Analysis of Different Breed of Protein Fibres and their Influence on Mechanical Properties of Woollen Blend Yarns

Abstract

The aim of this research was to analyse possibilities of making different woollen blend yarns with sheep's wool and dog's hair fibers and to investigate geometrical and mechanical properties of these yarns. In this paper sheep's wool and dogs' hair fibers were compared one with other in different geometrical (fibre surface, length, diameter, linear density) and mechanical (breaking tenacity, elongation at break, breaking toughness) properties. It was estimated that the sheep's and the dog's fibers are visually very different, they have various types of scales, also most of the dog's hair have channels inside them. On the next stage of this work the woollen blend yarns were made by mixing the wool of German Blackface sheep with different breed (English Spaniel, Poodle, Yorkshire Terrier) dogs' hair 15 %, 25 % and 35 %. After evaluating the linear density and mechanical properties of woollen blend yarns, it was estimated that influence of fiber composition in the yarns on these properties is different. Different values of the investigated properties are mostly influenced by spinning system of these yarns. The condenser spinning system affects inequality and unpredictable properties of woollen blend yarns. Also, obtained results depend on the breed of protein fibers, hairy surface, hollow structure and bending rigidity of fiber, the technological process or even compatibility of used devices.

The influence of zinc-methionine bioplex supplementation to pregnant and lactating sheep on selected wool parameters

“…Wool is a natural raw material obtained mainly from sheep, but also from alpacas, llamas, some breeds of goats and rabbits. The production and quality of wool are affected by numerous factors that include breed, sheep genetics, age of the animal, part of animal body the wool is collected from, color of wool fibers, intervals between successive shears, and some environmental and management factors (Reis and Sahlu, 1994;Sahoo and Soren, 2011;Holman and Malau-Aduli, 2012;Khan et al, 2012;Ragaišienė et al, 2016). One of the main factors affecting the quantity and quality of wool produced is proper nutrition of the animals.…”

“…These processes involve the contribution of 3/4 of methionine supplied to the organism. Methionine is considered an indispensable amino acid for animals, and it is known that it cannot be synthesized to a degree that would be sufficient to maintain the proper growth and development of animals (Reis, 1989;Reis and Sahlu, 1994;Sahoo and Soren, 2011;Khan et al, 2012;Bin et al, 2017). In addition to its role in wool production, methionine is also involved in oxidative stress reduction; its deficiency is linked to hepatic pathology, intestinal epithelium growth suppression and growth performance disorders (Bauchart-Thevret et al, 2009;Bin et al, 2017).…”