Effect of temperature on the application of dye extracted from carrot on some selected fabrics

Abstract

Dye was successfully extracted from carrot using soxhlet apparatus with acidified methanol as the solvent. The dye was characterized using UV – Spectroscopy and fourier Transform Infrared spectroscopy (FT-IR). The molar extinction coefficient was determine using Beer-lambert equation as 3.08 (LMol^-1cm^-1) x 10⁴. The aromatic C = C bond and the methyl group of the dye structure were indicated at 1651 cm^-1 and 2952cm^-1 respectively from the FT-IR. The dye was used to colour Wool, Nylon, Polyester and Cotton fabrics showing better substantivity for wool and nylon fabrics. The fastness properties also is shown to improve with increasing dyeing temperature. Fabrics dyed at 100^oC showed better fastness properties for all the fabrics. However for wool and polyester fibres dyeing at 70^oC will be adequate while dyeing of nylon at 50 ^oC is adequate if only light fastness property is to be considered.

Key words: Natural dyes, Temperature effect, fastness properties