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1 – 10 of 15Samridhi Garg, Vinay Kumar Midha and Monica Sikka
In experiments utilising sweat solution and distilled water, seamed ensembles performed less thermally efficiently than unseamed fabrics.
Abstract
Purpose
In experiments utilising sweat solution and distilled water, seamed ensembles performed less thermally efficiently than unseamed fabrics.
Design/methodology/approach
Water may not accurately reflect perspiration when testing multi-layered clothes for thermal comfort in wet state. Most researchers used water or sodium chloride (NaCl) to measure wet state thermal comfort. However, human perspiration is an extremely complex mixture of aqueous chemicals, including minerals, salts, lipids, urea and lactic acid. This study compares the effects of simulated sweat solution to distilled water on the thermal behaviour of a multi-layered fabric assembly with different seam patterns.
Findings
Experiment results show that stitching decreases thermal resistance and thermal conductivity. Seam pattern of 10 cm diagonal spacing is more thermally resistant than 2.5 cm diagonal spacing. In comparison to that of simulated sweat, fabric that has been moistened with distilled water exhibits increased thermal conductivity. Hollow polyester wadding or micro polyester wadding as the intermediate layer exhibits greater thermal resistance than multi-layered construction with spacer fabric as middle layer.
Originality/value
This study considers human perspiration while designing protective clothing for wet thermal comfort.
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Pasquale Giungato, Bianca Moramarco, Roberto Leonardo Rana and Caterina Tricase
International outbreak of the SARS-CoV-2 infection has fostered the Italian government to impose the FFP2 protective facial masks in closed environments, including bar…
Abstract
Purpose
International outbreak of the SARS-CoV-2 infection has fostered the Italian government to impose the FFP2 protective facial masks in closed environments, including bar, restaurants and, more in general, in the food sector. Protective facial masks are rocketing, both in mass and in costs, in the food sector imposing efforts in fostering reuse strategies and in the achievement of sustainable development goals. The scope of the present paper is to depict possible strategies in manufacturing and reuse strategies that can reduce the carbon footprint (CF) of such devices.
Design/methodology/approach
To implement circular economy strategies in the protective facial masks supply chain, it was considered significant to move towards a study of the environmental impact of such devices, and therefore a CF study has been performed on an FFP2 facial mask used in the food sector. Different materials besides the mostly used polypropylene (PP) (polyethylene (PE), polycarbonate (PC), poly (lactic acid) (PLA), cotton, polyurethane (PUR), polystyrene (PS) and nylon 6,6) and different sanitisation alternatives as reuse strategies (both laboratory and homemade static oven, ultraviolet germicidal irradiation) readily implemented have been modelled to calculate the CF of a single use of an FFP2 mask.
Findings
The production of textiles in PP, followed by disposal was the main contributor to CF of the single-use FFP2 mask, followed by packaging and transportations. PP and PE were the least impacting, PC, cotton and Nylon 6-6 of the same weight results the worst. PLA has an impact greater than PP and PE obtained from crude oil, followed by PUR and PS. Static laboratory oven obtained an 80.4% reduction of CF with respect to single use PP-made FFP2 mask, whereas homemade oven obtained a similar 82.2% reduction; UV cabinet is the best option, showing an 89.9% reduction.
Research limitations/implications
The key strategies to reduce the environmental impacts of the masks (research for new materials and reuse with sanitisation) should ensure both the retention of filtering capacities and the sanitary sterility of the reused ones. Future developments should include evaluations of textile recycling impacts, using new materials and the evaluation of the life cycle costs of the reused masks.
Practical implications
This paper intends to provide to stakeholders (producers, consumers and policy makers) the tools to choose the best option for producing and reuse environmentally friendly protective facial masks to be used in the food sector, by using both different materials and easily implemented reuse strategies.
Social implications
The reduction of the CF of protective facial masks in the food sector surely will have relevant positive effects on climate change contributing to reach the goals of reducing CO2 emissions. The food sector may promote sustainable practices and attract a niche piece of clients particularly sensible to such themes.
Originality/value
The paper has two major novelties. The first one is the assessment of the CF of a single use of an FFP2 mask made with different materials of the non-woven filtering layers; as the major contribution to the CF of FFP2 masks is related to the non-woven textiles manufacturing, the authors test some other different materials, including PLA. The second is the assessment of the CF of one single use of a sanitised FFP2 mask, using different sanitation technologies as those allowed in bars or restaurants.
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Saloni Purandare and Chunhui Xiang
Firefighter Personal Protective Equipment (PPE) is the only barrier between the firefighter and hazardous environment. Gloves are a crucial component of the multi-component PPE…
Abstract
Purpose
Firefighter Personal Protective Equipment (PPE) is the only barrier between the firefighter and hazardous environment. Gloves are a crucial component of the multi-component PPE. Over time the gloves have reduced the intensity of hand injuries, yet further improvement in terms of material selection and glove design is required to strike the balance between protection and comfort. Focusing on the material aspect, the purpose of this study is to present literature analysis on material selection and testing for firefighter gloves.
Design/methodology/approach
The study conducted a literature analysis on material selection and characterization of firefighter PPE. The review summarizes and evaluates past work addressing the characterization of firefighter gloves in accordance with NFPA 1971 requirements and points out found research gaps to aid with foundation of future research.
Findings
The study summarizes several research works to inform readers about the material selection and characterization of firefighter gloves. Based on the analyzed literature, the study resulted in material specification sheets for firefighter gloves. The developed material specification sheets provide information in terms of crucial material properties to be incorporated for accurate functioning of firefighter gloves, testing methods to validate those material properties and materials from analyzed literature exhibiting desired properties.
Originality/value
With large research addressing firefighter PPE, only limited studies focus specifically on gloves. Thus, this study provides a literature analysis covering material selection and testing for gloves. A consolidated firefighter gloves material specification document, which does not appear to be available in the literature, will provide a foundation for the development and characterization of firefighter gloves to better serve the functions along with ensuring user comfort.
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The aim of this review is to present together the studies on textile-based moisture sensors developed using innovative technologies in recent years.
Abstract
Purpose
The aim of this review is to present together the studies on textile-based moisture sensors developed using innovative technologies in recent years.
Design/methodology/approach
The integration levels of the sensors studied with the textile materials are changing. Some research teams have used a combination of printing and textile technologies to produce sensors, while a group of researchers have used traditional technologies such as weaving and embroidery. Others have taken advantage of new technologies such as electro-spinning, polymerization and other techniques. In this way, they tried to combine the good working efficiency of the sensors and the flexibility of the textile. All these approaches are presented in this article.
Findings
The presentation of the latest technologies used to develop textile sensors together will give researchers an idea about new studies that can be done on highly sensitive and efficient textile-based moisture sensor systems.
Originality/value
In this paper humidity sensors have been explained in terms of measuring principle as capacitive and resistive. Then, studies conducted in the last 20 years on the textile-based humidity sensors have been presented in detail. This is a comprehensive review study that presents the latest developments together in this area for researchers.
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Aysem Berrin Çakmakli, Ipek Gursel Dino, Esin Komez Daglioglu, Ekin Pinar and Pelin Yoncacı Arslan
This paper aims to discuss the potentials of interdisciplinary exercises that bring together art and design methodologies in expanding as well as redefining the given methods and…
Abstract
Purpose
This paper aims to discuss the potentials of interdisciplinary exercises that bring together art and design methodologies in expanding as well as redefining the given methods and principles of basic design in architecture education. The primary purpose is to improve the conventional, well-established principles and methodologies of basic design studios into fresh perspectives.
Design/methodology/approach
Focussing on the case study of a basic design studio assignment that translated Richard Serra's Verb List (1967-68) into space-generating operations, the authors analyse how a diagonal interdisciplinary approach to studio pedagogy opened up the basic design studio into the exploration of new concepts and approaches. The assignment encouraged architecture students to productively and creatively engage with a significant art historical work for the purposes of design thinking and exploration.
Findings
Findings reveal that the students explored the possible reciprocal influences between materials, actions, and issues of form and organisation, thereby operating in an interface between art, architecture and design surveying the possible interactions between these disciplines. Based on the outcome of this studio exercise, the authors argue that designing assignments that would bring together various and sometimes even conflicting approaches of different fields allow us to reassess and conceptualise anew the pedagogical aims and modi operandi.
Originality/value
The research is original in the ways in which it suggests many possibilities of dialogue, interaction and collaboration between art, design and architecture studios.
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Syed Amir Shah and tavis d. jules
After the electoral victory in 2018, the newly formed Pakistan Tehreek-e-Insaf (PTI) government presented its National Education Policy Framework, chalking out its priorities of…
Abstract
After the electoral victory in 2018, the newly formed Pakistan Tehreek-e-Insaf (PTI) government presented its National Education Policy Framework, chalking out its priorities of bringing more than 22 million out-of-school children to schools, improving educational quality, and introducing a uniform education system in the country. However, the government’s grand ambitions, transpired quickly, only to produce a draft of a new unified curriculum in 2020. This chapter investigates the newly formulated Single National Curriculum (SNC) in Pakistan by using the lens of Critical Cultural Political Economy of Education (CCPEE). To understand the endogenous and exogenous factors shaping the SNC, the chapter argues that securitization and neoliberalization are the significant factors informing the development and the production of the new curriculum.
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Zhe Liu, Yichen Yang and Xiuchen Wang
Stainless-steel electromagnetic shielding (EMS) fabrics are widely applied as protective materials against electromagnetic interference (EMI). However, these fabrics primarily…
Abstract
Purpose
Stainless-steel electromagnetic shielding (EMS) fabrics are widely applied as protective materials against electromagnetic interference (EMI). However, these fabrics primarily shield electromagnetic waves through reflection, which can lead to the formation of resonance effects that severely compromise their protective capabilities and potentially cause secondary electromagnetic pollution in the external environment.
Design/methodology/approach
In this paper, carbon nanotube fibers are added via spacing method to replace some stainless-steel fibers to impart absorbing properties to stainless-steel EMS fabric. The shielding effectiveness (SE) of the EMS fabrics across various polarization directions is analyzed. Additionally, a spacing arrangement for the carbon nanotube fibers is designed. The EMS fabric with carbon nanotube fibers is manufactured using a semi-automatic sample loom, and its SE is tested using a small window method test box in both vertical and horizontal polarization directions.
Findings
According to the experimental data and electromagnetic theory analysis, it is determined that when the spacing between the carbon nanotube fibers is less than a specific distance, the SE of the stainless-steel EMS fabric significantly improves. The fabric exhibits stable absorbing properties within the tested frequency range, effectively addressing the issue of secondary damage that arises from relying solely on reflective shielding. Conversely, as the spacing between the carbon nanotube fibers exceeds this distance, the SE diminishes. Notably, the SE in the vertical polarization direction is substantially higher than that in the horizontal polarization direction at the same frequency.
Originality/value
This study provides a new path for the development of high-performance EMS fabrics with good wave-absorption characteristics and SE.
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Lynsey Anne Burke and Duncan Mercieca
This paper offers a reflection of a research process aimed at listening to young children's voices in their everyday school life through a play-based context in a Scottish school…
Abstract
Purpose
This paper offers a reflection of a research process aimed at listening to young children's voices in their everyday school life through a play-based context in a Scottish school. Throughout the research process, the complexity of conducting this research was kept in mind as listening to children's voices presents methodological and conceptual difficulties and tensions. Reflecting on the research process after the data was collected, the process was critiqued using Deleuze-Guattarian ideas. The critique aims at opening and challenging each researcher, allowing them to think-again about the next research project aimed at listening to children's voices.
Design/methodology/approach
The research involved an observation study that took place over one week in a primary school in Central Scotland. As part of the educators' approach to play-based pedagogy, children had the opportunity to engage in free play throughout the day. Observations were chosen as the main approach to “capture” children's voices in their natural settings.
Findings
The empirical research brought forth two main ideas, that of children as agents, and how children amplify their voices through play. The reflective part offers the possibility of understanding the intensities and forces when conducting such research and the possibilities of engaging with these.
Originality/value
This paper offers a critique of research aimed at listening to children's voices. The aim is not to limit engagement in researching children's voices but to open, or make complex, such processes.
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S. Raja Balasaraswathi and Jonalee D. Bajpai
Ultrasonic welding is an emerging apparel manufacturing technique. However, the applications are widely explored in the field of technical textiles, with less exploration in the…
Abstract
Purpose
Ultrasonic welding is an emerging apparel manufacturing technique. However, the applications are widely explored in the field of technical textiles, with less exploration in the apparel endues. The purpose of this study is to explore the application of ultrasonic welding in apparel by analyzing the impacts of different parameters.
Design/methodology/approach
This study analyzed the influence of ultrasonic welding parameters, including pressure, welding speed and ultrasonic power on the seam performances (seam strength, seam bursting strength, seam thickness and seam stiffness). The parameters are optimized using Box–Behnken experimental design to achieve better seam performances.
Findings
The properties of ultrasonic seams are influenced by welding and fabric properties. Ultrasonically welded seams showed better performances in the case of comfort properties of seams, whereas the functional properties are lesser compared to conventional seams.
Originality/value
The findings of the research clearly outline the level of influence of different parameters on the performance of the ultrasonically welded seams in knitted fabrics, which can greatly help in applying ultrasonic welding manufacturing methods in apparel manufacturing.
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Sleep quality, a crucial parameter for health and life performance, is affected by mattress components; particularly mechanical and thermal comfort management ability of the upper…
Abstract
Purpose
Sleep quality, a crucial parameter for health and life performance, is affected by mattress components; particularly mechanical and thermal comfort management ability of the upper layers. The aim of this study is to investigate effects of quilted mattress ticking fabric material (polyester, polypropylene, viscose, lyocell and their blends) on thermal comfort of the bedding system by objective and subjective measurements.
Design/methodology/approach
The permeability (air and water vapour), heat transfer, water absorption, transfer and drying behaviours of knitted quilted fabrics which influence the thermal comfort of the bedding system were investigated. Subjective coolness and dampness evaluations were gathered by forearm and hand-palm tests to provide more realistic discussion in light of fabric characteristics.
Findings
According to the results, polypropylene can be suggested for winter use with its higher air and water vapour permeabilities, lower thermal absorption and conductivities and warmer evaluation results. Lyocell can be suggested for summer use with also high permeabilities, higher thermal absorption and conductivities and cooler evaluation results. Polyester and viscose may also be considered for winter and summer in turn as a result of thermal feelings they create.
Originality/value
In addition to fabric thermal, permeability, liquid absorption and transfer properties, this study also includes subjective coolness and dampness evaluations which can provide realistic results regarding the coolness-to-touch and liquid transfer performances of mattress ticking fabrics. The relationships among objective and subjective data were investigated and the proposed subjective evaluation techniques can be used for different products.
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