Natural Dyeing and UV Protection of Raw and Bleached/Mercerised Cotton
Dyeing with natural dyes extracted from curcuma, green tea, avocado seed, pomegranate peel and horse chestnut bark was studied to evaluate the dyeability and ultraviolet (UV) blocking properties of raw and bleached/mercerised cotton fabrics. 20 g/l of powdered plant material was extracted in distill...
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| Format: | Article |
| Language: | English |
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University of Ljubljana Press (Založba Univerze v Ljubljani)
2017-05-01
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| Series: | Tekstilec |
| Subjects: | |
| Online Access: | http://www.tekstilec.si/wp-content/uploads/2017/06/126-136.pdf |
| _version_ | 1797714069393768448 |
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| author | Čuk Nina Gorjanc Marija |
| author_facet | Čuk Nina Gorjanc Marija |
| author_sort | Čuk Nina |
| collection | DOAJ |
| description | Dyeing with natural dyes extracted from curcuma, green tea, avocado seed, pomegranate peel and horse chestnut bark was studied to evaluate the dyeability and ultraviolet (UV) blocking properties of raw and bleached/mercerised cotton fabrics. 20 g/l of powdered plant material was extracted in distilled water and used as a dyeing bath. No mordants were used to obtain ecologically friendly finishing. The colour of samples was measured on a refl ectance spectrophotometer, while UV-blocking properties were analysed with UV-Vis spectrophotometer. The results showed that dyeing increased UV protection factor (UPF) to all samples, however much higher UPF values were measured for the dyed raw cotton samples. The highest UPF values were obtained on both cotton fabrics dyed with pomegranate peel and green tea extracts, giving them excellent protective properties (UPF 50+). The lowest UPF values were obtained by dyeing cotton with avocado seed extract and curcumin. Dyeing with selected dyes is not stable to washing, so the UV-blocking properties worsen after repetitive washing. However, raw cotton samples retain their very good Uvblocking properties, while bleached/mercerised cotton fabrics do not provide even satisfactory UV-blocking properties. No correlation between CIE L*a*b*, K/S and UPF values were found. |
| first_indexed | 2024-03-12T07:46:29Z |
| format | Article |
| id | doaj.art-0732fd898b8745b295a08050c910dc2d |
| institution | Directory Open Access Journal |
| issn | 0351-3386 2350-3696 |
| language | English |
| last_indexed | 2024-03-12T07:46:29Z |
| publishDate | 2017-05-01 |
| publisher | University of Ljubljana Press (Založba Univerze v Ljubljani) |
| record_format | Article |
| series | Tekstilec |
| spelling | doaj.art-0732fd898b8745b295a08050c910dc2d2023-09-02T20:55:39ZengUniversity of Ljubljana Press (Založba Univerze v Ljubljani)Tekstilec0351-33862350-36962017-05-0160212613610.14502/Tekstilec2017.60.126-136Natural Dyeing and UV Protection of Raw and Bleached/Mercerised CottonČuk Nina0Gorjanc Marija1University of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerčeva 12, 1000 Ljubljana, SloveniaUniversity of Ljubljana, Faculty of Natural Sciences and Engineering, Aškerčeva 12, 1000 Ljubljana, SloveniaDyeing with natural dyes extracted from curcuma, green tea, avocado seed, pomegranate peel and horse chestnut bark was studied to evaluate the dyeability and ultraviolet (UV) blocking properties of raw and bleached/mercerised cotton fabrics. 20 g/l of powdered plant material was extracted in distilled water and used as a dyeing bath. No mordants were used to obtain ecologically friendly finishing. The colour of samples was measured on a refl ectance spectrophotometer, while UV-blocking properties were analysed with UV-Vis spectrophotometer. The results showed that dyeing increased UV protection factor (UPF) to all samples, however much higher UPF values were measured for the dyed raw cotton samples. The highest UPF values were obtained on both cotton fabrics dyed with pomegranate peel and green tea extracts, giving them excellent protective properties (UPF 50+). The lowest UPF values were obtained by dyeing cotton with avocado seed extract and curcumin. Dyeing with selected dyes is not stable to washing, so the UV-blocking properties worsen after repetitive washing. However, raw cotton samples retain their very good Uvblocking properties, while bleached/mercerised cotton fabrics do not provide even satisfactory UV-blocking properties. No correlation between CIE L*a*b*, K/S and UPF values were found.http://www.tekstilec.si/wp-content/uploads/2017/06/126-136.pdfUV protectiondyeingnatural dyescotton |
| spellingShingle | Čuk Nina Gorjanc Marija Natural Dyeing and UV Protection of Raw and Bleached/Mercerised Cotton Tekstilec UV protection dyeing natural dyes cotton |
| title | Natural Dyeing and UV Protection of Raw and Bleached/Mercerised Cotton |
| title_full | Natural Dyeing and UV Protection of Raw and Bleached/Mercerised Cotton |
| title_fullStr | Natural Dyeing and UV Protection of Raw and Bleached/Mercerised Cotton |
| title_full_unstemmed | Natural Dyeing and UV Protection of Raw and Bleached/Mercerised Cotton |
| title_short | Natural Dyeing and UV Protection of Raw and Bleached/Mercerised Cotton |
| title_sort | natural dyeing and uv protection of raw and bleached mercerised cotton |
| topic | UV protection dyeing natural dyes cotton |
| url | http://www.tekstilec.si/wp-content/uploads/2017/06/126-136.pdf |
| work_keys_str_mv | AT cuknina naturaldyeinganduvprotectionofrawandbleachedmercerisedcotton AT gorjancmarija naturaldyeinganduvprotectionofrawandbleachedmercerisedcotton |