Novel digital methods for the qualitative characterisation of some acid dyes applied to wool and nylon

摘要: The identification of dyes on textile fibres by assessment reflectance curves is difficult owing to the dependence spectral concentration and interference due base colour substrate itself. A method analysis proposed in which effects are reduced or eliminated use log (K/S) spectra, a function that analogous log(absorbance) as classically used solution studies.Differentiation log(K/S) spectrum suppresses interferences arising from broad background absorption fibre, so resulting profile generated property dyestuff alone. wavelengths at peaks, troughs zero crossings observed may be characterise possesses greater sensitivity than conventional K/S curve analysis. Although has been found have limited utility distinguishing between closely related acid red dyestuffs possess almost identical light-absorbing properties, it does afford rapid convenient for characterising wool nylon fibres.