Abstract
Small-angle neutron scattering (SANS) and optical birefringence measurements were used to investigate a wide range of macromolecular orientation in hot stretched and injection moulded polystyrene samples. These two techniques show similar trends even though each is sensitive to different forms of macromolecular orientation. The hot stretched samples are found to deform nonaffinely in relation to the external drawing (for draw ratios higher than 3). The cold condition injection moulded samples showed more orientation than the hot condition injection moulded samples, which were not birefringent even though they did have a residual orientation as seen by SANS. SANS is evidently sensitive to factors controlling orientation at extremes for which birefringence is not.
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