Effect of a Softening Agent on Yarn Pull-out Force of a Plain Weave Fabric

Abstract

This paper describes a study of the effect of a cationic softening agent on the processes involved in pulling out a single warp yarn from a plain weave cotton fabric. In par ticular, measurements are made of the pull-out force and the corresponding yarn and fabric deformations, and these parameters are compared with those observed on un treated fabric. These forces and weave deformation data are combined using a simple model to provide estimates of the weave's shear stiffness and a single yarn's tensile stiffness in the weave. In addition these data uniquely attribute the maximum pull- out force to the rupture of one crossover and the subsequent decrease in pull-out force to a sliding friction per crossover. The conclusion is that the treatment reduces the yarn tensile "modulus" in the weave, the interyam adhesion, and the interyam sliding friction, and it increases the deformability as well as the recoverability of the fabric.

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References

De Boos, A.G. , and Finnimore, E. , Effects of Cationic Surfactants on the Bending Properties of a Woven Wool Fabric, J. Textile Inst. 75 (2), 81-91 (1984).

Evans, W.P. , Cationic Fabric Softeners, Chem. Ind., 893-903 (July 1969 ).

Elder, H.M. , Fisher, S. , and Armstrong, K. , Fabric Softness, Perception and Measurement, paper presented to the European Disposables and Non-Wovens Association, Index 81 Congress, Amsterdam, 1981.

Elder, H.M. , Fisher, S. , Armstrong, K. , and Hutchison, G. , Fabric Softness, Handle and Compression, J. Textile Inst. 75 (1), 37-46 (1984).

Flesher, D. J., Method and Apparatus for Measuring Fabric Softness, U.S. patent 3,541,843, 1970.

Graves, K.V. , Softness—Hand Study, in "Book of Papers, Int. Non-wovens and Disposables Association," 1974, pp. 206-208.

Grosberg, P. , The Role of Friction in the Mechanical Behaviour of Fabrics, in " Surface Characteristics of Fibres and Textiles, Part II," M. J. Schick , Ed., Marcel Dekker, 1975, pp. 564-574.

Kakiage, S. , A Method of Expressing Fabric Hand, J. Textile Mach. Soc. Jpn. 4, 59-61 (1958).

Kawabata, S. , Recent Developments in the Objective Measurement of Apparel Fabric Handle, Quality and Physical Properties, in "Objective Evaluation of Apparel Fabrics," R. Postle , S. Kawabata , and M. Niwa , Eds., The Textile Machinery Society of Japan, Osaka, 1983.

10.

Plummer, C. H., Method and Apparatus for Testing the Relative Softness of Sheet Materials, U.S. patent 3,151,483, 1964.

11.

Procter & Gamble Company, unpublished resuhs, Cincinnati, Ohio, 1983.

12.

Sebastian, S.A.R.D. , Bailey, A.I. , Briscoe , B.J. , and Tabor, D. , Extensions, Displacements and Forces Associated with Pulling a Single Yarn from a Fabric, J. Phys. D, Appl. Phys. (accepted for publication).

13.

Taylor, R. E., and Gorham, M., Method and Apparatus for Softness Testing, U.S. patent 3,683,681, 1972.

14.

Valko, E.I. , Derby, R.E. , Lenz , R.W. , and Shanley, E.S. , An Inquiry into the Influence of Application Conditions on Softener Efficiency, Am. Dyest. Rep. 55, 33-39 ( 1966).