Ozone bleaching of cotton fabrics with the aid of ultrasonic humidifier

Bahtiyari, M. İbrahim; Benli, Hüseyin

doi:10.1007/s10570-016-0978-y

Cited by 20 publications

(12 citation statements)

References 12 publications

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“…As a result, treated cotton with ozone can be dyed with green walnut shells, and the colors of the natural dyed fabrics are good. Even if no mordanting agent is used in natural dyeing, the fastnesses are sufficient [42].…”

Section: The Photographs Of Fabrics Treated By Developed Methods (I: Omentioning

confidence: 99%

Use of Ozone in the Textile Industry

Körlü¹

2019

Textile Industry and Environment

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Wet processing of textile materials consumes a large amount of electricity, fuel, and water. Therefore, greenhouse gas emissions and contaminated effluent are environmental problem. The most of the governments in the world warn all the industrial sectors containing textile manufacturing to be careful about environmental pollution. Increasing in public awareness of environment and competitive global market forces the textile industry to manufacture textile products environmentally. Environmental pollution in textile wet processes can be reduced by four main ways. They are process optimization (reducing in water, chemical energy consumption, and time loss), use of ecofriendly chemicals, reuse of water, and new technologies like ozone and plasma technologies, transfer printing, enzymatic processes, etc. This chapter is about the use of ozone in the textile industry.

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Section: The Photographs Of Fabrics Treated By Developed Methods (I: Omentioning

confidence: 99%

Use of Ozone in the Textile Industry

Körlü¹

2019

Textile Industry and Environment

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“…These properties indicate that ozone can be used for bleaching and hydrophilization. A lot of work has been done in this area [6][7][8][9][10][11][12][13][14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…In previous studies of the researching effect of ozonation time, it was determined that as the time increased, the degree of whiteness of the fabric increased but the breaking strength decreased [6][7][8][9][10][11][12][13][14][15][16]. When the results were compared to conventional bleaching processes, it was seen that the highest whiteness degree and the lowest loss of strength are found in peroxide bleaching, the lowest whiteness degree and the highest loss of strength in hypochlorite bleaching [7,8,17].…”

Section: Introductionmentioning

confidence: 99%

“…When the results were compared to conventional bleaching processes, it was seen that the highest whiteness degree and the lowest loss of strength are found in peroxide bleaching, the lowest whiteness degree and the highest loss of strength in hypochlorite bleaching [7,8,17]. In some of the studies, it has been determined that desorption efficiency increases with increasing ozonation time, but ozone desizing process cannot reach the desizing efficiency in the conventional method even in the longest ozonation time [6,7,9]. The effect of ozonation time on optical brighteners was also investigated in a study.…”

Section: Introductionmentioning

confidence: 99%

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The Effects of Ozone Bleaching and Ozone Desizing Method on Whiteness and Water Absorption of 100% Cotton Terry Fabrics

Turhan¹

2018

IJMSA

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In this study, the effects of ozone desizing and bleaching on the hydrophilicity and whiteness of terry fabrics were investigated. The results were compared with those obtained after conventional desizing and bleaching (hydrogen peroxide bleaching). The test samples contain two side piled woven terry cloths of four different areal weights. The ozone desizing and bleaching process was carried out at fixed PH values (6) in four different ozonation times and two different ozone doses. The rate of water pickup in fabrics was 60%. It has been determined that as ozonation time and the ozone dose increase, the degree of whiteness and water absorption of the terry fabric increases. However, the increase in the ozonation time did not cause a significant change in the low ozone doses; the change in the ozonation time at high ozone doses is causing a marked change in the investigated properties of the towel fabric. The degree of hydrophilicity and whiteness achieved after ozonation was found to be close to the results obtained in conventional bleaching. However it was seen that although acceptable water absorbency was obtained by the ozone desizing method, these values were lower than those of the conventional desizing method. Ozone bleaching and desizing do not require the consumption of water, the consumption of heat energy, and the use of any chemical additive that harms the environment with its wastes. As a result, owing to ecofriendly, saving energy and acceptable fabric properties with regard to whiteness and absorptivity, ozone bleaching can be applied instead of the conventional bleaching and desizing method.

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“…Studies concerning the use of ozone for textile finishing have focused on bleaching of cellulosic fibres [3][4][5][6] and clearing of disperse dyed polyester [1,[7][8][9]. Although the industrial application of ozone in textile production is limited to denim washing, several laboratory-scale ozone applications have been reported in the literature for textile finishing.…”

Section: Introductionmentioning

confidence: 99%

Ozone utilisation for discharge printing of reactive dyed cotton

Yiğit

Eren

2017

Coloration Technology

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Environmental pollution is one of the major concerns of the textile finishing sector. The reduction or substitution of the harsh chemicals used during dyeing and printing processes is necessary. In this study, the use of ozone for the discharge printing process was examined in order to substitute the use of reductive agent and caustic soda by ozone gas. The reactive dyed cotton samples were wetted by water and some selected solutions at 25%, 40% and 60% pick up were used and subjected to ozone gas treatment. The gas flow rates were 5 and 10 l/min for 5 and 10 min treatment times, respectively. The results were compared with that of conventional discharge printed samples. Colour discharge (%), colour difference (DE), strength, washing and rubbing fastness and chemical oxygen demand (COD) values were compared and reported. Colour discharge increased at higher gas flow rates and prolonged treatment times. Although ozone printing could not attain the contour sharpness of conventional discharge printing, the addition of selected chemicals affected colour discharge and the contour sharpness. Strength tests did not show a significant decrease when using ozone treatment. Fastness tests results (washing and rubbing) were slightly higher compared with conventional discharge printed samples. COD values were much lower for ozone treatment compared with conventional discharge printing effluent. Consequently, it was demonstrated that ozone may be an environmentally friendly substitute for discharge printing. Coloration Technology Society of Dyers and ColouristsThis article was published online on 16 October 2017. Grammatical and formatting errors were subsequently identified. This notice is included in the online and print versions to indicate that both have been corrected [25 Jan 2018]. The scientific content of the article is unaffected.

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Ozone bleaching of cotton fabrics with the aid of ultrasonic humidifier

Cited by 20 publications

References 12 publications

Use of Ozone in the Textile Industry

Use of Ozone in the Textile Industry

The Effects of Ozone Bleaching and Ozone Desizing Method on Whiteness and Water Absorption of 100% Cotton Terry Fabrics

Ozone utilisation for discharge printing of reactive dyed cotton

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