The dyeing of different microfibrous/conventional fibrous substrates: Theoretical analysis with a focus on dye uptake prognosis

Theoretical comparative structure-property relationships and fundamental aspects of dye uptake prognosis according to various structural parameters of microfibrous/conventional fibrous materials are proposed. The key parameters of fibres geometry affecting dye uptake are evaluated. Additionally, two approaches of dye uptake prognosis connected with different types of arrangement of amorphous and crystal zones in cross-section of microfibres and conventional fibres, i.e. the assumptions about homogeneous and non-homogeneous supramolecular structure are used, and then influence of the above-mentioned zones on dye uptake is specifically evaluated by means of comparative coefficient. The current verification obtained as summarized interaction of acid and disperse dyes with polyamide fibrous substrate, shows a considerable improvement in prediction of dye uptake when the above-mentioned assumptions have been applied.