Tensile properties of polyester/cotton blended yarns

The Journal of The Textile Institute, 2019

In this study, the physical-mechanical properties of ring spun, ring compact, rotor and air-vortex yarns were investigated. The study was carried with yarn having linear densities of 24.4 tex and 36.7 tex, which were then converted to woven fabrics. The ring spun yarns have higher values of strength but also with higher strength irregularities. Extraordinarily low hairiness was observed in air-vortex yarns due to its unique yarn formation technique. The deviation rate (DR) of yarns have correlation with the mass spectrogram of respective yarns obtained from USTER Tester 5. Rotor and air-vortex yarns exhibited higher coefficient of friction. The woven fabrics made from ring spun yarns exhibited higher tensile and tear strength with higher elongation at break. The fabrics made from air-vortex yarns have very good pilling grade due to less protruding fibres on their surface and good structural integrity.

2019

The change in the tensile strength properties of 45 Nepolyester/cotton(40/60) blended yarn after dyeing process hasbeen investigated. The tensile strength properties of the grey yarnhave also been tested for comparison. In the blended yarn, thepolyester component is first dyed with disperse dye followed bythe dyeing of cotton component with reactive dye. After dyeingboth of the polyester and cotton parts, wax based softener is usedfor finishing. It is observed that there is a significant drop intenacity of the yarn along with the gain in elongation-at-breakafter the dyeing in comparison of grey yarn. The tensile strengthproperties are investigated at three stages, viz immediately afterdyeing of polyester component, after dyeing of cotton componentand then after the application of softener. It is found that the dropin tenacity of the yarn after dyeing of cotton part is much higherthan the drop found immediately after polyester dyeing. The valueof elongation-at-break has increased ver...

Global Journal of Research In Engineering, 2018

The demand of blended yarn has been increasing gradually due to some of its distinctive properties. It is a challenging task for textile technologists to ensure the appropriate blend composition and blending ratio for the developments of the spinning industry. We should reduce dependency from natural fiber as their properties are not adequate in advancing textile industry and so they are used together in blends with synthetic fibers to compensate their limitations. The aim of this research work was to study the comparative properties of cotton/viscose and cotton/modal blended yarn. Cotton was blended with viscose and modal fibers separately in 50/50 ratio. Blending was carried out at draw frame, and finally 31/1Ne blended yarns were produced. The yarn properties such as unevenness, imperfection, hairiness, single yarn strength (cN/tex) and bundle yarn strength (CSP) were tested, and their comparative results were analyzed. Cotton/modal 50/50 blended yarn showed significantly better ...

Trends in textile engineering & fashion technology, 2019

Cotton is a cool, soft, comfortable and is the principal clothing fiber of the world. Cloths made of this fiber absorb and release perspiration quickly, thus allowing the cloth to "breath." The advantages of polyester over cotton fibers are its strength, brightness, easy-care, low price, consistency in quality and availability. But it has low moisture regain (0.4%) as compared to cotton (8%). There is no perfect fiber that contains all the qualities of cotton and polyester mentioned above. In this context, blending is the technique to combine fibers which emphasizes the good qualities and minimizes poor qualities of the fibers. In blends of polyester/cotton, the fibers provide crease recovery, dimensional stability, tensile strength, abrasion resistance, moisture absorption, drape ability, etc. Different blend ratios of P/C have been considered for experiment, i.e., 100% cotton, CVC (60% cotton, 40% polyester) and PC (50% cotton and 50% polyester). In this work, we studied the yarn characteristics with several P/C blend ratios of 30/s Ne. Here, the properties of blended ring spun yarns are compared with the same of 100% cotton yarn and the results are discussed in terms of the following quality parameters: Mass irregularity (CV% and U%), Thick, Thin & Naps (IPI: Imperfection Index), CSP, single yarn strength and Hairiness.

In this study, a series of blended yarns consisting of 80:20 bamboo/cotton, 67:33 bamboo/cotton, 50:50 bamboo/cotton, 33:67 bamboo/cotton, 20:80 bamboo/cotton, 80:20 bamboo/polyester, 67:33 bamboo/polyester, 50:50 bamboo/polyester, 33:67 bamboo/polyester, and 20:80 bamboo/polyester were produced from blends consisting of bamboo/cotton and bamboo/ polyester. Besides these, 100% bamboo, 100% cotton, and 100% polyester were also produced. All the yarns were produced with two levels of twist per meter (TPM) 76 and 90. It can be found that the yarn unevenness characteristic was affected by the blended ratio of cotton, polyester, and regenerated bamboo fiber. The drop in tenacity of blended yarns in comparison to the constituents is generally lower which is attributed to the elongation at break of the yarns. The variability in tenacity in respect of 100% polyester yarn is quite high in comparison with other yarns. The yarn elongation at break of bamboo/cotton-blended yarns is found to be lower than those of bamboo/polyester-blended yarns. The variability in the work of rupture is found to be lower for bamboo/cotton-blended yarns. Yarn friction values of the yarns noticed that polyester exhibits the highest value at the TPM of 76. The yarn torque values from which it is noticed that 100% polyester yarns spun with the TPM of 76 have a higher torque in both the wet and dry states. The quality characters of yarn depend upon the ratio of bamboo, cotton, and polyester in the blend ratio.

2009

This paper reports the tensile characteristics of cotton, polyester, viscose and polyester/viscose (P/V) ring and rotor yarns of different linear densities and blend proportions in dry and wet conditions. An experimental setup has been fabricated, which can be attached with the tensile tester to study the tensile characteristics of yarns under water. The tenacity of yarns is found to be higher in wet condition as compared to that in dry condition for all the yarns, except the viscose yarns where tenacity drops in wet condition. The increase in tenacity in case of cotton is much higher than that in case of polyester and P/V blended yarns. In case of polyester and cotton, the breaking elongation of yarns increases while in viscose and viscose-rich P/V blended yarns, the breaking elongation decreases in wet condition. In viscose and viscose-rich P/V blended ring-spun yarns, the increase in initial modulus is found to be very high, whereas in the case of polyester and cotton, there is moderate increase in initial modulus of yarns in wet condition. In case of cotton ring-spun yarns, there is very high level of increase in work of rupture in wet condition. Yarn fineness significantly affects the tensile characteristics.

2009

The effect of yarn linear density, twist density and blend proportion on bulk density, tenacity, breaking extension, work of rupture, flexural rigidity, hairiness and friction of jute-hollow polyester blended yarns made on conventional jute spinning system has been studied. Box and Behnken experimental statistical design has been used to study the individual and interactive effects of independent variables. It is observed that the bulk density and coefficient of static friction increase initially with the increase in yarn linear density as well as twist. After reaching the maximum value, further increase in these parameters decreases the properties. In case of all jute yarn, the maximum tenacity reaches at 195 twists/m and 145 tex. However, for 60% jute blended yarn, these values are 210 twists/m and 155 tex. The minimum breaking extension attains at 135 tex with 220 twists/m for all jute yarn and 185 tex with 220 twists/m for 60% jute blended yarn. The specific work of rupture decr...

2004

The influence of twist factor and rotor speed on the properties of polyester ring and rotor yams spun from polyester fibres of circular and trilobal cross-sections has been studied. The results show that the fibre profile plays a key role in determining the mechanical and surface properties of all-polyester, polyester-viscose and polyester-cotton yarns, as evidenced by the fact that both ring and rotor yams spun with trilobal polyester fibres have lower tenacity, higher breaking extension, more twist liveliness, lower work of rupture and higher flexural rigidity. Furthermore, lesser yam-to-metal friction , higher dye pick-up and low hairiness can be obtained for blended yams having polyester fibres of non-circular cross-section. Both twist factor and rotor speed strongly affect all yarn properties and the behaviour is similar for all the yarns.

International Journal of Scientific Research and Management, 2018

The cardinal objective of blending is to combine fibers which emphasizes good quality and minimizes poor quality. Jute is a natural fiber popularly known as the golden fiber of Bangladesh. It is one of the cheapest and strongest natural fibers and is considered the fiber for the future. Polyester is a manufactured product which tends to be very resilient, quick drying, resistant to biological damage such as mold and mildew, easy to wash and able to hold forms well. Although polyester is often maligned as a textile, it has many useful applications. The following study is an experimental research on how blending of Polyester with Jute behaves a single yarn manufactured using jute yarn manufacturing machineries. Tossa Jute of B grade and Polyester of 1.4 Denier & 32 mm staple length were chosen for the blending. The blending was performed at the 2 nd Draw Frame stage of jute manufacturing system and blending ratio of jute and polyester fibers is 80:20. Count of Jute blended sliver and yarn after each stage was measured and recorded. The present work is concerned with the investigation of physical properties of manufactured jute blended yarns. Tests were conducted on blended yarn to find out Count, Twist per Inch (TPI), Strength, Quality Ratio Moisture Regain, Moisture Content, Hairiness, Percentage of Fibers in the final blended yarn etc.

2016

The failure behaviour of polyester/viscose blended ring, rotor and air-jet spun yarns has been studied on the basis of fibre failure coefficient, yarn broken end configuration and failure zone length. The failure behaviour of spun yarns under warping process is simulated in the dynamic tensile tester. The tensile failure behaviour of ring, rotor and air-jet yarns are found to be different owing to their difference in fibre consolidation mechanism. The yarn failure is observed to be more and more dominated by fibre slippage once moving from ring to rotor and finally to air-jet yarns. The study also reports mathematical modeling of spun yarn failure behaviour during warping process. The mathematical model indicates that the spun yarn failure is non-linearly related to yarn structural parameters.