Investigation of mechanical properties of yarns and fabrics produced naturally coloured cotton fibers

ABSTRACT INVESTIGATION OF MECHANICAL PROPERTIES OF YARNS AND FABRICS PRODUCED NATURALLY COLOURED COTTON FIBERS KALEBEK AVCIO?LU Nazan M.Sc.thesis, Textile Engineering Department Supervisor: Prof. Dr. Ali KİREÇÇİ October,2003 The starting of the naturally coloured cotton (NCC) production for improving textile industry product range and for increasing the returning to nature also play a significant role on saving the ecology. NCC are produced by crossbreeding with different featured fiber seeds on nature such as fiber colour, length, micronaire and strength or by genes transfer. In this study, the properties of naturally coloured and orijinal cotton's produced at Nazilli Cotton Research Institue (NCRI) and Kahramanmaraş Agricultural Research Institue (KARI) were investigated. These cotton samples were analysed by High Volume Instrument (HVI) and Advance Fiber Information System (AFIS). Examination results show that depending on progress seed technology, the quality of derived NCC approach to the quality of normal cotton fibers. Small quantities of cotton samples were converted to ring spinning yarn in a laboratory conditions. According to Uster Evenness and Tensorapid tester data, the parameters of the yarns which were produced by crossbred cottons were better than yarn parameter which were obtained from crossbred cottons. Colorfastness and pilling tests were performed on to the fabrics which were knitted from these yarns. It is observed that the fabrics of NCC were more resistance to fading of colour than dyed fabrics and their pilling properties were similar with white coloured knitted fabrics. Key words: Cotton, naturally coloured cotton (NCC), HVI, AFIS, Uster Evenness Tester m