Internal Lipid Wool Structure Modification Due to a Nonionic Auxiliary Used in Dyeing at Low Temperatures

Abstract

An analytical and microscopical study of wool fibers differently treated with a non-ionic dye auxiliary product such as Baylan NT elucidates the action mechanism of this compound in low temperature dyeing of wool. Lipids are extracted from wool samples previously treated with Baylan NT, and the compounds are analyzed quantitatively with thin layer chromatography coupled to a flame ionization detection system. Previous solubilization of free fatty acids by the Baylan treatment is considered to be the main cause of some changes in the lipid morphological structure, resulting in the release of ceramides in subsequent solvent extraction. These are found in a significantly higher amount in the extract of the wool treated with the auxiliary compound. Furthermore, the microscopical study shows higher penetration of the fluorescent dye in wool fibers treated with the auxiliary compound, thereby confirming the importance of cell membrane complex modification in the improving the dyeing characteristics of wool and permitting dyeing at low temperatures.

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References

Bayer, technical information on Baylan NT, 1989.

Box

G. E. P.

Hunter

W. G.

Hunter

J. S.

, in “Estadística para Investigadores,” Reverté, Barcelona, 1989.

Brady

P. R.

, Dyeing Wool at Low Temperature for Minimum Damage, in “Proc. 7th Wool Text. Res. Conf. Tokyo,” vol. V, 1985, pp. 171–180.

Cegarra

Riva

Prieto

, Dyeing Kinetics of Wool at Low Temperature, in 16th Congress, IFATCC, Maastrich, 1993.

Coderch

de la Maza

Soriano

Erra

Parra

J. L.

, Chromatographic Characterization of Internal Polar Lipids from Wool, J. Am. Oil Chem. Soc. 72, 715–720 (1995).

Coderch

Soriano

, Role of Treatment Medium in Degradative Wool Shrinkproofing Processes, Textile Res. J. 63, 369–370 (1993).

Coderch

Soriano

Pinazo

Parra

J. L.

Erra

, Degradative Wool Shrinkproofing Processes, Part II: Lipid Modification, Textile Res. J. 62, 704–709 (1992).

Gale

D. J.

Logan

R. I.

Rivett

D. E.

, Detection of Desmosterol in the Internal Lipids of Wool Fibres, Textile Res. J. 57, 539–542 (1987).

Harrigan

F. J.

Rippon

J. A.

, New Method for Dyeing Wool at Low Temperature, in “Proc. Text. Inst. World Conf., Sydney,” 1988, pp. 412–419.

10.

Hine

R. J.

McPhee

J. R.

, Minimizing Damage in Dyeing and Chemical Treatment of Wool, in “Proc. 3rd Internal. Wool Text. Res. Conf., Paris,” vol. 3, 1965, pp. 261.

11.

Joko

Koga

Kuroki

, The Interaction of Dyes with Wool Keratin—The Effect of Solvent Treatment on Dyeing Behaviour, in “Proc. 7th. Internat. Wool Text. Res. Conf., Tokyo,” vol. V, 1985, pp. 23–32.

12.

Leaver

I. H.

Lewis

D. M.

Westmoreland

D. J.

, Analysis of Wool Lipids Using Thin-Layer Chromatography with Flame Ionization Detection, Textile Res. J. 58, 593–600 (1988).

13.

Leeder

J. D.

, The Cell Membrane Complex and Its Influence on the Properties of the Wool Fibre, Wool Sci. Rev. 63, 3–35 (1986).

14.

Leeder

J. D.

Bishop

D. G.

Jones

L. N.

, Internal Lipids of Wool Fibres, Textile Res. J. 53, 402–407 (1983).

15.

Leeder

J. D.

Rippon

J. A.

Rivett

D. E.

, Modification of the Surface Properties of Wool by Treatment with Anhydrous Alkali, in “Proc. 7th. Internat. Wool Text. Res. Conf., Tokyo,” vol. IV, 1985, pp. 312–321.

16.

Leeder

J. D.

Rippon

J. A.

Rothery

F. E.

Stapleton

I. W.

, Use of the Transmission Electron Microscope to Study Dyeing and Diffusion Processes, in “Proc. 7th Wool Text. Res. Conf. Tokyo,” vol. IV, 1985, pp. 99–108.

17.

Lewis

D. M.

, in “Wool Dyeing,” Society of Dyers and Colourists, Bradford, UK, 1992, (a) chapter 1, pp. 35–45, (b) chapter 3, pp. 104–106.

18.

Manugistics, Inc., Statgraphics Plus v. 7 for DOS, Cambridge, MA, 1993.

19.

Nogués

Coderch

Juliá

Erra

, New Advances in Internal Lipid Composition of Wool, Textile Res. J. 58, 338–342 (1988).

20.

Rippon

J. A.

Harrigan

F. J.

, Dyeing Wool at Low Temperature—A New Approach, in “Proc. 8th Wool Text. Res. Conf. Christchurch,” vol. IV, 1990, pp. 50–59.

21.

Riva

Cegarra

Prieto

, L'ugualizzazione nella tintura della lana a bassa temperatura in presenza di prodotti ausiliari, Tincloria (6), 44–51 (1994).

22.

Riva

Cegarra

Prieto

, Färben von Wolle bei niederen Temperaturen in Gegenwart von Hilfsmitteln, Melliand Textilber. 76(1/2), 58–63 (1995).

23.

Riva

Cegarra

Prieto

, Sorption of Nonionic Auxiliary Products by Wool and Its Influence on Dyeing with Acid Dyes, J. Soc. Dyers Colour. 112, 114–116 (1996).

24.

Sandoz, technical information on Lanasan LT, 1990.

25.

Schwan

Herrling

Zahn

, Characterization of Internal Lipids from Wool, Colloid Polym. Sci. 264, 171–175 (1986).

26.

Sideris

Holt

L. A.

Leaver

I. H.

, Dye Diffusion in Wool and Selective Photomodification of Various Morphological Components of the Fibre, in “Proc. 8th Wool Text. Res. Conf. Christchurch,” vol. IV, 1990, pp. 207–216.

27.

Sideris

Holt

L. A.

Leaver

I. H.

, A Microscopical Study of the Pathway for Diffusion of Rodamine B and Octadecylrhodamine B into Wool Fibres, J. Soc. Dyers Colour. 106, 131–135 (1990).

28.

Siegel

, in “Non-Parametric Statistics for the Behavioral Sciences,” McGraw-Hill, Inc. NY, 1956.

29.

Wertz

P. W.

Abraham

Landmann

Downing

D. T.

, Preparation of Liposomes from Stratum Corneum, J. Invest. Dermatol. 87, 582–584 (1986).