Soiling Properties of Wool Fabrics

Author:

Benisek L.1,Crawshaw G.H.1

Affiliation:

1. International Wool Secrctariat, Technical Centre, Ilkley, England

Abstract

Chemical degradative processes used for shrink proofing treatment improve significantly the soiling properties of wool, presumably by smoothening the fiber surface and increasing its hydrophilic properties. The improvement depends on the level of shrink resistance. Resin-shrinkproofing treatments often impair the good natural soiling properties of wool, depending on the surface energy, hardness, and zeta potential of the resin. Bleaching wool by hydrogen peroxide also improves significantly its resistance to soiling and ease of soil release in wash ing. Reductive bleaching has a slightly lower beneficial effect. Flat-setting treatments with reducing agents also slightly improve the soiling properties of wool fabrics. In order to obtain the optimal soil release properties in washing, the pH of wool and the washing liquor should be > 7. The oil content of wool fibers has an important influence on soiling, increasing soil retention and improving soil release in washing or dry-cleaning. From the point of view of soiling, wool garments should not have more than 0.5% oil content. Due to their strongly hydrophobic properties, water-repellent agents, with the exception of fluorocarbons, significantly impair soiling, desoiling, and soil redeposition in washing. Block copolymers of fluorocabrons and polyethyleneoxides are the only repellents which do not impair the good, natural soiling properties of wool. In fact, they possess a certain degree of soil repettency.

Publisher

SAGE Publications

Subject

Polymers and Plastics,Chemical Engineering (miscellaneous)

Reference51 articles.

1. The Rôle of the Disulphide Bond in Reactions which render Wool Non‐felting

2. The Chemical Anti-Felting Reaction for Wool

3. ASTM D583-63, Water Resistance of Textile Fabrics, 1968 Book of ASTM Standards, American Society for Testing and Materials, Philadelphia, 1968, p. 126.

4. Soiling Properties of Wool Fabrics

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1. The Finishing of Wool Tops with Bunte Salt Polyamide Polymers;Journal of the Society of Dyers and Colourists;1976-11

2. The Effect of Crosslinking Conditions on the Wet-Soiling Behavior of Cotton;Textile Research Journal;1973-08

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4. Service Soiling of Wool, Man-Made Fiber, and Blended Carpets;Textile Research Journal;1972-08

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