Qasim Siddiqui - Academia.edu (original) (raw)

Papers by Qasim Siddiqui

Pakistan Journal of …, 2006

For obtaining optimum conditions for dyeing a cellulosic substrate (cotton K-68) with bifunctiona... more For obtaining optimum conditions for dyeing a cellulosic substrate (cotton K-68) with bifunctional reactive dyes, it was investigated as to how the dyeing results depended upon the properties of the dyes and the substrate. A cellulosic substrate (cotton K-68) was dyed by varying the ...

Textile Science and Clothing Technology

The Journal of The Textile Institute, 2019

In the area of filament wrapped-staple core composite yarn production, there are potential challe... more In the area of filament wrapped-staple core composite yarn production, there are potential challenges in achieving better cover and hairiness among other mechanical properties. In a bid to further improve the wrapped-core yarn production; multifilament web spreading and feeding approaches were studied in relation to yarn properties. Multifilament spreading apparatus designed and used for our previous research work was further improved in order to increase spread width, minimize damage to monofilaments and control the spreading evenness. Uniform and increased multifilament spread width can be achieved by an elliptical shaped micro-grooved roller, overcoming roller surface imperfections, minimizing spreading assembly oscillations, and consequently achieve superior filament wrapping around the staple core. Filament-staple feeding arrangement might positively influence the multifilament wrapping-ability. Scanning electron microscopy was used to study effects of spreading on the surface ...

The interaction between dynamic drafting force and its variability with break draft and short ter... more The interaction between dynamic drafting force and its variability with break draft and short term irregularity of carded cotton sliver has been discussed. Drafting force data have been collected from online draftometer, installed on break draft zone of cotton drawing frame. The results indicate that the dynamic drafting force initially increases with the increase in break draft up to a certain point, followed by attaining peak region with some fluctuation in drafting force. After reaching the maximum point, drafting force gradually decreases with any further increase in break draft. The CV% of drafting force and short term sliver irregularity show the same trend with each other and oppositely to drafting force. Study on drafting force is not only applicable in optimization of break draft, but also the variability of drafting force provides better understanding of the dynamic behavior of the flowing fibre bundles and its impact on short term sliver irregularity.

Quality cotton fiber is vital to produce quality yarn and, subsequently, better-quality fabrics. ... more Quality cotton fiber is vital to produce quality yarn and, subsequently, better-quality fabrics. As per data provided by USDA for the year 2020/21 world cotton production is expected at 117 million bales (1 bale = 220 kg). The variability in the quality of cotton is dominated due to environmental conditions and depends on the area of cultivation. To produce the best quality yarn and uniform fabrics, we need to measure and control each quality parameter of cotton fiber. Uster Switzerland is one of the leaders in testing cotton fiber characteristics through its state-of-the-art HVI and AFIS fiber testing equipment. Understanding cotton fiber characteristics and their relationships with yarn and fabric quality are essential to produce good quality textiles. In this chapter, the main quality parameters of cotton fiber, along with its basic testing principles, have been discussed. Cotton fiber quality is determined by various parameters such as maturity, fineness, micronaire (mic), lengt...

Cotton is the most important and widespread natural textile fiber in the world. Across 75 countri... more Cotton is the most important and widespread natural textile fiber in the world. Across 75 countries, the production of cotton crops provides income for more than 250 million people. Approximately half of all textile products are made of cotton in the form of apparel, home textiles, and industrial products. As all agriculture crops, cotton is also dependent on the climate conditions, soil quality, and water in which it is cultivated. All of these factors contribute to the diversity of cotton fiber properties. This chapter covers a wide range of essential segments related to cotton production, its structure, and different quality parameters. Best management practices result in better yield and quality of cotton fiber. This chapter also covers the important aspects of BMPs for cotton fiber cultivation. BCI, the better cotton initiative, is also one of the initiatives to make better sustainable cotton production. To enhance biodiversity and to maintain biological cycles, organic cotton can play an important role. This category of the cotton crop is produced with non-genetically modified plants, and by avoiding the use of any fertilizers or pesticides during its production. Keeping in mind its pivotal role, this chapter has also included the latest advancements in organic cotton.

Textile Research Journal, 2015

Fabric-evoked prickle sensation is one of the most important criteria used by consumers in judgin... more Fabric-evoked prickle sensation is one of the most important criteria used by consumers in judging clothing comfort. In this study, a measurement method that is capable of characterizing and ranking the subjective prickle score sensation of various wear fabric products has been developed using seven different materials. A 1–7 subjective rating scale was adopted for response measurement and eight different fabrics varying in fiber composition were evaluated by 31 subjects. In addition, the sensitivity of six separate areas of the human skin were tested, namely the right forearm, back neck, the upper back, abdomen, right side waist and right inner thigh. The testing technique was standardized, to incorporate within-subject reliability and between-subject uniformity. The result is rational with a barely slight prickle sensation for the cotton, cashmere and cotton/polyester fabrics and high prickle score feeling for the ramie, wool and jute fabrics. The influence of different human body...

Journal of Applied and Emerging Sciences

This study is focused on the optimization of drafting process through measuring drafting force an... more This study is focused on the optimization of drafting process through measuring drafting force and short term irregularities of fiber strand. Drafting force is the instinctive factor initiated by the frictional forces between slow moving and fast moving fibers during attenuation. Drafting force can be a good source of information regarding dynamic fiber behavior and reflects combined effect of multiple fiber and process parameters, for a particular materiel. The interaction between break draft and drafting force and how these in turn affect the irregularity of sliver has been analyzed by utilizing data from online drafting force device. The results showed that dynamic drafting force increases with the increase in break draft around 1.4 and then decreases with further increase in break draft. Short term sliver irregularity decreases up to 1.4 break draft and then increases as break draft increases. Furthermore, the region where drafting force reaches its maximum corresponds to the minimum sliver unevenness. Optimum break draft setting can be achieved at a point where the drafting force reached its maximum along with minimum short term sliver irregularity.

Sensors and Actuators A: Physical

Journal of Industrial Textiles

In recent times, there is a growing demand for low-cost raw materials, renewable resources, and e... more In recent times, there is a growing demand for low-cost raw materials, renewable resources, and eco-friendly end products. Natural fibers are considered as strong candidates to be used as a potential reinforcement for composite manufacturing. In the current study, natural fibers extracted from banana peel were coated with bacterial cellulose through a green biosynthesis approach as well as by a simple slurry dipping method. Thus, natural fibers from banana peel waste were used the first time, to produce bacterial cellulose-natural fiber composites. SEM analysis revealed good interaction between the hybrid fibers and the epoxy matrix. Thermal gravimetric analysis results revealed that the degradation temperature increases because of the addition of bacterial cellulose on fiber surface, which improves the thermal stability. The maximum thermal decomposition temperature (405°C) was noticed for nanocomposites reinforced by banana fibers with bacterial cellulose deposited on their surfac...

IOP Conference Series: Materials Science and Engineering

Journal of Natural Fibers

Journal of Industrial Textiles

This study investigates the biosynthesis of microbial cellulose–electrospun nano-fibrous membrane... more This study investigates the biosynthesis of microbial cellulose–electrospun nano-fibrous membrane hybrid nano-fabric via the use of a modified bioreactor. Microbial cellulose is known for its high liquid absorbency and hygienic nature. Electrospun nano-fibrous membranes, on the other hand, exhibit excessive surface hydrophobicity in typical conditions. As such, this research intends to improve the hydrophilic property of electrospun membranes through in situ self-assembly of microbial cellulose nano-fibrils on membrane’s surface. Scanning electron microscopy showed successful growth of microbial cellulose nano-fibrils on the surface and within the structure of electrospun membranes which could possibly contribute toward improved tensile properties. Some functional properties of hybrid nano-fabric, including water absorbency, drying time, and amount of vertical wicking, were determined and compared with pure electrospun membrane samples. Results showed that water absorbency, wicking ...

Journal of Composite Materials

Due to various production stages involved, textiles and clothing industry is known for causing ca... more Due to various production stages involved, textiles and clothing industry is known for causing carbon dioxide emissions, water pollution, soil erosion and huge waste generation. It is a need of the hour to seek for natural, renewable, and bio-degradable fabrication materials and environmentally friendly production methods. This study proposes an eco-friendly approach to prepare bacterial cellulose/electrospun nanofibers membrane-based hybrid non-woven fabrics using in-situ self-assembly method. This fabrication method enables bacterial cellulose cultivation on nanofibrous membrane support to create custom-made seamless tubular hybrid fabrics in desirable dimensions, to be used for various textile applications with minimized material wastage. As-prepared nano-composite fabric was characterized using SEM, X-ray diffraction, and FTIR. FTIR and X-ray diffraction results confirmed the presence of bacterial cellulose in the composite structure. SEM analysis showed as the bacterial cellulo...

Journal of Natural Fibers

Journal- Chemical Society of Pakistan

Textile Research Journal, 2014

Textile Research Journal, 2015

Pakistan Journal of …, 2006

For obtaining optimum conditions for dyeing a cellulosic substrate (cotton K-68) with bifunctiona... more For obtaining optimum conditions for dyeing a cellulosic substrate (cotton K-68) with bifunctional reactive dyes, it was investigated as to how the dyeing results depended upon the properties of the dyes and the substrate. A cellulosic substrate (cotton K-68) was dyed by varying the ...

Textile Science and Clothing Technology

The Journal of The Textile Institute, 2019

In the area of filament wrapped-staple core composite yarn production, there are potential challe... more In the area of filament wrapped-staple core composite yarn production, there are potential challenges in achieving better cover and hairiness among other mechanical properties. In a bid to further improve the wrapped-core yarn production; multifilament web spreading and feeding approaches were studied in relation to yarn properties. Multifilament spreading apparatus designed and used for our previous research work was further improved in order to increase spread width, minimize damage to monofilaments and control the spreading evenness. Uniform and increased multifilament spread width can be achieved by an elliptical shaped micro-grooved roller, overcoming roller surface imperfections, minimizing spreading assembly oscillations, and consequently achieve superior filament wrapping around the staple core. Filament-staple feeding arrangement might positively influence the multifilament wrapping-ability. Scanning electron microscopy was used to study effects of spreading on the surface ...

The interaction between dynamic drafting force and its variability with break draft and short ter... more The interaction between dynamic drafting force and its variability with break draft and short term irregularity of carded cotton sliver has been discussed. Drafting force data have been collected from online draftometer, installed on break draft zone of cotton drawing frame. The results indicate that the dynamic drafting force initially increases with the increase in break draft up to a certain point, followed by attaining peak region with some fluctuation in drafting force. After reaching the maximum point, drafting force gradually decreases with any further increase in break draft. The CV% of drafting force and short term sliver irregularity show the same trend with each other and oppositely to drafting force. Study on drafting force is not only applicable in optimization of break draft, but also the variability of drafting force provides better understanding of the dynamic behavior of the flowing fibre bundles and its impact on short term sliver irregularity.

Quality cotton fiber is vital to produce quality yarn and, subsequently, better-quality fabrics. ... more Quality cotton fiber is vital to produce quality yarn and, subsequently, better-quality fabrics. As per data provided by USDA for the year 2020/21 world cotton production is expected at 117 million bales (1 bale = 220 kg). The variability in the quality of cotton is dominated due to environmental conditions and depends on the area of cultivation. To produce the best quality yarn and uniform fabrics, we need to measure and control each quality parameter of cotton fiber. Uster Switzerland is one of the leaders in testing cotton fiber characteristics through its state-of-the-art HVI and AFIS fiber testing equipment. Understanding cotton fiber characteristics and their relationships with yarn and fabric quality are essential to produce good quality textiles. In this chapter, the main quality parameters of cotton fiber, along with its basic testing principles, have been discussed. Cotton fiber quality is determined by various parameters such as maturity, fineness, micronaire (mic), lengt...

Cotton is the most important and widespread natural textile fiber in the world. Across 75 countri... more Cotton is the most important and widespread natural textile fiber in the world. Across 75 countries, the production of cotton crops provides income for more than 250 million people. Approximately half of all textile products are made of cotton in the form of apparel, home textiles, and industrial products. As all agriculture crops, cotton is also dependent on the climate conditions, soil quality, and water in which it is cultivated. All of these factors contribute to the diversity of cotton fiber properties. This chapter covers a wide range of essential segments related to cotton production, its structure, and different quality parameters. Best management practices result in better yield and quality of cotton fiber. This chapter also covers the important aspects of BMPs for cotton fiber cultivation. BCI, the better cotton initiative, is also one of the initiatives to make better sustainable cotton production. To enhance biodiversity and to maintain biological cycles, organic cotton can play an important role. This category of the cotton crop is produced with non-genetically modified plants, and by avoiding the use of any fertilizers or pesticides during its production. Keeping in mind its pivotal role, this chapter has also included the latest advancements in organic cotton.

Textile Research Journal, 2015

Fabric-evoked prickle sensation is one of the most important criteria used by consumers in judgin... more Fabric-evoked prickle sensation is one of the most important criteria used by consumers in judging clothing comfort. In this study, a measurement method that is capable of characterizing and ranking the subjective prickle score sensation of various wear fabric products has been developed using seven different materials. A 1–7 subjective rating scale was adopted for response measurement and eight different fabrics varying in fiber composition were evaluated by 31 subjects. In addition, the sensitivity of six separate areas of the human skin were tested, namely the right forearm, back neck, the upper back, abdomen, right side waist and right inner thigh. The testing technique was standardized, to incorporate within-subject reliability and between-subject uniformity. The result is rational with a barely slight prickle sensation for the cotton, cashmere and cotton/polyester fabrics and high prickle score feeling for the ramie, wool and jute fabrics. The influence of different human body...

Journal of Applied and Emerging Sciences

This study is focused on the optimization of drafting process through measuring drafting force an... more This study is focused on the optimization of drafting process through measuring drafting force and short term irregularities of fiber strand. Drafting force is the instinctive factor initiated by the frictional forces between slow moving and fast moving fibers during attenuation. Drafting force can be a good source of information regarding dynamic fiber behavior and reflects combined effect of multiple fiber and process parameters, for a particular materiel. The interaction between break draft and drafting force and how these in turn affect the irregularity of sliver has been analyzed by utilizing data from online drafting force device. The results showed that dynamic drafting force increases with the increase in break draft around 1.4 and then decreases with further increase in break draft. Short term sliver irregularity decreases up to 1.4 break draft and then increases as break draft increases. Furthermore, the region where drafting force reaches its maximum corresponds to the minimum sliver unevenness. Optimum break draft setting can be achieved at a point where the drafting force reached its maximum along with minimum short term sliver irregularity.

Sensors and Actuators A: Physical

Journal of Industrial Textiles

In recent times, there is a growing demand for low-cost raw materials, renewable resources, and e... more In recent times, there is a growing demand for low-cost raw materials, renewable resources, and eco-friendly end products. Natural fibers are considered as strong candidates to be used as a potential reinforcement for composite manufacturing. In the current study, natural fibers extracted from banana peel were coated with bacterial cellulose through a green biosynthesis approach as well as by a simple slurry dipping method. Thus, natural fibers from banana peel waste were used the first time, to produce bacterial cellulose-natural fiber composites. SEM analysis revealed good interaction between the hybrid fibers and the epoxy matrix. Thermal gravimetric analysis results revealed that the degradation temperature increases because of the addition of bacterial cellulose on fiber surface, which improves the thermal stability. The maximum thermal decomposition temperature (405°C) was noticed for nanocomposites reinforced by banana fibers with bacterial cellulose deposited on their surfac...

IOP Conference Series: Materials Science and Engineering

Journal of Natural Fibers

Journal of Industrial Textiles

This study investigates the biosynthesis of microbial cellulose–electrospun nano-fibrous membrane... more This study investigates the biosynthesis of microbial cellulose–electrospun nano-fibrous membrane hybrid nano-fabric via the use of a modified bioreactor. Microbial cellulose is known for its high liquid absorbency and hygienic nature. Electrospun nano-fibrous membranes, on the other hand, exhibit excessive surface hydrophobicity in typical conditions. As such, this research intends to improve the hydrophilic property of electrospun membranes through in situ self-assembly of microbial cellulose nano-fibrils on membrane’s surface. Scanning electron microscopy showed successful growth of microbial cellulose nano-fibrils on the surface and within the structure of electrospun membranes which could possibly contribute toward improved tensile properties. Some functional properties of hybrid nano-fabric, including water absorbency, drying time, and amount of vertical wicking, were determined and compared with pure electrospun membrane samples. Results showed that water absorbency, wicking ...

Journal of Composite Materials

Due to various production stages involved, textiles and clothing industry is known for causing ca... more Due to various production stages involved, textiles and clothing industry is known for causing carbon dioxide emissions, water pollution, soil erosion and huge waste generation. It is a need of the hour to seek for natural, renewable, and bio-degradable fabrication materials and environmentally friendly production methods. This study proposes an eco-friendly approach to prepare bacterial cellulose/electrospun nanofibers membrane-based hybrid non-woven fabrics using in-situ self-assembly method. This fabrication method enables bacterial cellulose cultivation on nanofibrous membrane support to create custom-made seamless tubular hybrid fabrics in desirable dimensions, to be used for various textile applications with minimized material wastage. As-prepared nano-composite fabric was characterized using SEM, X-ray diffraction, and FTIR. FTIR and X-ray diffraction results confirmed the presence of bacterial cellulose in the composite structure. SEM analysis showed as the bacterial cellulo...

Journal of Natural Fibers

Journal- Chemical Society of Pakistan

Textile Research Journal, 2014

Textile Research Journal, 2015