| Titre : |
Henna–aluminum combination tannage : a greener alternative tanning system |
| Type de document : |
texte imprimé |
| Auteurs : |
A. E. Musa, Auteur ; Rathinam Aravindhan, Auteur ; Balaraman Madhan, Auteur ; Jonnalagadda Raghava Rao, Auteur ; B. Chandrasekaran, Auteur |
| Année de publication : |
2011 |
| Article en page(s) : |
p. 190-199 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Cuirs et peaux -- Analyse
Sulfate d'aluminium
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
Tannage végétal
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Development of cleaner technologies for leather manufacture is imperative for the sustenance of the tanning industry. In the present study, a combination tanning system based on a henna-aluminum tannage for the production of upper leathers as a cleaner alternative is presented. Extract from the leaves of widely distributed Lawsonia inerims (Henna) from Sudan has been evaluated for its tanning characteristics in a combination tanning system based on henna and aluminum sulfate. Aluminum-henna (Al-henna) leathers tanned using 2% Al2O3; followed by 20% henna resulted in shrinkage temperature above 95°C. The uptake of henna in henna-Al tanning system with henna (20%) followed by aluminum (2% Al2O3) has been found to be better than the tanning system of Al-henna. These leathers showed compact fibre structure, indicating that the tanning process did not bring about any major change or destruction on the fibre structure of the leathers. Surface colour values of henna-Al leathers resulted in darker shades with less red and more yellow components in the crust leathers. The combination tanning system provides significant reduction in the discharge of total dissolved solids in the wastewater. Henna-Al combination tanning system resulted in leathers with good organoleptic and strength properties. The work presented in this paper established the use of henna and aluminum combination tanning system as an effective alternative cleaner tanning methodology. |
| Note de contenu : |
- EXPERIMENTAL METHODS : Materials - Aqueous extraction of tannins from henna leaves - Preparation of basic aluminum sulfate solution - Henna and aluminum combination tannage - Measurement of hydrothermal stability of leathers - Physical testing and hand evaluation of leathers - Measurement of softness in leathers - Scanning electron microscopic analysis of leather samples - Analysis of spent liquors from tanning trials - Analysis of exhaustion of tanning spent liquors - Color measurements of control and experimental leathers - Evaluation of chemical constituents in leathers.
- RESULTS AND DISCUSSION : Optimization of combination tanning system using henna and aluminum - Performance of leathers organoleptic properties of leathers - Strength characteristics of experimental and control crust leathers - Softness measurements of henna-Al tanning system - Scanning electron microscopic analysis of leather samples - Reflectance measurements - Effect of surface color on control and experimental leathers - Chemical analysis of the crust leather - Environmental tolerability and spent liquor analysis. |
| En ligne : |
https://drive.google.com/file/d/1Gf6K3aai4yAs469aF02XfUDmHP8G4M0Z/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11718 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 6 (06/2011) . - p. 190-199
Aller sur edunet
Accueil
Henna–aluminum combination tannage : a greener alternative tanning system in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 6 (06/2011)
