Abstract
AbstractThe effect of organic pigments on the supermolecular structure of mass coloured PA fibres has been investigated by means of small‐angle and wide‐angle X‐ray scattering methods. It has been found that the dye molecules introduced in polymer melt before the fibre is formed take part in the formation of the supermolecular structure of the fibres. The presence of these molecules causes changes of the weight fractions of the polymorphic forms of the polyamide, the increase of the crystallinity index of the fibres and the increase of the thickness of the transition layers between crystalline and amorphous regions. Changes which have been observed are dependent both on the content of pigments and on their chemical nature.
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