Nowy sposób bielenia tkanin lnianych z zastosowaniem napromieniowania UV

The bleaching of greige linen woven fabric using ultraviolet irradiation on hydrogen peroxide impregnated samples was studied. The effect of a photoinitiator, sodium hydroxide, sodium peroxydisulphate for hydrogen peroxide, the irradiation time and distance between the fabric and ultraviolet light lamp on the samples’ whiteness, lightness, weight loss, moisture sorption and wettability properties was investigated. The UV/H2O2 bleaching process was optimised with the aid of Box-Behnken experimental design and three optimum recipes were achieved. As a result of the study, a novel bleaching process using ultraviolet irradiation and hydrogen peroxide for greige linen woven fabric was developed which saves on energy and time.Badano bielenie tkanin lnianych impregnowanych nadtlenkiem wodoru z zastosowaniem promieniowania ultrafioletowego. Badano wpływ fotoinicjatora, wodorotlenku sodu, nadsiarczanu sodu, nadtlenku wodoru, czasu naświetlania i odległości pomiędzy tkaniną a lampą UV na stopień bieli, jasność, utratę masy, sorpcję wilgoci i właściwości zwilżające. Proces bielenia UV/H2O2 zoptymalizowano przy pomocy metody Box-Behnkena. Uzyskano trzy optymalne receptury. W wyniku badań opracowano nowy proces bielenia tkanin lnianych, który pozwala na oszczędność energii i czasu

Usage of commercial cellulases in biopolishing of viscose fabrics [Viskon kumaşlarin bio-parlatilmasinda ticari selülaz enzimlerinin kullanimi]

Cellulases which have been in use for a long time in textile finishing were studied deeply. It is well known that cellulases can hydrolyze cotton, jute, linen, ramie and other cellulose based fiber and ensure a clean polished textile surfaces. Moreover cellulase enzyme is also used for worn and stone washed effect in denim cloths. It is possible to expand its usages. But there is a draw back in the use of cellulases for biopolishing of viscose based fabrics. Although strength loss during biopolishing of viscose fabrics was evident, the pilling and fuzz of surface did not decreased sufficiently. Because of this dilemma, a statistical research was carried out with the use of different commercial cellulase enzymes in different time and concentration. It was found that the best results were obtained from the use of CBH based Cellulase

Yellowing tendency of ozonated cotton fabric and ways to prevent this undesirable side effect

WOS: 000271012500011This paper provides a general framework for studying the yellowing tendency of ozonated cotton fabric. Yellowing tendency of ozonated cotton fabric and ways to prevent this situation was examined extensively. For this purpose, five different treatments (hot/cold rinsing, washing, reductive washing, catalase treatment) were performed after ozonation. It was found that performing any kind of treatment was significantly important for preventing yellowing of ozonated cotton fabric during storage

Ozone treatment of Angora rabbit fiber

WOS: 000260197100008The aim of this Study was to investigate a novel bleaching technique for Angora rabbit fiber. For this purpose, a detailed investigation on the role of the fiber moisture, pH. and treatment time during ozonation was carried out. Also, the effect of ozonation on the dyeing properties of Angora rabbit fibers was researched. Consequently, it was found that ozonation improved the degree of whiteness and dyeability of Angora rabbit fiber. (C) 2008 Elsevier Ltd. Ail rights reserved.Department of Materials Science and Engineering at the Faculty of Engineering and Architecture of the University of AnadoluAnadolu UniversityWe thank the Department of Materials Science and Engineering at the Faculty of Engineering and Architecture of the University of Anadolu for the SEM photographs and Our students Kemal Ozevin and Ozgur Atalay for their kind help during the experiments

Ozone bleaching of denim fabrics

Classic denim jeans are generally fabrics having indigo-dyed warp threads. Depending on the desired effect, a bleaching process can be carried out for denim fabrics. Suitable alternatives for oxidative bleaching with sodium hypochlorite and potassium permanganate are not currently available. Some potential alternatives (e.g., peroxide, glucose, and enzymatic bleaching with laccase) are relatively expensive. In this paper, ozonation of denim fabric was investigated as an ecological and practical bleaching alternative. Due to its effective oxidizing potential, denim fabric was treated with ozone; sufficient bleaching results were obtained in a very short time