This paper reports an experimental study wherein the quantity and distribution of oily contaminants present in flame-resistant fabrics (FR) after contamination and decontamination was determined using radiotracer analysis and scanning electron microscopy. The experimental variables were fabric type, laundry treatment, and number of contamination/decontamination cycles. Laundry treatments involving a pre-wash product were the most effective in removing oil from all FR fabrics regardless of the number of contamination/ decontamination cycles. Accumulation of oily contaminants was noted after five contamination/ decontamination cycles regardless of the fabric type or laundry treatment. FR cotton/nylon retained the most residual oil for all laundry treatments. No oil remained in the interior of the aramid, viscose, and nylon fibers, but rather remained on the surface so that it was removed easily during decontamination. A significant quantity of oil was located in the interior of the cotton fibers, making it difficult to remove during decontamination.
Baitinger, W.F., Wash durability of FR cotton, in "Performance of Protective Clothing", Vol. 4 (ASTM STP 1133), McBriarty, J. P., and Henry, N. W. (eds), American Society for Testing and Materials, Philadelphia , 1992, pp. 766-774.
2.
Simpson, H.N. , and Phelps, M.A., How Glycerine, Hand Lotions and Baby Oil Affect Fire Retardant Fabrics, Am. Dyest. Rep., 64(8), 69-70 (1975).
3.
Kissa, E., Evaluation of detergency, in "Detergency: Theory and Technology" , Cutler, W. G., and Kissa, E. (eds), Marcel Dekker, New York, 1987, pp. 1-89.
4.
Shebs, W.T., Radioisotope techniques in detergency, in "Detergency: Theory and Technology", Cutler, W. G., and Kissa, E. (eds), Marcel Dekker, New York, 1987, pp. 125-191.
5.
Watt, I.M., "The Principles and Practice of Electron Microscopy", Cambridge University Press, New York, 1985.
6.
Obendorf, S.K. , and Klemash, N.A., Electron Microscopical Analysis of Oily Soil Penetration into Cotton and Polyester Cotton Fabrics, Textile Res. J., 52(7), 434-442 ( 1982).
7.
Breen, N.E., Durnam, D.J., and Obendorf, S.K., Residual Oily Soil Distribution on Polyester Cotton Fabric after Laundering with Selected Detergents at Various Wash Temperatures, Textile Res. J., 54(3), 198-204 (1984).
8.
Obendorf, S.K. , Namaste, Y.M.N., and Durnam , D.J., A Microscopical Study of Residual Oily Soil Distribution on Fabrics of Varying Fiber Content, Textile Res. J., 53(6), 375- 383 ( 1983).
9.
Obendorf, S.K. , Electron Microscopical Analyses of the Distribution of Oily Soils on Fabrics after Laundering - A Review, J. Coated Fabrics, 13(1), 24-34 (1983).
10.
Obendorf, S.K. , Electron Microscopical Study of Soiling and Soil Removal, Text. Chem. Color., 20(5), 11-15 (1988).
11.
Obendorf, S.K. , Microscopy to Define Soil, Fabric and Detergent Formulation Characteristics that Affect Detergency: A Review, AATCC Review, 4(1), 17-23 (2004).
12.
Webb, J.J., and Obendorf, S.K., Detergency Study of the Synergism between Oily and Particulate Soil on Polyester Cotton Fabric, J. Am. Oil Chem. Soc., 65(8), 1357-1364 (1988).
13.
Weglinski, S.A., and Obendorf , S.K., Soil Distribution onFabric after Laundering, Text. Chem. Color., 17(10), 196-199 (1985).
14.
Chi, Y.S. , and Obendorf, S.K., Detergency of Used Motor Oil from Cotton and Polyester Fabrics, J. Surfactants Deterg., 2(1), 1-11 (1999).
15.
Crown, E.M. , Feng, A., and Xu, X., How Clean is Clean Enough? Maintaining Thermal Protective Clothing Under Field Conditions in the Oil and Gas Sector, Int. J. Occup. Saf. Ergo. 10(3), 247-254 ( 2004).
16.
Mettananda, C.V.R. , "Effects of Oily Contamination and Decontamination on Combustion and Flame Resistance of Thermal Protective Textiles, Doctoral Thesis, University of Alberta, 2009 , unpublished.
17.
Aatcc, "Dimensional Changes in Automatic Home Laundering of Woven and Knit Fabrics", 135-1995, American Association of Textile Chemists and Colorists, Research Triangle Park, NC, 1995.
18.
Cgsb, "Conditioning Textile Materials for Testing", CAN/ CGSB-4.2 No. 2-M88, Canadian General Standards Board, Ottawa, ON, 1988.
19.
Lange, H., Physical chemistry of cleansing action, in "Solvent Properties of Surfactant Solutions, Shinoda, K. (ed.), Marcel Dekker, New York, pp. 117-188 (1967).
20.
Stevenson, D.G., A Microscopic Study of Oiled Textile Fibres Immersed in Aqueous Media, J. Textile Inst., 42(4), 194-206 (1951).
21.
Kissa, E., Kinetics of Oily Soil Release. Textile Res. J., 41(9), 760-767 (1971).
22.
Catlett, M.S. , Giuffria, R., Moore, A.N., and Rollins, M.L., Microscopical Observations on the Contents of the Cotton Fiber Lumen, Textile Res. J., 21(12), 880-886 (1951).
23.
Schindler, W.D. , and Hauser, P.J., Flame-retardant finishes, in " Chemical Finishing of Textiles", Woodhead Publishing, Cambridge, 2004, pp. 98-116.
24.
Horrocks, A.R. , Developments in Flame Retardants for Heat and Fire Resistant Textiles - The Role of Char Formation and Intumescence. Polym. Degrad. Stabil., 54, 143-154 (1996).
25.
Kandola, B.K. , and Horrocks, A.R., Heat Release Measurements for Non-flaming Barrier Fabrics Using Thermopile and Oxygen Consumption Techniques. Polym. Int., 49, 1210-1215 (2000).
26.
Horrocks, A.R. , An Introduction to the Burning Behaviour of Cellulosic Fibres, J. Soc. Dyers Colour., 99(7/8), 189-197 (1983).
27.
Bowers, C.A. , and Chantrey, G., Factors Controlling the Soiling of White Polyester Cotton Fabrics Part I: Laboratory Studies, Textile Res. J., 39(1), 1-11 (1969).
28.
Weatherburn, A.S., and Bayley, C.H., The Soiling Characteristics of Textile Fibers - Part III: The Effect of Twist on Soil Retention, Textile Res. J., 27(5), 358-361 ( 1957).
