| Titre : |
Allium cepa peel waste : A sustainable solution for antibacterial leather dyeing with gs powder mordanting |
| Type de document : |
texte imprimé |
| Auteurs : |
Sathya Ramalingam, Auteur ; Swethashree Rajendran, Auteur ; Ambika Kumaresan, Auteur ; Gladstone Christopher Jayakumar, Auteur ; Alagumuthu Tamil Selvi, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 107-118 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Antibactériens
Bacillus subtilis
Caractérisation
Colorants végétaux
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Teinture
Déchets végétaux -- Recyclage
Escherichia coli
Extraction (chimie)
Oignons et constituants
Réflectance
Solidité de la couleur
Stabilité thermique
Taille des particules
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Using natural dyes rather than synthetic dyes is an option that can be pursued to achieve sustainability in leather dyeing. The main disadvantage of natural dyeing is poor wet and dry rub fastness and the requirements of metal mordants for fixing. In this work, onion peel waste is the chosen raw material to produce natural dye for leather dyeing without metal mordant. Adding commercial syntans and vegetable tannins with the onion peel dye in the post tanning process produces good quality dyed leather without using any mordants. The optimal particle size of eco-friendly onion peel dye was extracted from onion peel (Allium cepa) using a modified aqueous extraction method. The extracted dye was examined by various instrumental techniques to characterize the functional groups by Fourier transform infrared spectroscopy (FT-IR), optical properties by UV-VIS spectrophotometry, size by Malvern Instruments, and thermal stability by Thermogravimetric Analysis (TGA). The results express the suitability for application in the leather dyeing process. The extracted dye was analysed for the antibacterial activity towards Bacillus subtilis and Escherichia coli, and the results revealed that the natural dye has an antibacterial effect Crust leather dyed only with extracted dye showed poor dye |
| Note de contenu : |
- MATERIALS AND METHODS : Sample collection - Materials and methods - Preparation and extractio of dye - Characterization of the extrated dye - Anti-bacterial activity - Leather dyeing application - Photographic images of the leather surface and cross action - Measurement of reflectance of colored leather - Fastness property of colored leather - Dye leaching analysis - Dye exhaustion studies - Organoleptic properties
- RESULT AND DISCUSSION : Fourier Transformation Infrared Spectroscopy (FTIR) analysis - Thermal stability of onion peel dye - Particle size of the onion peel dye - Anti-bacterial activity - Natural dyeing with mordants - Optimisation of leather dyeing process using onion peel extract - Color coordinates measurement of dyed leathers - Color fastness measurement - The strength properties of the dyed leather - Dye leaching analysis - Orgnoaleptic properties measurement
- Table 1 : Post-tanning recipe for the production of garment type of leather
- Table 2 : Dyeing process mordanting with GS powder and phenolic syntan
- Table 3 : Color coordinates of the dyed leather
- Table 4 : Color fastness properties of the onion peel dye treated leather
- Table 5 : Strength properties of the onion peel dyed leather |
| DOI : |
https://doi.org/10.34314/racatm26 |
| En ligne : |
https://drive.google.com/file/d/18QUv3NkhQoLrvZ1et8Gkzhh3yjwDEX9p/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40617 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 3 (03/2024) . - p. 107-118
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