Studies on quinoline type dyes and their characterisation studies on acrylic fabric / Pik-Ling Lam in COLORATION TECHNOLOGY, Vol. 128, N° 3 (2012)

[article]  inCOLORATION TECHNOLOGY > Vol. 128, N° 3 (2012) . - p. 192-198 Titre : Studies on quinoline type dyes and their characterisation studies on acrylic fabric Type de document : texte imprimé Auteurs : Pik-Ling Lam, Auteur ; Chi-Wai Kan, Auteur ; Marcus Chun-Wah Yuen, Auteur ; Siu-Yung Cheung, Auteur ; Roberto Gambari, Auteur ; Kim-Hung Lam, Auteur ; Johnny Cheuk-On Tang, Auteur ; Chung-Hin Chui, Auteur Année de publication : 2012 Article en page(s) : p. 192-198 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Colorants Fibres acryliques Fluorescence Quinoléine Teinture -- Fibres textiles synthétiques Index. décimale : 667.3 Teinture et impression des tissus Résumé : Nitrogen heterocyclic fluorescent compounds and their possible dyeing pathway on acrylic fabrics was investigated. Their chemical spectral properties, including fluorescence and ultraviolet–visibility, were evaluated in this work. The colour fastness properties of these dyes attributable to light reflection and washing were examined. The CIE L*, a* and b* values after the dyeing process were studied and the colour fastness properties were also determined. Two quinoline derivatives showed stronger fluorescence properties and were also demonstrated to be non-cytotoxic towards human HaCaT skin keratinocytes at a reasonable dose. These results led to speculation that these two compounds could be further used as dyes in various textile applications. Note de contenu : - EXPERIMENTAL : Synthesis of alkoxy-substituted quinaldine - Dyeing - Optical property of fluorescent dyes - Visual effect of dyed acrylic samples - Reflectance and colour yield measurement - Evaluation of colour fastness to washing and light - In vitro toxicology test - RESULTS AND DISCUSSION : UV absorption spectra of alkoxy-substituted quinaldine - Fluorescent property of quinolone dye compounds - Visual performance of dyed acrylic fabrics - Reflectance of the dyed acrylic fabrics - Colour yield of the dyed acrylic fabrics - Colour fastness to washing - Colour fastness to light - Cytoxicity test of compounds 1 and 3 on human cells DOI : 10.1111/j.1478-4408.2012.00363.x Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15120 [article]

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Study of the cytotoxicity of reactive dyeing effluent treated by Fenton oxidation / Chung-Hin Chui in COLORATION TECHNOLOGY, Vol. 129, N° 6 (12/2013)  

[article]  inCOLORATION TECHNOLOGY > Vol. 129, N° 6 (12/2013) . - p. 398-402 Titre : Study of the cytotoxicity of reactive dyeing effluent treated by Fenton oxidation Type de document : texte imprimé Auteurs : Chung-Hin Chui, Auteur ; Kun-Wai Man, Auteur ; Wai-Fung Tsang, Auteur ; Pik-Ling Lam, Auteur ; Kelvin Sze-Yin Leung, Auteur ; Wai-Yeung Wong, Auteur ; Chi-Wai Kan, Auteur ; Kim-Hung Lam, Auteur Année de publication : 2013 Article en page(s) : p. 398-402 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorants réactifs -- Détérioration Décoloration Eaux usées -- Décontamination Fenton, Réaction de Oxydation Tests cutanés Tests de toxicité Toxicologie cellulaire Index. décimale : 667.3 Teinture et impression des tissus Résumé : Fenton oxidative wastewater treatment of CI Reactive Black 5 and CI Reactive Blue 19 effluent was performed after a simulated laboratory-scale dyeing process, and the cytotoxicity of the treated effluent was evaluated using human skin cell lines. Among the components for Fenton oxidation, the human skin cell results showed that iron(II)sulfate at 150 mm did not show any significant cytotoxic effect, while other components, such as Glauber's salt solution (20 g l−1; 14%), CI Reactive Black 5 (30 mg l−1; 24%), caustic soda (5 g l−1; 30%), CI Reactive Blue 19 (30 mg l−1; 32%), hydrogen peroxide (0.01 m) and soda ash (5 g l−1) showed cytotoxic potential; the reagent sodium sulfite (30 mm; 48%) exhibited the strongest cytotoxicity level. Fast decolorisation (>95%) was achieved within 10 min for CI Reactive Black 5, while for CI Reactive Blue 19 it took longer (1.5 h) to achieve the same decolorisation. Studies showed that decolorisation for both dyes followed second-order kinetics. In spite of the remarkable efficacy of the Fenton oxidation process in removing colour within a short period of time, the resulting treated wastewater (within a reaction time of 1.5 h) also showed cytotoxicity towards the human HaCaT skin keratinocyte cell line. This observation can be explained by the strong oxidant and intermediate species produced during the advanced oxidation process, and a treatment step using sodium sulfite and a prolonged residence time can help to reduce the cytotoxicity. Note de contenu : - EXPERIMENTAL : Reagents and instruments - Laboratory-scale dyeing process - Cytotoxicity tests - Study of decolorisation kinetics - RESULTS AND DISCUSSION : Study of dye decolorisation kinetics - Cytotoxicity tests DOI : 10.1111/cote.12055 En ligne : http://onlinelibrary.wiley.com/doi/10.1111/cote.12055/pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19738 [article]

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