Abstract
Friction between fibers inside yarns is generally important for determining the physical behavior of textiles. The tendency of cellulosic fibers to slide in a yarn directly influences the extent of fuzz formation during abrasive treatment. This paper presents a test method to determine the slipping behavior of fibers in a yarn as a function of yarn twist. Different kinds of cellulosic fibers tested with the method include lyocell, modal, viscose, and cotton. To obtain a quantitative measure, a mathematical model is established to estimate the force for fibers slipping in a yam as a function of two basic fiber parameters. μ and α: μ is the coefficient of friction of fibers in a yam and α describes fiber adherence. As a result of the calculations, these fibers can be characterized by their frictional properties in a yarn.
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