Abstract
Far-infrared radiation (FIR) possesses various promising properties that are beneficial to an individuals’ health. Exploring the interaction between fiber shapes and FIR performance is thought to be a significant means to develop highly-efficient FIR textile products. In this study, a non-additive triangular polyamide (PA) fiber showed excellent FIR properties in both theoretical simulation and experimental verification aspects. The triangular PA fiber affords a higher probability to facilitate large optical path difference, improving both FIR absorption and emission. Textiles woven with the specific triangular PA fiber achieved a remarkable emissivity of 91.85% and temperature difference of 2.11 Celsius, which is obviously superior to the reference circular fiber (86.72%, 1.52 Celsius). Considering the low cost, environmental stability, facile fabrication, as well as being environmentally friendly, this non-additive triangular PA fiber has great potential for high-performance and cost-effective FIR textiles in the future.
Highlights
Far-infrared radiation (FIR), as an environmentally friendly and sustainable energy source, can be utilized in many functional textiles to provide thermal comfort and thermal therapy [1,2,3,4]
We propose a non-additive triangular PA fiber to explore the effect of fiber shape on FIR performance, which is expected to develop a convenient and efficient FIR textile technology
In order to improve the strength and performance of yarns were first bundled and in order to improve the strength and performance of FIR fabrics, six PA yarns were first sewn into a single yarn, and the lined-up yarn was knitted with elastic yarn to constitute the bundled and sewn into a single yarn, and the lined-up yarn was knitted with elastic yarn to whole FIRthe fabric, wherein the weavability the PA yarnofstill normality
Summary
Far-infrared radiation (FIR), as an environmentally friendly and sustainable energy source, can be utilized in many functional textiles to provide thermal comfort and thermal therapy [1,2,3,4]. According to the annual research and consultation report, a huge commercial market of FIR textile products is emerging, which is expected to explode in the near future. As an FIR textile product, Celliant® has been classified as a medical device and general wellness product by the U.S Food and Drug Administration (FDA), which will promote wide commercial cooperation with numerous brands in different areas. FIR textiles are always considered as an integration of therapeutic and thermal-protective segments, which have been widely used for various kinds of healthcare applications, such as warmth retention [8,9,10], relief from inflammation [11,12], wound healing [13,14], weight loss [15,16] and relief from aching
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