An analysis of morphological, geometrical and mechanical indices of dogs‘ hair fibres and their influence on the properties of textile materials

Author, Institution: Jolita Rusinavičiūtė, Kaunas University of Technology

Science Area, Field of Science: Technological Sciences, Materials Engineering – 08T

Scientific Supervisor: Assoc. Prof. Dr. Audronė RAGAIŠIENĖ (Kaunas University of Technology, Technological Sciences, Materials Engineering – 08 T).
Scientific Adviser: Dr. Daiva MILAŠIENĖ (Kaunas University of Technology, Technological Sciences, Materials Engineering – 08 T).

Dissertation Defence Board of Materials Engineering Science Field:
Prof. Habil. Dr. Arvaidas GALDIKAS (Kaunas University of Technology, Technological Sciences, Materials Engineering – 08T) – chairman;
Prof. Dr. Saulius GRIGALEVIČIUS (Kaunas University of Technology, Technological Sciences, Materials Engineering – 08T);
Prof. Habil. Dr. Silvija KUKLE (Riga Technical University, Technological Sciences, Materials Engineering – 08T);
Dr. Remo MERIJS MERI (Riga Technical University, Technological Sciences, Materials Engineering – 08T);
Assoc. Prof. Dr. Daiva MIKUČIONIENĖ (Kaunas University of Technology, Technological Sciences; Materials Engineering – 08T).

The doctoral dissertation is available at the library of Kaunas University of Technology (K. Donelaičio St. 20, Kaunas, Lithuania)

Annotation:
Various of protein fibres are widely used in textile industry. Woollen yarn with dogs‘ hair fibres has become more and more popular in Lithuania and the world, but there are still not enought comparative analysis about the properties of different breed dog hair, geometrical, mechanical and thermal indices of woollen yarn, textile materials. Thus, studies of the development, production and various properties of such textile materials are not only relevant but also very significant. It was established that there are different types of medulla inside the cross-section of dogs‘ hair which can have a direct impact on the thermal properties of fibers and textile materials made from it. In general, this research has proven that the spinning system is suitable for woollen yarns from the blends of sheep wool and different dog breeds‘ hair. It was found that woollen yarn with different percentage amount of dogs‘ hair fibres in the blend are suitable for single jersey knits. Not only the row material or it‘s geometrical indices has the main influence on therman-functional properties of knits‘ with dogs‘ hair but the structure of knits‘ and the amount of air therein too. It was found that the animal breed, fiber quality indexes and the percentage amount of fibre in the blend influence the thermal properties of the felts.