Decreasing natural resources and increasing environmental destructions dispatch researchers to find more ecological solutions in material industry. Natural fibers have recently become an interesting topic as an alternative reinforcement material for fiber reinforced polymer composites for researchers. In this study; the effect of knitting density, natural fiber type, crack length, and fabric direction (wale or course) on the fracture strength and fracture toughness of laminated composites reinforced with natural fiber knitted fabric were investigated. For this aim, plain fabrics made of 50/50 bamboo/cotton, 50/50 viscose/cotton, and 50/50 modal/cotton blended yarns were knitted with three different knitting density. After that; bamboo/epoxy, viscose/epoxy, and modal/epoxy laminated composites were produced by using hand lay‐up method. Quasi‐static three‐point bending tests have been carried out on the single‐edge notched bending composite specimens, which have a crack in wale or course directions. Fractured surfaces investigated through the Scanning Electron Microscopy describing different failure mechanisms are also reported. Test results showed that fabric which knitted in cellulosic fibers, reinforced composites, had higher flexural strength and fracture toughness in the wale direction. It has also been observed that the knitting density and crack geometry affect the crack propagation behavior. POLYM. COMPOS., 40:217–228, 2019. © 2017 Society of Plastics Engineers
In this study, the color and color fastness properties of the dyed plain knitted fabrics made from 50/50 bamboo/cotton blended yarns with three different stitch lengths are investigated in comparison with those of the similar fabrics made from 50/50 conventional viscose/cotton and 50/50 modal/cotton blended yarns. Abrasion behaviors of the fabrics are assessed by measuring the weight loss and the color values after four different increasing abrasion cycles. The bamboo/cotton fabrics reveal the highest K/S and C* values, but the lowest L* values before abrasion. The lowest weight loss values are obtained for the bamboo/cotton fabrics. Regarding the color properties after abrasion, the bamboo/cotton fabrics show the highest K/S and C* values, but the lowest L* values as in the case of those obtained before abrasion. The highest color difference values (ΔE*) occurred between the beginning and the end of the abrasion test (20000 cycles) and are observed for the bamboo/cotton fabrics. The rubbing, wash and perspiration fastness results of the bamboo/cotton fabrics are found to be worse than those of the other fabrics having viscose/cotton and modal/cotton yarns. However, the highest light fastness results are obtained for the bamboo/cotton fabrics. From the color values after abrasion and the fastness results, it can be concluded that the bamboo/cotton fabrics having the better dyeing properties lose their color more easily than the other fabrics having the viscose/cotton and modal/cotton yarns. The results also indicate that stitch length affects the color values before abrasion and the weight loss and color values after abrasion.
Technical textiles take an important place in textile and apparel sector. In technical textiles, ultrasonic seaming method besides conventional seaming methods is one of the alternative methods used in seaming processes of functional textiles. In this study, the effects of ultrasonic seaming method in which needle and thread usage is not needed on waterproofing property of PU coated fabrics in comparison with conventional seaming methods were investigated. Sewn fabrics obtained with different seaming parameters were exposed to washing process and the waterproofing properties of these fabrics were tested considering before and after washing processes. The results evaluated in terms of seam type, fabric type, ultrasonic seaming velocity and washing process were statistically analyzed. According to the test results, waterproofing properties of ultrasonically sewn fabrics are higher than that of conventionally sewn fabrics. The difference between waterproofing values of ultrasonically and conventionally sewn fabrics are found to be statistically significant. It is determined that waterproofing property of the fabrics are in relation with the other parameters.
ÖZET: Dünyada bulunan doğal kaynakların bilinçsiz bir şekilde kullanılması, teknolojide meydana gelen gelişme, endüstrileşme ve hızlı nüfus artışı sonucunda kaynaklar hızla tükenmeye başlamıştır. Bu soruna tekstil ve hazır giyim endüstrisinden bakıldığında doğal kaynak tüketimini etkileyen en önemli problemin hızlı imalat ve hızlı giysi üretimi olduğu söylenebilir. Günümüzde hızlı moda, yüksek miktarda kaynak kullanılmasına, ucuz işçiliğe, yüksek miktarda atık oluşumuna ve çevre kirliliği meydana getiren bir sisteme dönüşmektedir. Bu nedenden dolayı bu sektörün çevresel açıdan performansının iyileştirilmesini sağlamak gerekmektedir. Yapılan bu çalışmada tekstil ve hazır giyim sektöründe sürdürülebilir moda kavramının araştırılmasının yanı sıra, yavaş moda, ekolojik moda ve geri dönüşüm konularına da yer verilmiştir.ABSTRACT: There has been depletion of resources due to the negligent use of natural resources in the world, the emerging development in technology, the process of industrialization and rapid population growth. If the problem is examined from view of textiles and clothing industry, the major problem, which affects the use of natural resources-is rapid manufacturing and fast clothing production. Now a days fast fashion turn into a system which leads to use of high amounts of resources, cheap labor, large quantities of waste and environmental pollution. Due to this reason, it is necessary to ensure improving the environmental performance of this sector. In this study, slow fashion, ecological fashion and recycling issues are also included as well as investigation of sustainable fashion concept in textile and apparel industries.
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.