Colorimetric properties of wool dyed with Cochineal: Effect of Dye-bath PH

Journal: Vol.7, No.2, Spring 2014 - Article 6   Pages :   Until 

Article Code:

Peiman Valipour: Islamic Azad University of Qaemshahr Branch - Textile and Apparel Engineering Department
E. Ekrami: Amirkabir university of technology - Department of Textile Engineering
Ali Shams nateri: University of Guilan - Textile Engineering Department

Article's abstract:

In the present work an evaluation was carried out on the effect dye-bath pH and mordant type on the obtained shades and fastness properties in wool dyeing with cochineal. In this way wool samples were first mordanted with four different mordants and subsequently dyed with cochineal at different levels of dye-bath pH. Colorimetric evaluations were carried out and fastness properties of the dyed samples were assessed. Changes in chemical structure of the dye in different pH conditions was also discussed. It was found that the pH of dye-bath has a great effect on obtained shades. Based on the results, combination of dyeing in different levels of dye-bath pH along with mordanting with various mordants can considerably develop the range of obtainable hues in dyeing of wool with cochineal. The fastness properties of the dyed samples in different conditions were also studied.

Natural dye, Cochineal, Wool, Dyeing, pH, Mordant

1. A. J. Cofrancesco, Encyclopedia of chemical technology, John Wiley & Sons, New York, 1995, 784-809.#2. S. B. Ester, N. Ferreira, A. Hulme, H. McNab, A. Quye, The natural constituents of historical textile dyes, Chem. Soc Rev., 33(2004), 329-336.#3. R. B. Cabrera, Downstream processing of natural products, Carminic Acid, International university, Bremen, 2005.#4. H. S. Freeman, A. T. Peters, Colorants for none-textile applications, Elsevier Science B.V, 2000.#5. T. Bechtold, R. Mussak, Handbook of natural colorants, John Wiley & Sons, 2009.#6. G. Favaro, C. Miliani, A. Romani, M. Vagnini, Role of protolytic interactions in photo-aging processes of carminic acid and carminic lake in solution and painted layers, J. Chem. Soc., Perkin Trans. 2, 2(2002), 192-197.#7. A. Mortensen, Carotenoids and other pigments as natural colorants, Pure Appl. Chem, 78(2006), 1477-1491.#8. J. N Lies, The art and craft of natural dyeing, traditional recipes for modern use, The university of Tennessee Press, Knoxville, Tennessee, 1990.#9. D. Jenny, The craft of natural dyeing, Search Press Ltd., Spain, 1994.#10. J. Rita, Natural dyes and home dyeing, Dover publication, INC, New York.#11. S. M Mortazavi, M. Kamali Moghaddam, M. Safi, R. Salehi, Saffron petals, a by-product for dyeing of wool fibers, Prog. Color Colorants Coat., 5(2012), 75-84.#12. A. Kiumarsi, R. Abomahboub, S. M. Rashedi, M. Parvinzadeh, Achillea millefolium, a new source of natural dye for wool dyeing, Prog. Color Colorants Coat. 2(2009), 87-93.#13. T. Balazsy, D. Eastop, Chemical principles of textile conservation, John Wiley, New York 1998. 14. M. Montazer, M. Parvinzadeh, A. Kiumarsi, Colorimetric properties of wool dyed with natural dyes after treatment with ammonia, Color. Technol., 120(2004), 161-166.#15. E. Ekrami, A. Shams Nateri, Application of the ratio derivative method in quantitative analysis of samples dyed with ternary dye mixtures, Prog. Color Colorants Coat., 1(2008), 1-9.#16. A. K. R. Choudhury, Modern concept of color and appearance, Science Publishers Inc., USA, 2000.#17. R. S. Berns, Billmeyer and saltzman’s principles of color technology, John Wiley, New York, 2000

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