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Das A. - One of the best experts on this subject based on the ideXlab platform.

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part I - vapour transmission
    National Institute of Science Communication and Information Resources, 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    The effect of sheath fibre proportion, fibre fineness, and yarn fineness on Physiological Comfort related properties such as air permeability, water vapour permeability and thermal conductivity of Dref-III friction-spun yarn fabrics has been studied with an objective to analyse the feasibility of modified yarns for apparel end use. Samples have been prepared using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble polyvinyl alcohol as sheath. It is observed that the structural modification of yarn influences the Comfort related properties, effecting the vapour transmission behavior

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part I – Vapour transmission
    'CSIRO Publishing', 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    31-37The effect of sheath fibre proportion, fibre fineness, and yarn fineness on Physiological Comfort related properties such as air permeability, water vapour permeability and thermal conductivity of Dref-III friction-spun yarn fabrics has been studied with an objective to analyse the feasibility of modified yarns for apparel end use. Samples have been prepared using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble polyvinyl alcohol as sheath. It is observed that the structural modification of yarn influences the Comfort related properties, effecting the vapour transmission behavior

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part II – Liquid transmission
    'CSIRO Publishing', 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    134-138Dref III friction-spun yarn has been structurally modified using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble poly (vinyl alcohol) as sheath. The yarn is then treated with hot water to wash out PVA in the sheath, leaving the twistless viscose staple fibres on the surface. Effect of sheath fibre proportion, fibre fineness and yarn fineness on Physiological Comfort related properties affecting the liquid transmission behaviour, such as wickability and water absorbency, has been studied. It is observed that the structural modification of yarn influences the liquid transmission behaviour of fabric. All the three factors studied significantly affect the liquid transmission behaviour of the fabric

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part II - liquid transmission
    National Institute of Science Communication and Information Resources, 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    Dref III friction-spun yarn has been structurally modified using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble poly (vinyl alcohol) as sheath. The yarn is then treated with hot water to wash out PVA in the sheath, leaving the twistless viscose staple fibres on the surface. Effect of sheath fibre proportion, fibre fineness and yarn fineness on Physiological Comfort related properties affecting the liquid transmission behaviour, such as wickability and water absorbency, has been studied. It is observed that the structural modification of yarn influences the liquid transmission behaviour of fabric. All the three factors studied significantly affect the liquid transmission behaviour of the fabric

Gideon K. Rotich - One of the best experts on this subject based on the ideXlab platform.

  • The influence of yarn parameters on thermo-Physiological Comfort of cotton woven fabrics
    Journal of Thermal Analysis and Calorimetry, 2021
    Co-Authors: Desalegn Atalie, Gideon K. Rotich
    Abstract:

    As the global temperature increases over time due to different environmental pollutions, apparel clothing with excellent thermo-Physiological Comfort needs to be developed to improve human health and Comfort. Thermo-Physiological Comfort of apparel clothing must be suitable for the wearer both in winter and summer seasons. Poor thermo-Physiological properties can lead to disComfort, fluctuation in body temperature, poor sweat management during wear and can affect human health as well as work efficiency. For this reason, optimum thermo-Physiological Comfort of clothing is a prerequisite for users at any given weather. The aim of this study was to investigate the effect of cotton yarn parameters on thermo-Physiological Comfort of woven fabrics. Four types of woven fabrics were developed from cotton yarn with different counts, twist, coefficient of variation of mass (CVm), neps, hairiness, thin places, thick places, strength and elongation. Yarn samples were produced separately by carding and rotor spun before they were woven on an air jet machine with same settings. Finally, the woven fabrics were finished in a combined finishing treatment process. Thermal resistance, thermal conductivity, thermal absorptivity, thermal diffusivity, air permeability and relative water vapor permeability of the woven fabrics were measured and analyzed. Statistically analyzed results showed that thermal resistance, thermal conductivity, thermal absorptivity and air permeability of fabrics had statistically significant change with P -values of .029, .035, .005 and .000, respectively. However, from the results, the yarn parameters did not affect thermal diffusivity and water vapor permeability of fabrics. Model equations were developed based on the results to predict the Comfort of the fabric from the yarn parameters.

Ada Ferri - One of the best experts on this subject based on the ideXlab platform.

  • Thermo-Physiological Comfort of soft-shell back protectors under controlled environmental conditions
    Applied ergonomics, 2016
    Co-Authors: Francesca Dotti, Ada Ferri, Matteo Moncalero, Martino Colonna
    Abstract:

    The aim of the study was to investigate thermo-Physiological Comfort of three back protectors identifying design features affecting heat loss and moisture management. Five volunteers tested the back protectors in a climatic chamber during an intermittent physical activity. Heart rate, average skin temperature, sweat production, microclimate temperature and humidity have been monitored during the test. The sources of heat losses have been identified using infrared thermography and the participants answered a questionnaire to express their subjective sensations associated with their thermo-Physiological condition. The results have shown that locally torso skin temperature and microclimate depended on the type of back protector, whose design allowed different extent of perspiration and thermal insulation. Coupling Physiological measurements with the questionnaire, it was found that overall Comfort was dependent more on skin wetness than skin temperature: the participants preferred the back protector with the highest level of ventilation through the shell and the lowest level of microclimate humidity.

  • Thermo‐Physiological Comfort of a PES fabric with incorporated activated carbon: Part II: wear trials
    International Journal of Clothing Science and Technology, 2011
    Co-Authors: R. Splendore, Francesca Dotti, B. Cravello, Ada Ferri
    Abstract:

    Purpose – The purpose of this paper is to consider the thermal‐Physiological Comfort performances of a sport shirt made of a polyester (PES) fabric with incorporated activated carbon. After having characterized the modified PES fabric in Part I, the results of a wear trial campaign are shown and discussed in this work. Design/methodology/approach – The wear trials have been carried out under a controlled physical activity. A short‐and‐intense effort and an intermittent effort of milder intensity were carried out twice by each volunteer: once wearing a shirt made of the modified PES fabric and the other one wearing an analogous shirt made of a conventional PES fabric. Findings – When sweating was moderate, the modified PES shirt was judged as more Comfortable on the average. As the effort became harder, the modified PES fabric turned out to be less Comfortable than the conventional one. In the final recovery stage, the conventional PES was still more Comfortable than the modified PES. This behaviour was justified according to the findings of Part I: at the beginning, the prevailing effect was the adsorbing ability of carbon particles that buffer sweat impulses, giving the user a pleasant dry sensation. Then, when sweating became intense, the lower evaporative cooling of the modified PES fabric became the key factor governing the Physiological Comfort of the garment. This is confirmed by a slightly higher skin temperature measured during the modified PES fabric trials. Finally, a post‐exercise chill sensation was felt with the modified PES fabric, due to a longer drying time. Originality/value – The paper presents a comprehensive study of the thermo‐Physiological Comfort of a fabric containing activated carbon particles.

  • thermo Physiological Comfort of a pes fabric with incorporated activated carbon part ii wear trials
    International Journal of Clothing Science and Technology, 2011
    Co-Authors: R. Splendore, Francesca Dotti, B. Cravello, Ada Ferri
    Abstract:

    Purpose – The purpose of this paper is to consider the thermal‐Physiological Comfort performances of a sport shirt made of a polyester (PES) fabric with incorporated activated carbon. After having characterized the modified PES fabric in Part I, the results of a wear trial campaign are shown and discussed in this work. Design/methodology/approach – The wear trials have been carried out under a controlled physical activity. A short‐and‐intense effort and an intermittent effort of milder intensity were carried out twice by each volunteer: once wearing a shirt made of the modified PES fabric and the other one wearing an analogous shirt made of a conventional PES fabric. Findings – When sweating was moderate, the modified PES shirt was judged as more Comfortable on the average. As the effort became harder, the modified PES fabric turned out to be less Comfortable than the conventional one. In the final recovery stage, the conventional PES was still more Comfortable than the modified PES. This behaviour was justified according to the findings of Part I: at the beginning, the prevailing effect was the adsorbing ability of carbon particles that buffer sweat impulses, giving the user a pleasant dry sensation. Then, when sweating became intense, the lower evaporative cooling of the modified PES fabric became the key factor governing the Physiological Comfort of the garment. This is confirmed by a slightly higher skin temperature measured during the modified PES fabric trials. Finally, a post‐exercise chill sensation was felt with the modified PES fabric, due to a longer drying time. Originality/value – The paper presents a comprehensive study of the thermo‐Physiological Comfort of a fabric containing activated carbon particles.

  • Thermo‐Physiological Comfort of a PES fabric with incorporated activated carbon: Part I: preliminary physical analysis
    International Journal of Clothing Science and Technology, 2010
    Co-Authors: R. Splendore, Francesca Dotti, B. Cravello, Ada Ferri
    Abstract:

    Purpose – The purpose of this paper is to consider the thermal‐Physiological Comfort performances of a sport shirt made of a polyester (PES) fabric with incorporated activated carbon. After having characterized the modified PES fabric in Part I, the results of a wear trial campaign are shown and discussed in this work.Design/methodology/approach – The wear trials have been carried out under a controlled physical activity. A short‐and‐intense effort and an intermittent effort of milder intensity were carried out twice by each volunteer: once wearing a shirt made of the modified PES fabric and the other one wearing an analogous shirt made of a conventional PES fabric.Findings – When sweating was moderate, the modified PES shirt was judged as more Comfortable on the average. As the effort became harder, the modified PES fabric turned out to be less Comfortable than the conventional one. In the final recovery stage, the conventional PES was still more Comfortable than the modified PES. This behaviour was just...

  • thermo Physiological Comfort of a pes fabric with incorporated activated carbon part i preliminary physical analysis
    International Journal of Clothing Science and Technology, 2010
    Co-Authors: R. Splendore, Francesca Dotti, B. Cravello, Ada Ferri
    Abstract:

    Purpose – The purpose of this paper is to consider the thermal‐Physiological Comfort performances of a sport shirt made of a polyester (PES) fabric with incorporated activated carbon. After having characterized the modified PES fabric in Part I, the results of a wear trial campaign are shown and discussed in this work.Design/methodology/approach – The wear trials have been carried out under a controlled physical activity. A short‐and‐intense effort and an intermittent effort of milder intensity were carried out twice by each volunteer: once wearing a shirt made of the modified PES fabric and the other one wearing an analogous shirt made of a conventional PES fabric.Findings – When sweating was moderate, the modified PES shirt was judged as more Comfortable on the average. As the effort became harder, the modified PES fabric turned out to be less Comfortable than the conventional one. In the final recovery stage, the conventional PES was still more Comfortable than the modified PES. This behaviour was just...

Singh K. V. P. - One of the best experts on this subject based on the ideXlab platform.

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part I - vapour transmission
    National Institute of Science Communication and Information Resources, 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    The effect of sheath fibre proportion, fibre fineness, and yarn fineness on Physiological Comfort related properties such as air permeability, water vapour permeability and thermal conductivity of Dref-III friction-spun yarn fabrics has been studied with an objective to analyse the feasibility of modified yarns for apparel end use. Samples have been prepared using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble polyvinyl alcohol as sheath. It is observed that the structural modification of yarn influences the Comfort related properties, effecting the vapour transmission behavior

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part I – Vapour transmission
    'CSIRO Publishing', 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    31-37The effect of sheath fibre proportion, fibre fineness, and yarn fineness on Physiological Comfort related properties such as air permeability, water vapour permeability and thermal conductivity of Dref-III friction-spun yarn fabrics has been studied with an objective to analyse the feasibility of modified yarns for apparel end use. Samples have been prepared using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble polyvinyl alcohol as sheath. It is observed that the structural modification of yarn influences the Comfort related properties, effecting the vapour transmission behavior

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part II – Liquid transmission
    'CSIRO Publishing', 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    134-138Dref III friction-spun yarn has been structurally modified using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble poly (vinyl alcohol) as sheath. The yarn is then treated with hot water to wash out PVA in the sheath, leaving the twistless viscose staple fibres on the surface. Effect of sheath fibre proportion, fibre fineness and yarn fineness on Physiological Comfort related properties affecting the liquid transmission behaviour, such as wickability and water absorbency, has been studied. It is observed that the structural modification of yarn influences the liquid transmission behaviour of fabric. All the three factors studied significantly affect the liquid transmission behaviour of the fabric

  • Study on Physiological Comfort of fabrics made up of structurally modified friction-spun yarns: Part II - liquid transmission
    National Institute of Science Communication and Information Resources, 2010
    Co-Authors: Singh K. V. P., Chatterjee A., Das A.
    Abstract:

    Dref III friction-spun yarn has been structurally modified using polyester filament fibre as core, viscose staple fibre as secondary core and water soluble poly (vinyl alcohol) as sheath. The yarn is then treated with hot water to wash out PVA in the sheath, leaving the twistless viscose staple fibres on the surface. Effect of sheath fibre proportion, fibre fineness and yarn fineness on Physiological Comfort related properties affecting the liquid transmission behaviour, such as wickability and water absorbency, has been studied. It is observed that the structural modification of yarn influences the liquid transmission behaviour of fabric. All the three factors studied significantly affect the liquid transmission behaviour of the fabric

Roger L. Barker - One of the best experts on this subject based on the ideXlab platform.

  • Impact of reinforcements on heat stress in structural firefighter turnout suits
    Journal of The Textile Institute, 2018
    Co-Authors: Meredith Mcquerry, Emiel Denhartog, Roger L. Barker
    Abstract:

    AbstractThe purpose of this research was to determine the impact of additional textile layer reinforcements on garment heat loss and the Physiological Comfort of the firefighter. Four structural firefighter turnouts with varying levels of ‘bulk’ were assessed. A base composite analysis was conducted and each suit was evaluated for thermal resistance, evaporative resistance, and overall total heat loss (THL) on a sweating thermal manikin. Raw resistance data were then modeled to predict the Physiological responses of firefighters for each turnout suit. Base composite percentages were compared to the heat loss values and predicted Physiological responses. The Light Weight suit along with the Control, demonstrated the greatest heat loss values and lowest rise in predicted core temperature. Overall, results depicted the harmful impact that bulky reinforcements may have on wearer Physiological Comfort as the Heavy Duty suit had significantly lower heat loss and a potentially fatal maximum predicted core temper...

  • Impact of reinforcements on heat stress in structural firefighter turnout suits
    The Journal of The Textile Institute, 2018
    Co-Authors: Meredith Mcquerry, Emiel Denhartog, Roger L. Barker
    Abstract:

    The purpose of this research was to determine the impact of additional textile layer reinforcements on garment heat loss and the Physiological Comfort of the firefighter. Four structural firefighte...