title: Wicking in twisted yarns.
abstract: This paper investigated vertical wicking in twisted yarns. A mathematical model was developed based on a capillary penetration mechanism. By using a macroscopic force balance approach, the wicking time was derived as a function of the capillary rise of the liquid. Packing of fibers in the yarn was assumed to be uniform. In order to validate our model, a series of experiments was conducted on polyester yarns. The results showed a good agreement between the experimental data and the theoretical predictions. The influence of twist level of the yarn on the capillary flow was also investigated.
authors.affiliation: Institute of Textiles and Clothing, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong, China.
authors.forename: Tao
authors.initials: T
authors.lastname: Liu
authors.forename: Ka-fai
authors.initials: KF
authors.lastname: Choi
authors.forename: Yi
authors.initials: Y
authors.lastname: Li
mesh_terms: D008962:Models, Theoretical; D033081:Shear Strength; D013314:Stress, Mechanical; D013784:Textiles