UV protection performance of textiles affected by fiber cross-sectional shape

Abstract

In this study, a model was set up for simulating the effects of varying fiber cross-sectional shapes on ultraviolet protection of fibers. The fiber diameter and fiber type were also involved in the model setting. Experiments of diffuse reflectance spectra measurement on natural (wool, cotton, silk), regenerated (bamboo viscose) and synthetic (polyester, nylon) fibers were conducted to verify the model predicted results. When a more complex shape was assumed as the fiber cross-section for model calculation, the predicted results have a better agreement with the actual results. The effects on ultraviolet absorption from fibers with different cross-sectional shapes were investigated at a single fiber, fiber bundle and yarn levels. With the same material, when the fiber cross-sectional area and the areal coverage of a single fiber were constant, the triangular shape had the lowest ultraviolet transmittance and the highest ultraviolet reflectance for a single fiber and also for a fiber bundle. The difference of fiber cross-sectional shapes was also significant in the ultraviolet protection of a single yarn.

Manufacturing and Properties of Various Ceramic Embedded Composite Fabrics for Protective Clothing in Gas and Oil Industries Part I: Anti-Static and UV Protection with Thermal Radiation

“…ZnO NPs-coated fabric exhibited superior UV protection to the regular one [11,12,14]. In addition, many studies [15][16][17][18][19] have been conducted to increase the UV protection of textiles using a range of methods. Kursun et al [15] examined the UV property of nylon and PET materials treated with various absorbers.…”

“…They reported a good correspondence between the experimental and theoretical values. Yu et al [17] reported that fiber cross-sectional shape was critical in the UV protection of constituent yarn. Katangur et al [18] reported a new formulation for the ZnO/TiO 2 NPs-embedded UV-resistant coating applicable to the Kevlar fabric.…”

A numerical approach to evaluate the personal radiative thermal management of textiles part one: Mid-infrared transmittance, reflection and absorption

“…Much of the current research on the optical performance of the textile structure has paid particular attention to either the UV [20,21,24] or far-infrared [25] wavelength range. According to their findings, there are many factors that influence the optical properties of textiles, including the fibre type [6,7,23], fibre cross-section [25,26], fibre diameter, yarn diameter, and textile porosity [6,11,27,28]. Therefore, the structural parameters of the textile are key variables that affect the light path for the reflection, emission, and transmission.…”

Titanium dioxide release behavior during wash of UV-protective garments by total reflection X-ray fluorescence

“…Several factors that may affect the UPF of a garment have already been studied, such as the fiber from which the fabric is made, natural pigmentation, the yarn structure of the fabric, the type of weft and warp, whether plain or knitted fabric, fabric weight and thickness, and fabric dyeing and fabric tension. [5][6][7][8][9][10][11][12][13] The Brazilian Regulatory Standard 16695 establishes that, for labeling purposes, clothes meant for sun protection must be classified according to the UPF range shown in Table 1. 14 The UPF ratings are achieved through titanium dioxide (TiO 2 ) nanoparticle incorporation, which is used as a coating on the fabric or inserted into the composition of the yarns.…”