Evaluation of Color Difference, Whiteness, and Luster of Multifilament Polyester Woven Fabrics

Abstract

This paper investigated the color difference, whiteness, and luster of multifilament polyester woven fabrics based on weave pattern, weft density, dye concentration, and interaction between super bright warp yarns and semi dull weft yarns. Plain, weft rib (2/2), sateen (1/4)(3) and steep twill(2/3) was selected as weave pattern. Warp yarn type and its count, and warp density were kept constant. Measurement of whiteness was conducted on pre-treated un-dyed fabric samples. Color difference and luster of samples was evaluated after dying in warp and weft direction separately. Plain and weft rib (2/2) weaves showed the lowest and highest value of whiteness and luster respectively. Interaction between weave pattern and application of super bright yarn as warp was obtained in these parameters. The luster and whiteness of samples was decreased by increase in weft density. The trend of luster and color difference in weft and warp direction by increasing the weft density was not similar and was dependent on dye concentration and effectiveness of super bright warp yarns according to fabric pattern. Woven fabrics with steep twill (2/3) and weft rib (2/2) revealed the highest values of color difference compared with plain and sateen (1/4)(3) in warp direction. In weft direction, plain weave showed the lowest value of color difference and all three others had almost the same level of color difference. Moreover, the visual assessment was organized based on twenty-two observers in standard condition and D65 light source.