Relationship between fiber and yarn physical and mechanical properties in some Egyptian cotton varieties
2011
Ebrahim Al-Tnany, F.A.M.
The present study was carried out in the Laboratories of Cotton Research Technology, Research Division, Cotton Research Institute, Agricultural Research Center, Giza. The objective of the present investigation was concurred with the quantification of the contribution of fiber physical properties to yarn properties in Extra Long and Long Stable Egyptian cotton varieties. Four Extra- Long Staple commercial cotton varieties namely, Delta cottons Giza 45, Giza 70, Giza 87 and Giza 88, six Long-Staple commercial cotton varieties namely, Giza 85, Giza 89 and Giza 86 (Delta cottons) and the promising cross (Giza 89 x Giza 86), Giza 80, Giza 83, Giza 90 (Upper Egypt cottons), were used as experimental materials. Row cotton was measured for fiber characteristics. Each variety was carried out in spinning mill. Each cotton fiber material was spun into 60s yam count and 3.6 twist multiplier for tests of single yarn properties. Significant differences for fiber mechanical and physical properties fiber and yarn were observed among cotton varieties. Giza45, Giza 86 and (Giza 89 x Giza 86) gave the highest fiber quality. The best characters effecting yarn strength in Egyptian Extra Long Staple cotton varieties were maturity, fiber length, fiber strength and fineness. Fiber elongation, number of convolutions and ribbon width were the most contributions to yarn elongation. Fiber length, maturity and fineness were the most contributors to lea count strength. Uniformity Index and fiber length was the most contributions to yarn CV%.
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