X-ray method of the evaluation of molecular orientation in poly(ethylene terephthalate) fibres
A brief description of the theoretical principles of the X-ray evaluation of the degree of molecular orientation iff) in the amorphous regions of PET fibres was presented. The essential practical instructions were defined to enable a relatively rapidand precise determination of the fa values. The possibility of apractical utilization of the described method was illustrated with experimental results for P ET fibres differing in the degree of draft. The reliability and accuracy of these results was estimated.
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