VASILICA POPESCU, IRINA CRINA ANCA SANDU,GABRIEL POPESCU<br>FTIR Spectroscopic, Colorimetric and Statistic Evaluations <br>of Textile Materials Dyed with Crude Extract Obtained <br>by Macerating Pomegranate Peels

VASILICA POPESCU, IRINA CRINA ANCA SANDU,GABRIEL POPESCU
FTIR Spectroscopic, Colorimetric and Statistic Evaluations
of Textile Materials Dyed with Crude Extract Obtained
by Macerating Pomegranate Peels

Abstract:

Crude extract obtained by macerating pomegranate peels can dye textile materials. The final purpose of the process of pomegranate peels maceration in the presence of glacial acetic acid was to extract pigments that can dye various textile materials: wool, polyamide, cotton and cellulose acetate. Dyeing of these materials started with pre-mordanting with citric acid (for 15 min) and continued with dyeing in itself at 100oC for 60 min. The crude extract obtained at the end of the process of pomegranate peel maceration. The acid pH of the dyeing liquor generated by the presence of acetic acid, unseparated from the extracted pigments constituted an advantage for wool and polyamide dyeing, but it was not favorable for cotton and cellulose acetate dyeing. The pigments presence on the dyed textile materials has been proved by FT-IR spectroscopic analysis. Quantitative evaluations consisted in colorimetric measurements and statistic analysis of textile materials dyeing capacity (using the total difference of color, DE*). Keywords: crude extract, peel pomegranate, FT-IR, color measurements, statistical analysis

Issue: 2016, Volume 67, Issue 10

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