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Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body

Far infrared (FIR) textiles are a new category of functional textiles that have presumptive health and well-being functionality and are closely related to human thermo-physiological comfort. FIR exerts strong rotational and vibrational effects at the molecular level, with the potential to be biologi...

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Autores principales: Militký, Jiří, Křemenáková, Dana, Venkataraman, Mohanapriya, Večerník, Josef, Martínková, Lenka, Marek, Jan
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512359/
https://www.ncbi.nlm.nih.gov/pubmed/34641125
http://dx.doi.org/10.3390/polym13193309
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author Militký, Jiří
Křemenáková, Dana
Venkataraman, Mohanapriya
Večerník, Josef
Martínková, Lenka
Marek, Jan
author_facet Militký, Jiří
Křemenáková, Dana
Venkataraman, Mohanapriya
Večerník, Josef
Martínková, Lenka
Marek, Jan
author_sort Militký, Jiří
collection PubMed
description Far infrared (FIR) textiles are a new category of functional textiles that have presumptive health and well-being functionality and are closely related to human thermo-physiological comfort. FIR exerts strong rotational and vibrational effects at the molecular level, with the potential to be biologically beneficial. In general, after absorbing either sunlight or heat from the human body, FIR textiles are designed to transform the energy into FIR radiation with a wavelength of 4–14 μm and pass it back to the human body. FIR textiles can meet increased demand for light, warm, comfortable, and healthy clothing. The main aim of this research is to describe the procedure for creating the FIR reflective textile layer as part of multilayer textile structures that have enhanced thermal protection. To develop the active FIR reflecting surface, the deposition of copper nanolayer on lightweight polyester nonwoven structure Milife, which has beneficial properties of low fiber diameters, good shape stability and comfort, was used. This FIR reflective layer was used as an active component of sandwiches composed of the outer layer, insulation layer, active layer, and inner layer. The suitable types of individual layers were based on their morphology, air permeability, spectral characteristics in the infra-red region, and thermal properties. Reflectivity, transmittance, and emissivity were evaluated from IR measurements. Human skin thermal behavior and the prediction of radiation from the human body dependent on ambient conditions and metabolic rate are also mentioned. The FIR reflective textile layer created, as part of multilayer textile structures, was observed to have enhanced thermal protection.
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spelling pubmed-85123592021-10-14 Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body Militký, Jiří Křemenáková, Dana Venkataraman, Mohanapriya Večerník, Josef Martínková, Lenka Marek, Jan Polymers (Basel) Article Far infrared (FIR) textiles are a new category of functional textiles that have presumptive health and well-being functionality and are closely related to human thermo-physiological comfort. FIR exerts strong rotational and vibrational effects at the molecular level, with the potential to be biologically beneficial. In general, after absorbing either sunlight or heat from the human body, FIR textiles are designed to transform the energy into FIR radiation with a wavelength of 4–14 μm and pass it back to the human body. FIR textiles can meet increased demand for light, warm, comfortable, and healthy clothing. The main aim of this research is to describe the procedure for creating the FIR reflective textile layer as part of multilayer textile structures that have enhanced thermal protection. To develop the active FIR reflecting surface, the deposition of copper nanolayer on lightweight polyester nonwoven structure Milife, which has beneficial properties of low fiber diameters, good shape stability and comfort, was used. This FIR reflective layer was used as an active component of sandwiches composed of the outer layer, insulation layer, active layer, and inner layer. The suitable types of individual layers were based on their morphology, air permeability, spectral characteristics in the infra-red region, and thermal properties. Reflectivity, transmittance, and emissivity were evaluated from IR measurements. Human skin thermal behavior and the prediction of radiation from the human body dependent on ambient conditions and metabolic rate are also mentioned. The FIR reflective textile layer created, as part of multilayer textile structures, was observed to have enhanced thermal protection. MDPI 2021-09-28 /pmc/articles/PMC8512359/ /pubmed/34641125 http://dx.doi.org/10.3390/polym13193309 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Militký, Jiří
Křemenáková, Dana
Venkataraman, Mohanapriya
Večerník, Josef
Martínková, Lenka
Marek, Jan
Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body
title Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body
title_full Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body
title_fullStr Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body
title_full_unstemmed Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body
title_short Sandwich Structures Reflecting Thermal Radiation Produced by the Human Body
title_sort sandwich structures reflecting thermal radiation produced by the human body
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8512359/
https://www.ncbi.nlm.nih.gov/pubmed/34641125
http://dx.doi.org/10.3390/polym13193309
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