scholarly journals Improving the ultraviolet protection factor of textiles through mechanical surface modification using calendering

2021 ◽  
pp. 004051752110466
Author(s):  
Alicia Bernhard ◽  
Barnaby Caven ◽  
Tom Wright ◽  
Eduard Burtscher ◽  
Thomas Bechtold
Keyword(s):  
Mechanical Properties ◽  
Surface Modification ◽  
Air Permeability ◽  
Ultraviolet Spectrophotometry ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Cover Factor ◽  
Modification Technique ◽  
Ultraviolet Protection ◽  
Mechanical Surface

The textile modification technique of calendering was used to change the cover factor of wearable textiles in order to improve the ultraviolet protection factor and decrease the amount of ultraviolet radiation transmitted through the fabric. Using optical microscopy and ultraviolet spectrophotometry, the quantifiable changes that occurred after repeated passes through the calender were measured. It was found that after one pass the uncovered area decreased by a factor of two and the ultraviolet protection factor increased by 200%. The thickness and air permeability of treated fabric decreased with repeated calendering. The bending stiffness remained nearly unchanged, and thus the mechanical properties were not altered substantially by the fabric compression.

Anti-ultraviolet properties of β-cyclodextrin-grafted cotton fabrics dyed by broadleaf holly leaf extract

2020 ◽  
Vol 90 (21-22) ◽  
pp. 2441-2453 ◽  
Author(s):  
Jinshu Liu ◽  
Xiaoyan Ma ◽  
Wenzhao Shi ◽  
Jianwei Xing ◽  
Chaoqun Ma ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Leaf Extract ◽  
Cotton Fabrics ◽  
Sodium Hypophosphite ◽  
Crosslinking Reaction ◽  
Ultraviolet Spectrophotometry ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Ultraviolet Protection ◽  
Macerated Extract

The aim of the study was to investigate the anti-ultraviolet properties of β-cyclodextrin-grafted cotton fabrics dyed with broadleaf holly leaf extract. Flavonoids were extracted from broadleaf holly leaf by maceration and a stoichiometry of 1:1 inclusion complex with β-cyclodextrin was formed. Characterized by the fluorescence spectrum and ultraviolet spectrophotometry, the fluorescence intensities and ultraviolet absorption of the macerated extract were enhanced by increasing the amount of cyclodextrin. Cotton fabrics were grafted with β-cyclodextrin through a crosslinking reaction based on citric acid in the presence of sodium hypophosphite then dyed with the macerated extract of broadleaf holly leaf used as a natural ultraviolet absorbent. The anti-ultraviolet property of fabrics dyed by a macerated extract was characterized in terms of the ultraviolet protection factor. It was noted that the cotton fabrics grafted with β-cyclodextrin exhibit enhanced anti-ultraviolet and wrinkle recovery properties compared to the unmodified samples and show an excellent durability against 30 washing cycles, accompanied by a loss of tensile strength.

Development and characterization of three-dimensional woven fabric for ultra violet protection

2018 ◽  
Vol 30 (4) ◽  
pp. 536-547
Author(s):  
Adeela Nasreen ◽  
Muhammad Umair ◽  
Khubab Shaker ◽  
Syed Talha Ali Hamdani ◽  
Yasir Nawab
Keyword(s):  
3D Structure ◽  
Three Dimensional ◽  
Air Permeability ◽  
Woven Fabrics ◽  
Woven Fabric ◽  
Protection Factor ◽  
Content Type ◽  
Ultraviolet Protection Factor ◽  
Ultraviolet Protection

Purpose The purpose of this paper is to investigate the effect of materials, three dimensional (3D) structure and number of fabric layers on ultraviolet protection factor (UPF), air permeability and thickness of fabrics. Design/methodology/approach Total 24 fabrics samples were developed using two 3D structures and two weft materials. In warp direction cotton (CT) yarn and in weft direction polypropylene (PP) and polyester (PET) were used. Air permeability, thickness and UPF testings were performed and relationship among fabric layers, air permeability, thickness and UPF was developed. Findings UPF and thickness of fabrics increases with number of fabric layers, whereas air permeability decreases with the increase in number of fabric layers. Furthermore, change of multilayer structure from angle interlock to orthogonal interlock having same base weave does not give significant effect on UPF. However, change of material from polyester (PET) to polypropylene (PP) has a dominant effect on UPF. Minimum of three layers of cotton/polyester fabric, without any aid of ultraviolet radiation (UV) resistant coating, are required to achieve good. Cotton/polyester fabrics are more appropriate for outdoor application due to their long-term resistance with sunlight exposure. Originality/value Long-term exposure to UV is detrimental. So, there is need of proper selection of material and fabric to achieve ultraviolet protection. 3D fabrics have yarns in X, Y as well as in Z directions which provide better ultraviolet protection as compared to two dimensional (2D) fabrics. In literature, mostly work was done on ultraviolet protection of 2D fabrics and surface coating of fabrics. There is limited work found on UPF of 3D woven fabrics.

scholarly journals A new development for determining the ultraviolet protection factor

2015 ◽  
Vol 45 (6) ◽  
pp. 1571-1586 ◽  
Author(s):  
J Campos Payá ◽  
P Díaz-García ◽  
I Montava ◽  
P Miró-Martínez ◽  
M Bonet
Keyword(s):  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
New Development ◽  
Ultraviolet Protection

scholarly journals Ultraviolet Protection by Fabric Engineering

2013 ◽  
Vol 2013 ◽  
pp. 1-6 ◽  
Author(s):  
Mukesh Kumar Singh ◽  
Annika Singh
Keyword(s):  
Areal Density ◽  
Woven Fabrics ◽  
Uv Protection ◽  
Comfort Level ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Wear Comfort ◽  
Ultraviolet Protection ◽  
Multifilament Yarns ◽  
Fabric Structures

Background. The increasing emission of greenhouse gases has evoked the human being to save the ozone layer and minimize the risk of ultraviolet radiation (UVR). Various fabric structures have been explored to achieve desired ultraviolet protection factor (UPF) in various situations. Objective. In this study, the effect of various filament configurations like twisted, flat, intermingled, and textured in multifilament yarns on fabric in different combinations is assessed in order to engineer a fabric of better ultraviolet protection factor (UPF). Methods. In order to engineer a fabric having optimum UV protection with sufficient comfort level in multifilament woven fabrics, four different yarn configurations, intermingled, textured, twisted, and flat, were used to develop twelve different fabric samples. The most UV absorbing and most demanding fibre polyethylene terephthalate (PET) was considered in different filament configuration. Results. The combinations of intermingled warp with flat, intermingled, and textured weft provided excellent UVR protection comparatively at about 22.5 mg/cm2 fabric areal density. The presence of twisted yarn reduced the UV protection due to enhanced openness in fabric structure. Conclusion. The appropriate combination of warp and weft threads of different configuration should be selected judiciously in order to extract maximum UV protection and wear comfort attributes in multifilament woven PET fabrics.

Influence of Metal Mordants Concentration to Improve UV Protection and Fastness Properties of Silk Fabric Dyed with Purple Corn Cob

2014 ◽  
Vol 1030-1032 ◽  
pp. 430-433
Author(s):  
Rattanaphol Mongkholrattanasit ◽  
Charoon Klaichoi ◽  
Pannarai Rug-Ngam ◽  
Monthon Nakpathom ◽  
Manat Paengsai ◽  
...  
Keyword(s):  
Uv Protection ◽  
Silk Fabric ◽  
Fastness Properties ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Metallic Salts ◽  
Ultraviolet Protection ◽  
Purple Corn ◽  
Protection Property ◽  
Silk Fabrics

In the present study, natural dye from cob of purple corn and various metallic salts have been used to identify the proper dyeing condition for attaining high quality natural dyeing along with imparting UV protection property to the dyed silk fabric. Silk fabrics dyed with cob of purple corn extract showed a violetish-pink shade, while those dyed with alum light violetish-pink shade colour. Silk substrates dyed with CuSO4 and FeSO4 gave a yellowish grey and violetish-gray colour, respectively. The fastness properties ranged from fair to good. The ultraviolet protection factor (UPF) values of silk fabric dyed with and without metal mordants ranged between very good and excellent.

Research on Pad-Dry Dyeing and Ultraviolet Protection of Silk Fabric Using Dyes Extracted from Laccifer lacca Kerr

2014 ◽  
Vol 1010-1012 ◽  
pp. 512-515
Author(s):  
Rattanaphol Mongkholrattanasit ◽  
Charoon Klaichoi ◽  
Monthon Nakpathom ◽  
Jitti Pattavanitch ◽  
Nattadon Rungruangkitkrai
Keyword(s):  
Stannous Chloride ◽  
Silk Fabric ◽  
Fastness Properties ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Colour Strength ◽  
Potential Applications ◽  
Ultraviolet Protection ◽  
Silk Fabrics ◽  
Concentration Levels

Silk fabric was dyed with the colourant extracted from Laccifer Lacca Kerr. by using post-mordanting process and pad-dry technique. The effect of metal mordantats at different mordant concentration levels on their colour strength was also investigated. Silk fabrics dyed with Laccifer Lacca extract showed a light pink shade, while those dyed with alum and stannous chloride produces pinkish-red colour. Silk mordanted with CuSO4 gave a purple red colour, while those dyed with FeSO4 had a reddish-gray colour. The fastness properties ranged from fair to good, while washing fastness was poor level. The ultraviolet protection factor (UPF) values of silk fabric dyed with and without metal mordants ranged between good and excellent for dyed fabric.The results confirmed that natural dyes from Laccifer Lacca Kerr. extract have potential applications for silk fabric dyeing and producing ultraviolet (UV) protective silk fabric.

Influence of wetness on the ultraviolet protection factor (UPF) of textiles: in vitro and in vivo measurements

2002 ◽  
Vol 18 (1) ◽  
pp. 29-35 ◽  
Author(s):  
Thilo Gambichler ◽  
Kathryn L. Hatch ◽  
Annelies Avermaete ◽  
Peter Altmeyer ◽  
Klaus Hoffmann
Keyword(s):  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
In Vivo Measurements ◽  
Ultraviolet Protection

scholarly journals Impact of Fabric Density, Color and Composition of Plain weave Fabric on Ultraviolet Protective Factor

2019 ◽  
pp. 13-15
Author(s):  
Marzia Islam ◽  
Tarifun Akter ◽  
Jannatul Ferdush ◽  
Kamrunnahar Kamrunnahar
Keyword(s):  
Protective Factor ◽  
Woven Fabric ◽  
Experimental Result ◽  
Ultraviolet Rays ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Fabric Density ◽  
Weave Fabric ◽  
Ultraviolet Protection

In thisstudy, the effect of fabric density and different colors (black and red) on ultraviolet protection factor of woven fabric investigated. The fabric of different composition (100% cotton, 60/40 CVC), two color (black, red) and various density (Ends per inch, Picks per inch) collected. Then UPF rating was measured by spectrophotometer in vitro method. Experimental result showed that higher the fabric density and weight; higher the protection from ultraviolet rays. Besides, it also revealed that black fabric has more UV protection ability than the red one. Another finding of this study is that polyester content increases the UPF value.

Ultraviolet Protection Properties of Single Jersey Knit Outerwear: Part I - Effect of Stretch

2016 ◽  
Vol 848 ◽  
pp. 191-194
Author(s):  
Chi Wai Kan ◽  
Kin Cheung ◽  
Rattanaphol Mongkholrattanasit
Keyword(s):  
Uv Protection ◽  
Experimental Results ◽  
Protection Factor ◽  
Ultraviolet Protection Factor ◽  
Ultraviolet Protection ◽  
Single Jersey

In this study, 6 commercially available single jersey knit outerwears were collected from the market which claimed to have ultraviolet protection factor of 25. In vitro method with the use of spectrophotometer was used for evaluating their ultraviolet protection properties under different stretch conditions. Experimental results revealed that the stretch would greatly reduce the UV protection properties of knit outwears.

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