Pectinase enzyme treatment subsequent to atmospheric air-or argon-plasma surface modification was applied in linen fabric preparation. Wettability by water drop test, wickability by thin layer wicking experiment, residual pectin content and colour of the fabrics were characterized. Results clearly proved that the efficiency of pectinase in improving linen water absorbency can be significantly enhanced by plasma pretreatment. Argon-plasma pretreatment followed by a Beisol PRO enzyme treatment reduced the wetting time considerably and resulted in a fabric surface that has been characterized by the lowest water contact angle (86.6°). All the applied treatments increased the energy of the fibre surface. The alkaline scoured, the argon-plasma treated and the argon-plasmapectinase treated samples have been characterized by the highest c total S values. Plasma treatment significantly decreased the whiteness and increased the yellowness of the raw fabrics. However, the enzyme treatment applied after the plasma treatment has overcome the colour differences.
İnsanlar tarih boyunca gerek günlük hayatta gerekse savaş anında korunma ihtiyacı hissetmişler ve bu ihtiyaçlarının sonucu olarak daha iyi korumayı sağlayacak malzemeleri bulabilmek için sürekli olarak yeni arayışlar içerisinde olmuşlardır. Balistik biliminin ortaya çıkması ile birlikte bu alandaki çalışmalar hız kazanmış ve tasarlanan ürünlerin istenilen ihtiyaçları karşılayıp karşılamadıklarının kontrolü daha fazla önem kazanmıştır. Balistik koruyuculuğun etkinliğinin test edilmesi için uluslararası alanda kullanılan çeşitli standartlar bulunmaktadır. Bu standartlar kapsamında balistik koruyucu ekipmanların ve giysilerin balistik performans testleri yapılmakta ve etkinlikleri belirlenmektedir. Bu çalışmada balistik koruma amaçlı tekstil materyalleri ve bunların balistik performanslarının tespitinde kullanılan test yöntemleri hakkında bilgi verilmeye çalışılmıştır.
Emergency tent is a basic human need and a critical determinant for survival and coping in the majority of crises. There are many reasons people might need temporary shelters. Natural disasters like hurricanes, earthquakes, floods, fires, and tornados are some of them. Millions of people around the globe have had their lives disrupted by these disasters. The environmental health conditions faced by people are largely affected by the conditions where they are obliged to live in the days, weeks or months after a disaster. The quality of emergency tent has a great impact on human health and wellbeing. Therefore, mechanical properties of a tent fabric will be vital for sufferers. Since these tents are used under natural environment, tent fabrics have to face with natural exposures that force the mechanical strength of the fabric. One of the most important of these effects is UV exposure. It is known that fabrics lose their strength under UV light. In this study ammonium dihydrogen phosphate (ADP) coated 100% cotton tent fabrics were aged under UV exposure (35 W/m 2) for 0, 250, 500 and 750 hours. Due to cellulose UV degradation mechanism exhibits oxidation of hydroxyl side groups and rupture of glycosidic bonds between cellulose units, tent fabric lost 40% of its tensile strength and 70% of its tearing strength compared to unaged fabric after 500 hours of UV aging process. FTIR (Fourier Transform Infrared Spectroscopy) analysis and SEM analysis were also held to investigate the degradation mechanism.
This study was designed to explore the relationship between sunlight exposure and the mechanical properties of paragliding fabrics which have different colors, densities, yarn counts, and coating materials. This study exposed 5 different colors of paragliding fabrics (red, turquoise, dark blue, orange, and white) to intense sunlight for 150 hours during the summer from 9:00 a.m. to 3:00 p.m. for 5 days a week for 5 weeks. Before and after the UV radiation aging process, the air permeability, tensile strength, tear strength, and bursting strength tests were performed. Test results were also evaluated using statistical methods. According to the results, the fading of the turquoise fabric was found to be the highest among the studied fabrics. It was determined that there is a significant decrease in the mechanical properties of the fabrics after sunlight exposure. After aging, the fabrics become considerably weaker in the case of mechanical properties due to the degradation in both the dyestuff and macromolecular structure of the fiber
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.