Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed Cotton
Direct disazo dyes, R-salt derivatives, were synthesized and examined. The dyes were prepared by coupling of appropriate components with tetrazotized diacyl derivatives of aromatic diamines. Derivatives of dicarboxylic acids with the general formula HOOC―(CH2)n―COOH (n = 0 ÷ 4) were used as acylatin...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2017-05-01
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| Series: | Journal of Natural Fibers |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/15440478.2016.1212296 |
| _version_ | 1797676811792941056 |
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| author | Krzysztof Wojciechowski Malgorzata Jedrzejczak |
| author_facet | Krzysztof Wojciechowski Malgorzata Jedrzejczak |
| author_sort | Krzysztof Wojciechowski |
| collection | DOAJ |
| description | Direct disazo dyes, R-salt derivatives, were synthesized and examined. The dyes were prepared by coupling of appropriate components with tetrazotized diacyl derivatives of aromatic diamines. Derivatives of dicarboxylic acids with the general formula HOOC―(CH2)n―COOH (n = 0 ÷ 4) were used as acylating agents. Photochemical degradation rates of dyes on dyed cotton fabric were studied. Compositions of azo-hydrazone tautomers, their aggregates, and their decay rates in UV-Vis light were determined. It was assumed that the length of aliphatic chain in the molecule affects the rate of its photochemical degradation T1/2, tautomeric composition, and dyes aggregation in azo and hydrazo forms. |
| first_indexed | 2024-03-11T22:35:45Z |
| format | Article |
| id | doaj.art-4759e2ad5b0442aca969aa29ffcfc3a7 |
| institution | Directory Open Access Journal |
| issn | 1544-0478 1544-046X |
| language | English |
| last_indexed | 2024-03-11T22:35:45Z |
| publishDate | 2017-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Natural Fibers |
| spelling | doaj.art-4759e2ad5b0442aca969aa29ffcfc3a72023-09-22T14:19:05ZengTaylor & Francis GroupJournal of Natural Fibers1544-04781544-046X2017-05-0114334635610.1080/15440478.2016.12122961212296Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed CottonKrzysztof Wojciechowski0Malgorzata Jedrzejczak1Lodz University of TechnologyLodz University of TechnologyDirect disazo dyes, R-salt derivatives, were synthesized and examined. The dyes were prepared by coupling of appropriate components with tetrazotized diacyl derivatives of aromatic diamines. Derivatives of dicarboxylic acids with the general formula HOOC―(CH2)n―COOH (n = 0 ÷ 4) were used as acylating agents. Photochemical degradation rates of dyes on dyed cotton fabric were studied. Compositions of azo-hydrazone tautomers, their aggregates, and their decay rates in UV-Vis light were determined. It was assumed that the length of aliphatic chain in the molecule affects the rate of its photochemical degradation T1/2, tautomeric composition, and dyes aggregation in azo and hydrazo forms.http://dx.doi.org/10.1080/15440478.2016.1212296aggregationazo-hydrazone tautomerismdicarboxylic acids amidesdirect dyeslightfastnessphotochemical degradation on cotton |
| spellingShingle | Krzysztof Wojciechowski Malgorzata Jedrzejczak Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed Cotton Journal of Natural Fibers aggregation azo-hydrazone tautomerism dicarboxylic acids amides direct dyes lightfastness photochemical degradation on cotton |
| title | Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed Cotton |
| title_full | Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed Cotton |
| title_fullStr | Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed Cotton |
| title_full_unstemmed | Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed Cotton |
| title_short | Photochemical Degradation of Disazo Dyes, R-Salt Derivatives, on Dyed Cotton |
| title_sort | photochemical degradation of disazo dyes r salt derivatives on dyed cotton |
| topic | aggregation azo-hydrazone tautomerism dicarboxylic acids amides direct dyes lightfastness photochemical degradation on cotton |
| url | http://dx.doi.org/10.1080/15440478.2016.1212296 |
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