Nowadays, interests of ultraviolet(UV) protection increased, since the UV dosage on the earth surface has increased over years. Overdose of UV can cause various skin, eye, and even DNA damages. Therefore, it is need to develop a proper mean to protect human skin and eye from UV radiation. In this st...
Nowadays, interests of ultraviolet(UV) protection increased, since the UV dosage on the earth surface has increased over years. Overdose of UV can cause various skin, eye, and even DNA damages. Therefore, it is need to develop a proper mean to protect human skin and eye from UV radiation. In this study, the UV protective effect of green tea extract dyed fabrics with various fiber types were examined. Green tea has an active moiety called 'catechin' having benzene rings in its structure, which would exert a proper UV protective property. Green tea dyed fabrics showed the increase in UV protection, and silk showed the highest increase in UV protection (from 52.2% to 84.5% in UV-A, from 66.1% to 90% in UV-B). The order of UV-A protection increase is silk, wool, nylon and acrylic, PET, and cotton. The order of UV-B protection increase is silk nylon, wool, acrylic, cotton, and PET. In case of silk and nylon, the UV protection property gradually increased as the concentration of green tea extract increased. As a result, it was proven that green tea extract dyeing can improve UV protection property of dyed fabrics in environment-friendly and biocompatible manners.
Nowadays, interests of ultraviolet(UV) protection increased, since the UV dosage on the earth surface has increased over years. Overdose of UV can cause various skin, eye, and even DNA damages. Therefore, it is need to develop a proper mean to protect human skin and eye from UV radiation. In this study, the UV protective effect of green tea extract dyed fabrics with various fiber types were examined. Green tea has an active moiety called 'catechin' having benzene rings in its structure, which would exert a proper UV protective property. Green tea dyed fabrics showed the increase in UV protection, and silk showed the highest increase in UV protection (from 52.2% to 84.5% in UV-A, from 66.1% to 90% in UV-B). The order of UV-A protection increase is silk, wool, nylon and acrylic, PET, and cotton. The order of UV-B protection increase is silk nylon, wool, acrylic, cotton, and PET. In case of silk and nylon, the UV protection property gradually increased as the concentration of green tea extract increased. As a result, it was proven that green tea extract dyeing can improve UV protection property of dyed fabrics in environment-friendly and biocompatible manners.
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가설 설정
1. Wool showed the highest dyeability followed by silk, cotton, nylon, acrylic. PET was hardly dyed by green tea extract.
2. Green tea extract dyeing can effectively increase the UV protection property of dyed fabrics.
4. Wool fabrics showed a best dyeability of green tea extract. However, the maximum increase of UV protection property was observed in silk among tested fabrics.
5. In case of silk, as the concentration of green tea extract increasede the UV protection property increased gradually.
6. Green tea extract dyeing can be used in developing UV-protective fabrics in environmental-friendly and biocompatible manners.
제안 방법
Silk and nylon was dyed at the various concentrations and UV protection of silk and nylon were measured to know the relationship between green tea extract uptake and UV protection ability. Silk and nylon were chosen to study the concentration dependent UV protection because these two fabrics showed good increases in UV protection property after treating them in 100% green tea extract bath.
The purposes of this study are identifying the dyeability and the UV protection property of green tea dyed fabrics, defining the difference in dyeability and UV protection property of green tea dyed fabrics over different fiber types, and examining the optimum concentration of green tea extract bath in dyeing various fabrics. The environmental friendliness and biocompatibility of developed green tea dyed fabrics for UV protection would be another beneficial characteristic sinceonly synthetic UV protection materials such as titanium oxidez zinc oxide, and benzophenones have been used as UV protector in textile application and it is hard to apply these materials in natural fabrics15-19) There have been some studies related to UV protection of green tea extract dyed fabrics, however, it is restricted only in cotton and Hanji21) In this study, the dyeability of various natural and synthetic fabrics in green tea extract bath in the relation with the UV protection property of dyed fabrics.
Therefore, UV protection measurement of silk and nylon was done according to the different green tea batch concentration, 20, 40, 60, 80, and 100%. UV protection of wool, cotton, acrylic, and PET were measured in the condition of undyed and 100% green tea batch concentration.
100℃. To find out the effect of dye bath concentration on the dyeability and UV protection property, the green tea extract solution was diluted 20%z 40%, 60%, and 80% by water and this green tea extract dye bath cone, was used in this study.
대상 데이터
Bosung, Korea. Cotton, silk, nylon, PET, wool, and acrylic fabrics were purchased from KATRI, Seoul, Korea. The property of each fabrics are shown in Table 1.
Green tea powder were purchased from Bosung-Dawon, Bosung, Korea. Cotton, silk, nylon, PET, wool, and acrylic fabrics were purchased from KATRI, Seoul, Korea.
성능/효과
3. Fabrics having amide moiety such as wool, silk, and nylon showed a better dyeability by green tea extract and showed a better UV protection property.
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