By B S Gupta
The motion of friction in fibers and textiles performs a massive position in product functionality, from the new release of the fiber via to some of the methods a garment responds to put on. Friction in Textiles addresses either the worthwhile and harmful techniques of friction with chapters on fiber constitution, the assets of friction, dimension suggestions, static electrification, cut down proofing and felting, floor amendment remedies, results of friction on artificial and typical fibers and materials, and the function friction performs in cloth processing. It additionally covers the constitution and morphology of fibers and features a old point of view and destiny outlook of those stories.
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Additional resources for Friction in Textile Materials (Woodhead Publishing in Textiles)
Fiber becomes weaker and more extensible with increase in temperature . 5 8 179 194 128 24 (280) (330) (230) (185) Sources: R Meredith , S Kumar , Manufactured Fiber Fact Book , J W S Hearle, High Performance Fibers . MT: medium tenacity. is relevant as during a friction process, heat is generated, which could cause an adverse change in fiber’s mechanical properties. Another factor affecting these properties is the amount of moisture absorbed. The greater the absorption, the greater the disruption of intermolecular bonds and, therefore, the greater is the effect on mechanical properties.
An angle less than 90° means that the fluid will spread, whereas a value equal to or greater than 90° indicates that the fluid will bead up and not spread. The Wilhelmy technique, in which the force of advancing a solid into a fluid or receding it out of the fluid is measured (Fig. 12), is a useful tool for characterizing the contact angle as it yields the values of both the advancing and the receding angles. 8. The lower the value the more rapidly wettable the surface. Fibers such as polypropylene and polyethylene do not wet with aqueous fluids but do so easily with oils for which they have lower value of θ.
Measuring the surface energy of the solid and determining its composition in terms of the polar and the dispersion fractions allows one to understand whether a surface is hydrophilic or hydrophobic and is compatible with polar or non-polar fluids. 8 for a number of fibers. Clearly, the fibers such as cotton and rayon are hydrophilic and should have high attraction for polar liquids, whereas the fibers such as olefin and polyester are predominantly hydrophobic and should have greater compatibility with the non-polar liquids.