Abstract
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.
Highlights
Terry Towel fabrics are generally used many places such as bathrooms, beaches, pools and wet surfaces etc. that are wet and moist areas and used for wearing such as terry sock and sweat-shirt
The performance of terry fabrics is primarily evaluated by its absorbency that refers to both the rate at which fabric absorbs the water i.e. dynamic water absorbency, and the total water retention ability of the fabric; static water absorption [1]
The purpose of this study is to investigate the effect of ozone bleaching and desizing process on the whiteness and water absorbency of %100 cotton terry fabrics and to compare the results with those of conventional bleaching and desizing method
Summary
Terry Towel fabrics are generally used many places such as bathrooms, beaches, pools and wet surfaces etc. that are wet and moist areas and used for wearing such as terry sock and sweat-shirt. Terry Towel fabrics are generally used many places such as bathrooms, beaches, pools and wet surfaces etc. Foreign matter, which is found in other raw cotton fabrics such as oils, waxes, pectins and natural coloring materials, adversely affects many properties of the fabric such as water absorption, dyeing and so on. Removal of these foreign substances is accomplished by conventional processes such as acid-scale enzyme desizing, alkali hydrophilization, sodium hypochlorite or hydrogen peroxide bleaching to make the fabric more absorbent and bleachable. Many textile products, especially cotton fabrics, have been proposed to be more environmentally friendly and more economical than water
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