation of the tangent of the orientation angle θ and β  for hot multistage drawn PET fibers at different draw ratios.

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