Surface Treatment of Wool to Achieve Hydrophilic Fibre and the Effect on Subsequent Dyeing and Protease Treatment

Abstract:

Wool was treated with cetyltrimethylammonium bromide (CTAB) under alkaline conditions to remove the lipid layer from the fibre surface. A reduction in lipid content of 88% could be achieved resulting in a very hydrophilic fibre. The efficiency of dyeing with reactive dyes was improved. When treated with proteolytic enzymes (protease) a loss of enzyme activity occurred due to residual CTAB on the fibre surface. Residual CTAB could be removed from the fibre using solvent or anionic surfactant in acid conditions ensuring enzyme activity. Hydrophilic wool could promote a more efficient proteolytic enzyme treatment process.

• Periodical: Advanced Materials Research (Volume 441)
• Pages: 249-254
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.441.249
• Online since: January 2012
• Authors: Edward Smith, Jin Song Shen
• Keywords: Hydrophilic, Lipid, Protease, Reactive Dyes, Wool

References

[1] L.N. Jones, D.E. Rivett, The role of 18-methyleicosanoic acid in the structure and formation of mammalian hair fibres, Micron 28 (1997) 469-485.

DOI: 10.1016/s0968-4328(97)00039-5

[2] L. Ganske, H. H. Meyer, H. Deutz U. Bornscheuer, Enzyme-catalysed hydrolysis of 18-methyl eicosanoic acid-cysteine thioester, Eur. J. Lipid Sci. Technol. 105 (2003) 627-632.

DOI: 10.1002/ejlt.200300800

[3] A. Hesse, H. Thomas, H. Höcker, Zero-AOX shrinkproofing treatment for wool top and fabric part 1: glow discharge treatment, Textile Res. J. 65 (1995) 355-361.

DOI: 10.1177/004051759506500608

[4] S.J. Meade, J.M. Dyer, J.P. Caldwell, W.G. Bryson, Covalent modification of the wool fibre surface: removal of the outer lipid layer, Textile Res. J. 78 (2008) 943-957.

DOI: 10.1177/0040517507087859

[5] M. Naebe, P.G. Cookson, J.A. Rippon P.R. Brady, N. Brack, G. Van Riessen, X.G. Wang, Effects of plasma treatment of wool on the uptake of sulphonated dyes with different hydrophobic properties, Textile Res. J. 80 (2010) 312-324.

DOI: 10.1177/0040517509338308

[6] A.P. Negri, H.J. Cornell, D.E. Rivett, The modification of the surface diffusion barrier of wool, J. Soc. Dyers Colorists. 109 (1993) 296-301.

DOI: 10.1111/j.1478-4408.1993.tb01579.x

[7] D.M. Lewis, J.A. Hawkes Improvements in and relating to wool treatment, World Patent WO2007017668. (2007).

[8] J.D. Leeder, J.A. Rippon, Changes induced in the properties of wool by specific epicuticle modification, J. Soc. Dyers Colorists. 101 (1985) 11-16.

DOI: 10.1111/j.1478-4408.1985.tb00984.x

[9] R.J. Ward, H.A. Willis, G.A. George, G.B. Guise, R.J. Denning, D. J Evans, R.D. Short, Surface analysis of wool by x-ray photoelectron spectroscopy and static secondary ion mass spectrometry, Textile Res. J. 63 (1993) 362-368.

DOI: 10.1177/004051759306300609

[10] H. Nolte, D.P. Bishop, H. Höcker, Effects of proteolytic and lipolytic enzymes on untreated and shrink-resist treated wool, J. Text. Inst. 87 (1996) 212-226.

DOI: 10.1080/00405009608659069

[11] H. El-Sayed, A. Kantouch, E. Heine, H. Höcker, Developing a zero-AOX shrink-resist process for wool part 1: preliminary results, Color. Technol. 117 (2001) 234-238.

DOI: 10.1111/j.1478-4408.2001.tb00068.x

[12] P. Wang, Q. Wang, X. Fan, L. Cui, J. Yuan, S. Chen, J. Wu, Effects of cutinase on the enzymatic shrink-resist finishing of wool fabrics, Enzyme Microb. Technol. 44 (2009) 302-308.

DOI: 10.1016/j.enzmictec.2009.01.007

[13] E. Smith, M. Schroeder, G. Guebitz, J. Shen, Covalent conding of protease to different sized enteric polymers and their potential use in wool processing, Enzyme Microb. Technol. 47 (2010) 105-111.

DOI: 10.1016/j.enzmictec.2010.05.011

[14] D.M. Lewis, L.T.T. Vo, Dyeing cotton with reactive dyes under neutral conditions, Color. Technol. 123 (2007) 306-311.

DOI: 10.1111/j.1478-4408.2007.00099.x

[15] A.D. Broadbent, Basic Principles of Textile Coloration, Society of Dyers and Colourists, Bradford, (2001).

[16] Q. Zhang, E. Smith, J. Shen, D. Bishop, An ethoxylated alkyl phosphate (anionic surfactant) for promotion of activities of proteases and its potential use in the enzymatic processing of wool, Biotechnol. Lett. 28 (2006) 717-723.

DOI: 10.1007/s10529-006-9049-z

[17] R. Gibb, J. Shen, P.T. Speakman, Insect resistance brought about by chemical modificatin of wool. In : Proccedings of the 11th International Wool Research Conference, 5th-9th September 2005, Leeds, UK, pp P167CCF, 1-8.

[18] M.R. Juliá, P. Erra, J. Garciá Domínguez, M.R. Infante, The influence of a cationic surfactant on the shrink-resist treatment of wool with sodium sulphite in aqueous solution, J. Soc. Dyers Colorists. 101 (1985) 66-71.

DOI: 10.1111/j.1478-4408.1985.tb01009.x