NOPR Collection:

Yarn hairiness versus quality of cotton fibres

2013-10-01T16:42:12Z

Title: Yarn hairiness versus quality of cotton fibres Authors: Krupincova, Gabriela Abstract: The influence of yarn construction parameters (yarn count and yarn twist) and quality of cotton fibres in terms of HVI parameters on yarn hairiness has been studied. The Uster Tester 4 and Zweigle G 567 are used for yarn hairiness investigation. The statistical methods (correlation analysis and principal component analysis PCA) are applied to verify significance of yarn hairiness parameter in yarn quality control process. The proposed PCA model can be effectively used as a qualitative criterion during yarn quality inspection. The predictive model for yarn hairiness estimation based on fibre and yarn parameters has been successfully designed using the regression analysis and can be used for prediction of yarn hairiness, expressed by hairiness index H. Page(s): 223-229

Extraction of rubiadin dye from Swietenia mahagoni and its dyeing characteristics onto silk fabric using metallic mordants

2013-10-02T16:38:31Z

Title: Extraction of rubiadin dye from Swietenia mahagoni and its dyeing characteristics onto silk fabric using metallic mordants Authors: Haque, M Ahsanul; Khan, G M Arifuzzaman; Razzaque, S M Abdur; Khatun, Khodeza; Chakraborty, Ashok Kumar; Alam, M Shamsul Abstract: Rubiadin dye extracted from Swietenia mahagoni has been applied onto silk fabric and its dyeing properties are evaluated using metallic mordants MgCl₂ and FeSO₄as a function of dye concentration, dyeing temperature, dyeing time and pH. It is observed that the dye exhaustion significantly increases in case of FeSO₄as compared to that in case of MgCl₂. Colour shades of dyed silk fabrics are found to be dark dull red, dark bright yellow and too dark red for unmordanted, MgCl₂ mordanted and FeSO₄ mordanted dyeing respectively. The colour strength of FeSO₄mordanted dyed fabric is found to be 3.19 times higher than unmordanted and 1.11 times higher than MgCl₂ mordanted dyed fabrics. Dyed fabrics show good fastness properties. FeSO₄mordanted dyed fabric shows more resistance against light, washing, rubbing and perspiration as compared with the other mordanted and dyed fabrics. Page(s): 280-284

Sound insulation property of three-dimensional spacer fabric composites

2013-10-01T16:42:20Z

Title: Sound insulation property of three-dimensional spacer fabric composites Authors: Haijian, Cao; Kejing, Yu; Kun, Qian Abstract: Three-dimensional composites with different pile height, face-sheet thickness and pile structure have been manufactured in order to study the relationship between the sound insulation properties and the structures of the 3D composites. Methods of reverberation-anechoic chambers are used to study the sound insulation property. The results show that three-dimensional spacer fabric composites have excellent sound insulation properties. The sound insulation property increases with the increase in pile height and face-sheet thickness. The sound insulation property of the ‘8’-shaped pile structures is found to be better than that of ‘88’-shaped structure. The results would offer important guidance function on structure optimization and property analysis of three-dimensional spacer fabric composites. Page(s): 304-308

Studies on camel hair - merino wool blended knitted fabrics

2013-10-09T16:43:01Z

Title: Studies on camel hair - merino wool blended knitted fabrics Authors: Sharma, Anjali; Pant, Suman Abstract: Effect of blending camel kid hair with merino wool on performance of resultant yarn and fabric has been studied. Camel hair (CH) has been blended with merino wool (M) in three different ratios, viz. 25:75, 75:25 and 50:50 on khadi hand spinning system. Knitted fabric samples are then prepared on circular hand knitting machine. Properties of yarn and knitted fabric are also evaluated. It is found that the blending of merino wool with camel hair improves fineness and strength of yarn. Performance of CH75:M25 knitted fabric is found better in terms of strength and warmth, whereas CH25:M75 fabric shows higher abrasion resistance and better knitting performance and hand. Page(s): 317-319