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Abstract
The purpose of this paper was to determine the unknown concentration of dichlortriazinyl reactive dyes, namely Reactive Yellow 22 and Reactive Blue 163, in dyed cotton fabric. The samples of cotton fabric were dyed individually with each dye as well as with a mixture of two dyes. The unknown concentrations of dyes were determined by measuring the corresponding reflectance values of dyed fabric samples and then using the relation between the concentration and reflectance values of the samples. The method set by Kubelka and Munk was used. The accuracy and repeatability of the concentrations determination were calculated by the statistical processing of the data obtained by measurements. Relative errors of individual determination of Reactive Yellow 22 and Reactive Blue 163 were 3.66% and 5.94% respectively. Relative errors in determination of Reactive Yellow 22 and Reactive Blue 163 in a mixture were 3.47% and 3.19% respectively. The results showed that reflectance spectrophotometry can be successfully used as the method for concentration determination of Reactive Yellow 22 and Reactive Blue 163 in dyed cotton fabric and can therefore be applied as the shade control method in dyeing.
Highlights
U tabeli 5 su dati podaci koji se odnose na pripremu uzorka bojenog smešom boja
Podaci koji se odnose na uzorke celuloznog materijala bojene bojom Reactive Yellow 22 Table 3
Podaci koji se odnose na uzorke celuloznog materijala bojene bojom Reactive Blue 163 Table 4
Summary
Izvod Cilj ovog rada bio je odrediti nepoznate koncentracije dve reaktivne boje: Reactive Yellow 22 i Reactive Blue 163 na obojenom pamučnom materijalu. Uzorci pamučnog materijala su bojeni pojedinačno, svakom bojom, a onda i smešom boja. Nepoznata koncentracija boja je određivana merenjem odgovarajućih vrednosti refleksije uzoraka bojenog pamučnog materijala tehnikom refleksiometrije i primenom Kubelka–Munkove jednačine. Tačnost i reproduktivnost određivanja koncentracija su izračunate statističkom obradom dobijenih podataka. Relativne greške pojedinačnih određivanja Reactive Yellow 22 i Reactive Blue 163 su iznosile 3,66 i 5,94% respektivno. Relativne greške određivanja Reactive Yellow 22 i Reactive Blue 163 u smeši su iznosile 3,47 i 3,19%, redom. Ključne reči: refleksometrija, reaktivne boje, pamučni materijal, koncentracija boje
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