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Sudershan Dhamija - One of the best experts on this subject based on the ideXlab platform.
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influence of polyester Fibre Fineness and cross sectional shapes on tensile properties of yarns
Research journal of textile and apparel, 2011Co-Authors: V K Kothari, Sudershan Dhamija, Rajeev K. VarshneyAbstract:Mechanical properties of 100% polyester and polyester-viscose (P/V) blended yarns produced from polyester Fibres which vary in denier and cross-sectional shape have been analyzed. It is observed that Fibre Fineness and cross-sectional shape play a significant role in the translation of Fibre properties to the respective yarn properties. As the Fibre linear density decreases, Fibre strength translation efficiency increases. In the case of trilobal Fibre, translation efficiency is observed to be lower, but yarn breaking elongation is higher in comparison to the corresponding circular Fibre. Scalloped oval Fibre contributes more towards yarn strength and elongation versus the equivalent circular and tetraskelion Fibres. In the P/V blended form, a decrease in yarn tenacity does not affect Fibre Fineness, but is substantially influenced by changes in the Fibre profile. Contribution of broken viscose Fibres (comparatively weaker component) at the point of actual breaking of yarn, i.e. Z-value, is altered depending on the polyester Fibre profile, which is higher in trilobal and scalloped oval Fibres in comparison to the corresponding circular ones, but the role of Fibre linear density in this regard is rendered insignificant.
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Effect of polyester Fibre Fineness and cross‐sectional shape on physical characteristics of yarns
Journal of The Textile Institute, 2011Co-Authors: Sudershan Dhamija, V K Kothari, Rajeev K. VarshneyAbstract:Polyester Fibres with different geometrical features such as Fineness, length and cross‐sectional shapes were spun on a ring frame in all‐polyester and 67:33 polyester:viscose (P:V) blended schemes using viscose Fibres of same lengths. Along with circular Fibres, three other non‐circular Fibres, namely trilobal, scalloped oval and tetrakelion, were investigated. Yarn physical parameters such as diameter, diameter variation, Fibre packing fraction, surface twist angle variation, unevenness and imperfections were observed. It was found that an increase in the Fibre linear density increases the yarn diameter, diameter percent coefficient of variation (CV%), mass CV% and surface twist angle CV%. It was observed that non‐circular Fibres all have their yarn CV% higher than the corresponding circular ones. The trend of the yarn packing fraction decreased with the linear density of the constituent Fibre. The degree of yarn packing in non‐circular Fibres was observed to be lower than that in the corresponding circ...
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Effect of polyester Fibre Fineness and cross-sectional shape on physical characteristics of yarns
Journal of the Textile Institute, 2011Co-Authors: Sudershan Dhamija, V K Kothari, Rajeev K. VarshneyAbstract:Polyester Fibres with different geometrical features such as Fineness, length and cross‐sectional shapes were spun on a ring frame in all‐polyester and 67:33 polyester:viscose (P:V) blended schemes using viscose Fibres of same lengths. Along with circular Fibres, three other non‐circular Fibres, namely trilobal, scalloped oval and tetrakelion, were investigated. Yarn physical parameters such as diameter, diameter variation, Fibre packing fraction, surface twist angle variation, unevenness and imperfections were observed. It was found that an increase in the Fibre linear density increases the yarn diameter, diameter percent coefficient of variation (CV%), mass CV% and surface twist angle CV%. It was observed that non‐circular Fibres all have their yarn CV% higher than the corresponding circular ones. The trend of the yarn packing fraction decreased with the linear density of the constituent Fibre. The degree of yarn packing in non‐circular Fibres was observed to be lower than that in the corresponding circ...
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influence of polyester Fibre Fineness and cross sectional shape on low stress characteristics of fabrics
Journal of The Textile Institute, 2011Co-Authors: Rajeev K. Varshney, V K Kothari, Sudershan DhamijaAbstract:The paper presents the results of the investigations made on 2/1 twill fabrics made from polyester and polyester‐blended yarns to appreciate the role of constituent polyester Fibre Fineness and profiles in deciding their handle, appearance and performance in garment manufacturing operations. Three different polyester Fibre profiles, trilobal, scalloped oval and tetrakelion, along with circular were chosen and linear density of circular Fibre was varied for this investigation. The objective measurements were performed with Fabric Assurance by Simple Testing (FAST) system for evaluation of handle and tailoring performance by extracting information about deformations (i.e. compression, extensibility, bending and shear) in the fabrics. Fabrics’ physical and mechanical parameters were shown to be altered by Fibre form (Fineness and cross‐sectional shapes). Higher Fibre denier leads to higher values of all four mechanical characteristics and results in higher formability. The influence of cross‐section is very ...
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a study on thermophysiological comfort properties of fabrics in relation to constituent Fibre Fineness and cross sectional shapes
Journal of The Textile Institute, 2010Co-Authors: R K Varshney, V K Kothari, Sudershan DhamijaAbstract:The present study reports the effect of linear densities and profiles of polyester Fibres on the physiological properties of their fabrics. Four different polyester Fibre Finenesses along with microdenier and four cross-sectional shapes (circular, scalloped oval, tetrakelion and trilobal) were selected to produce two sets of 2/1 twill fabrics; one composed of 100% polyester and the other 67:33 P/V blends. In studying the thermophysiological component of the clothing comfort, heat, air and moisture transmission characteristics of the fabrics were assessed. The principal thermal properties, such as thermal absorptivity, thermal resistance and thermal conductivity, were experimentally evaluated, using the Alambeta instrument. The study of the obtained results established the fabrics of non-circular cross-sections as against circular ones, and increase in the linear density results in higher thermal resistance, lower thermal conductivity and lower thermal absorptivity. Wicking behaviour of fabrics was studied...
Rajeev K. Varshney - One of the best experts on this subject based on the ideXlab platform.
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influence of polyester Fibre Fineness and cross sectional shapes on tensile properties of yarns
Research journal of textile and apparel, 2011Co-Authors: V K Kothari, Sudershan Dhamija, Rajeev K. VarshneyAbstract:Mechanical properties of 100% polyester and polyester-viscose (P/V) blended yarns produced from polyester Fibres which vary in denier and cross-sectional shape have been analyzed. It is observed that Fibre Fineness and cross-sectional shape play a significant role in the translation of Fibre properties to the respective yarn properties. As the Fibre linear density decreases, Fibre strength translation efficiency increases. In the case of trilobal Fibre, translation efficiency is observed to be lower, but yarn breaking elongation is higher in comparison to the corresponding circular Fibre. Scalloped oval Fibre contributes more towards yarn strength and elongation versus the equivalent circular and tetraskelion Fibres. In the P/V blended form, a decrease in yarn tenacity does not affect Fibre Fineness, but is substantially influenced by changes in the Fibre profile. Contribution of broken viscose Fibres (comparatively weaker component) at the point of actual breaking of yarn, i.e. Z-value, is altered depending on the polyester Fibre profile, which is higher in trilobal and scalloped oval Fibres in comparison to the corresponding circular ones, but the role of Fibre linear density in this regard is rendered insignificant.
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Effect of polyester Fibre Fineness and cross‐sectional shape on physical characteristics of yarns
Journal of The Textile Institute, 2011Co-Authors: Sudershan Dhamija, V K Kothari, Rajeev K. VarshneyAbstract:Polyester Fibres with different geometrical features such as Fineness, length and cross‐sectional shapes were spun on a ring frame in all‐polyester and 67:33 polyester:viscose (P:V) blended schemes using viscose Fibres of same lengths. Along with circular Fibres, three other non‐circular Fibres, namely trilobal, scalloped oval and tetrakelion, were investigated. Yarn physical parameters such as diameter, diameter variation, Fibre packing fraction, surface twist angle variation, unevenness and imperfections were observed. It was found that an increase in the Fibre linear density increases the yarn diameter, diameter percent coefficient of variation (CV%), mass CV% and surface twist angle CV%. It was observed that non‐circular Fibres all have their yarn CV% higher than the corresponding circular ones. The trend of the yarn packing fraction decreased with the linear density of the constituent Fibre. The degree of yarn packing in non‐circular Fibres was observed to be lower than that in the corresponding circ...
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Effect of polyester Fibre Fineness and cross-sectional shape on physical characteristics of yarns
Journal of the Textile Institute, 2011Co-Authors: Sudershan Dhamija, V K Kothari, Rajeev K. VarshneyAbstract:Polyester Fibres with different geometrical features such as Fineness, length and cross‐sectional shapes were spun on a ring frame in all‐polyester and 67:33 polyester:viscose (P:V) blended schemes using viscose Fibres of same lengths. Along with circular Fibres, three other non‐circular Fibres, namely trilobal, scalloped oval and tetrakelion, were investigated. Yarn physical parameters such as diameter, diameter variation, Fibre packing fraction, surface twist angle variation, unevenness and imperfections were observed. It was found that an increase in the Fibre linear density increases the yarn diameter, diameter percent coefficient of variation (CV%), mass CV% and surface twist angle CV%. It was observed that non‐circular Fibres all have their yarn CV% higher than the corresponding circular ones. The trend of the yarn packing fraction decreased with the linear density of the constituent Fibre. The degree of yarn packing in non‐circular Fibres was observed to be lower than that in the corresponding circ...
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influence of polyester Fibre Fineness and cross sectional shape on low stress characteristics of fabrics
Journal of The Textile Institute, 2011Co-Authors: Rajeev K. Varshney, V K Kothari, Sudershan DhamijaAbstract:The paper presents the results of the investigations made on 2/1 twill fabrics made from polyester and polyester‐blended yarns to appreciate the role of constituent polyester Fibre Fineness and profiles in deciding their handle, appearance and performance in garment manufacturing operations. Three different polyester Fibre profiles, trilobal, scalloped oval and tetrakelion, along with circular were chosen and linear density of circular Fibre was varied for this investigation. The objective measurements were performed with Fabric Assurance by Simple Testing (FAST) system for evaluation of handle and tailoring performance by extracting information about deformations (i.e. compression, extensibility, bending and shear) in the fabrics. Fabrics’ physical and mechanical parameters were shown to be altered by Fibre form (Fineness and cross‐sectional shapes). Higher Fibre denier leads to higher values of all four mechanical characteristics and results in higher formability. The influence of cross‐section is very ...
V K Kothari - One of the best experts on this subject based on the ideXlab platform.
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influence of polyester Fibre Fineness and cross sectional shapes on tensile properties of yarns
Research journal of textile and apparel, 2011Co-Authors: V K Kothari, Sudershan Dhamija, Rajeev K. VarshneyAbstract:Mechanical properties of 100% polyester and polyester-viscose (P/V) blended yarns produced from polyester Fibres which vary in denier and cross-sectional shape have been analyzed. It is observed that Fibre Fineness and cross-sectional shape play a significant role in the translation of Fibre properties to the respective yarn properties. As the Fibre linear density decreases, Fibre strength translation efficiency increases. In the case of trilobal Fibre, translation efficiency is observed to be lower, but yarn breaking elongation is higher in comparison to the corresponding circular Fibre. Scalloped oval Fibre contributes more towards yarn strength and elongation versus the equivalent circular and tetraskelion Fibres. In the P/V blended form, a decrease in yarn tenacity does not affect Fibre Fineness, but is substantially influenced by changes in the Fibre profile. Contribution of broken viscose Fibres (comparatively weaker component) at the point of actual breaking of yarn, i.e. Z-value, is altered depending on the polyester Fibre profile, which is higher in trilobal and scalloped oval Fibres in comparison to the corresponding circular ones, but the role of Fibre linear density in this regard is rendered insignificant.
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Effect of polyester Fibre Fineness and cross‐sectional shape on physical characteristics of yarns
Journal of The Textile Institute, 2011Co-Authors: Sudershan Dhamija, V K Kothari, Rajeev K. VarshneyAbstract:Polyester Fibres with different geometrical features such as Fineness, length and cross‐sectional shapes were spun on a ring frame in all‐polyester and 67:33 polyester:viscose (P:V) blended schemes using viscose Fibres of same lengths. Along with circular Fibres, three other non‐circular Fibres, namely trilobal, scalloped oval and tetrakelion, were investigated. Yarn physical parameters such as diameter, diameter variation, Fibre packing fraction, surface twist angle variation, unevenness and imperfections were observed. It was found that an increase in the Fibre linear density increases the yarn diameter, diameter percent coefficient of variation (CV%), mass CV% and surface twist angle CV%. It was observed that non‐circular Fibres all have their yarn CV% higher than the corresponding circular ones. The trend of the yarn packing fraction decreased with the linear density of the constituent Fibre. The degree of yarn packing in non‐circular Fibres was observed to be lower than that in the corresponding circ...
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Effect of polyester Fibre Fineness and cross-sectional shape on physical characteristics of yarns
Journal of the Textile Institute, 2011Co-Authors: Sudershan Dhamija, V K Kothari, Rajeev K. VarshneyAbstract:Polyester Fibres with different geometrical features such as Fineness, length and cross‐sectional shapes were spun on a ring frame in all‐polyester and 67:33 polyester:viscose (P:V) blended schemes using viscose Fibres of same lengths. Along with circular Fibres, three other non‐circular Fibres, namely trilobal, scalloped oval and tetrakelion, were investigated. Yarn physical parameters such as diameter, diameter variation, Fibre packing fraction, surface twist angle variation, unevenness and imperfections were observed. It was found that an increase in the Fibre linear density increases the yarn diameter, diameter percent coefficient of variation (CV%), mass CV% and surface twist angle CV%. It was observed that non‐circular Fibres all have their yarn CV% higher than the corresponding circular ones. The trend of the yarn packing fraction decreased with the linear density of the constituent Fibre. The degree of yarn packing in non‐circular Fibres was observed to be lower than that in the corresponding circ...
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influence of polyester Fibre Fineness and cross sectional shape on low stress characteristics of fabrics
Journal of The Textile Institute, 2011Co-Authors: Rajeev K. Varshney, V K Kothari, Sudershan DhamijaAbstract:The paper presents the results of the investigations made on 2/1 twill fabrics made from polyester and polyester‐blended yarns to appreciate the role of constituent polyester Fibre Fineness and profiles in deciding their handle, appearance and performance in garment manufacturing operations. Three different polyester Fibre profiles, trilobal, scalloped oval and tetrakelion, along with circular were chosen and linear density of circular Fibre was varied for this investigation. The objective measurements were performed with Fabric Assurance by Simple Testing (FAST) system for evaluation of handle and tailoring performance by extracting information about deformations (i.e. compression, extensibility, bending and shear) in the fabrics. Fabrics’ physical and mechanical parameters were shown to be altered by Fibre form (Fineness and cross‐sectional shapes). Higher Fibre denier leads to higher values of all four mechanical characteristics and results in higher formability. The influence of cross‐section is very ...
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a study on thermophysiological comfort properties of fabrics in relation to constituent Fibre Fineness and cross sectional shapes
Journal of The Textile Institute, 2010Co-Authors: R K Varshney, V K Kothari, Sudershan DhamijaAbstract:The present study reports the effect of linear densities and profiles of polyester Fibres on the physiological properties of their fabrics. Four different polyester Fibre Finenesses along with microdenier and four cross-sectional shapes (circular, scalloped oval, tetrakelion and trilobal) were selected to produce two sets of 2/1 twill fabrics; one composed of 100% polyester and the other 67:33 P/V blends. In studying the thermophysiological component of the clothing comfort, heat, air and moisture transmission characteristics of the fabrics were assessed. The principal thermal properties, such as thermal absorptivity, thermal resistance and thermal conductivity, were experimentally evaluated, using the Alambeta instrument. The study of the obtained results established the fabrics of non-circular cross-sections as against circular ones, and increase in the linear density results in higher thermal resistance, lower thermal conductivity and lower thermal absorptivity. Wicking behaviour of fabrics was studied...
G A Constable - One of the best experts on this subject based on the ideXlab platform.
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increasing cotton seed Fibre density as a breeding strategy to improve Fibre Fineness
Field Crops Research, 2014Co-Authors: J D Clement, G A ConstableAbstract:Abstract Cotton breeders have long faced the challenge of simultaneously improving yield and Fibre quality. Spinners demand better quality, but until price premiums increase to compensate producers, yield will always be the economic prize. Therefore, yield must at least be maintained when improving Fibre quality for a cultivar to remain competitive. This study explores the use of a yield component, seed Fibre density (FD) as a means for providing yield stability while improving Fibre Fineness (lower linear density) and tests the usefulness of increasing FD as a way of ensuring micronaire is not too high. Three breeding populations were created by crossing high by high FD lines and two separate high by low FD lines. These populations were evaluated in single plant selection (SPS), progeny row and advancement of the highest and lowest FD lines across populations to a replicated experiment. Results indicate narrow sense heritability of FD was 0.25 in early generations, although not as high as that for lint fraction, length, short Fibre index and elongation. A 19% increase in FD resulted in a 14 μg m−1 decrease in Fineness without affecting yield. There were negative associations between FD with length, uniformity, short Fibre index and strength. Four other populations were created by crossing high and low FD breeding lines with high micronaire lines (>4.5), to evaluate the usefulness of FD for improving (reducing) Fineness and micronaire. Data from these populations indicated FD was an effective way to decrease Fineness and micronaire while maintaining yield. It was concluded that although FD was a practical trait to use in breeding to modify Fibre Fineness, breeding populations must be segregating for both Fineness and FD and careful attention must be given to appropriate parental choice and population size to avoid reductions in Fibre length and strength as a consequence of increasing FD.
T.s. Raveendran - One of the best experts on this subject based on the ideXlab platform.
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Selection parameters for improving the seed cotton yield and Fibre quality traits in American Cotton (Gossypium hirsutum L.)
Electronic Journal of Plant Breeding, 2010Co-Authors: K. N. Ganesan, T.s. RaveendranAbstract:Information on the influence of different yield components on improvement of yield will be crucial in any selection programme. Four intra-hirsutum hybrids viz., TCH1452 x MCU5, TCH1628 x Gh493, TCH1628 x MCU5 and SVPR2 x MCU5 were developed by utilizing the five genetically diverse American cotton (Gossypium hirsutum L.) genotypes as parents. Observations were recorded on plant height, boll number, boll weight, ginning outturn, lint index, seed index, 2.5% span length, bundle strength, Fibre Fineness, elongation % and seed cotton yield in F2 population and correlation of yield and its components were analysed to understand the relative contribution of different yield components in enhancing the yield and Fibre quality. Study revealed significant positive association of plant height, sympodia, boll number, boll weight with yield. Span length had highly significant negative association with yield whereas uniformity ratio exhibited both positively and negatively significant association with yield. Associations of Fibre Fineness, Fibre strength and elongation % with seed cotton yield was non-significant. Association of traits inter se revealed the positive association of plant height with sympodia, uniformity ratio, 2.5% span length and number of bolls, sympodia with uniformity ratio and boll number, boll weight with uniformity ratio, seed index with ginning %, Fibre length with bundle strength, uniformity ratio with micronaire and elongation %. Significant negative correlation of bolls with Fibre strength and 2.5% span length, lint index with 2.5% span length and ginning %, Fibre length with uniformity ratio and elongation %, micronaire with Fibre strength was observed. Information generated on the relationship between yield components, Fibre quality and yield in F2 generation will help the crop breeder in enhancing the efficiency of selection.
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Estimation of genetic parameters in cotton genotypes
Agricultural science digest, 2004Co-Authors: R. Manimaran, T.s. RaveendranAbstract:Twenty nine genotypes of cotton (19 Gossypium hirsutum and 10 G. barbadense) were estimated for genetic variability. High heritability was recorded by bundle strength. Seed cotton yield per plant and number of bolls per plant combined high heritability and genetic advance as percentage of mean. Bundle strength, 2.5 per cent span length, Fibre Fineness and seed oil content registered high heritability and low genetic advance as percentage of mean.
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Genetic analysis of Fibre characters in interracial dernatives of Gossypium hirsutum L.
Indian journal of agricultural research, 2002Co-Authors: K. Thangaraj, T.s. Raveendran, K.s. JehangirAbstract:Generation mean analysis for six crosses in upland cotton (G. hirsutum L.) was done by using the six parameter model to assess the gene action underlying the inheritance of Fibre characters viz., 2.5 per cent span length, uniformity ratio, bundle strength, maturity coefficient, Fibre Fineness and elongation per cent. It indicated the inadequacy of simple additive dominance model for all the Fibre quality characters. All the three types additive, dominance and digenit non allelic interaction effects were responsible for genetic determination ofFibre properties. The non fixable gene effects (h), (j) and (l) were predominant over fixable effects (d) and (i) suggesting that complicated breeding procedures would be required for improving the traits.