| Titre : |
The preparation and application of a montmorillonite-based nanocomposite in leather making |
| Type de document : |
texte imprimé |
| Auteurs : |
Jianzhong Ma, Auteur ; Xinjiang Chen, Auteur ; Yun Chu, Auteur ; Zongsui Yang, Auteur |
| Année de publication : |
2003 |
| Article en page(s) : |
p. 131-134 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Absorption
Adsorption
Caractérisation
Eaux usées -- Epuration
Huiles et graisses
Maroquinerie
Matériaux -- Modifications chimiques
Montmorillonite
Sels d'ammonium
Température de retrait
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Montmorillonite (MMT) has been modified with a long chain quaternary ammonium salt through a cation exchange reaction. The extent of the exchange was characterised by XRD (X-ray Diffraction), FT-IR (Fourier Transform Infrared Spectroscopy) and by the determination of CEC (Cation Exchange Capacity).The results prove that alkylammonium ions have taken the place of Na+ ions in Na+ - Montmorillonite (Na-MMT) and that the inter-laminar distance has been enlarged.
The possibility of using Na-MMT and organic-montmorillonite (O-MMT) in the treatment of wastewater from tanneries by utilizing their adsorption properties has been studied. The result shows that Na-MMT and O-MMT can absorb fatliquors to a certain extent.
A series of tanning experiments have been carried out to compare the tanning properties of Na-MMT, O-MMT and O-MMT/Cr3+. The results suggest that Na-MMT and O-MMT have some tanning capability, and that the composite O-MMT/Cr3+ with a very low content of Cr3+ can produce leather of light colour with a shrinkage temperature above 90oC. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURE :
- Preparation of organic-MMT
- Organic modification of MMT
- Sorption of grease from waste water by Na-MMT and O-MMT
- TANNING WITH NA-MMT AND O-MMT :
- General procedure for tanning
- TANNING WITH O-MMT/CR3+ COMPOSITE :
- Preparation of O-MMT/Cr3+ composite
- RESULTS AND DISCUSSIONS :
- Analysis of CEC, FT-IR and XRD of O-MMT
- Results of sorption of grease in waste water by Na-MMT and O-MMT
- Results of Tanning with Na-MMT and O-MMT
- Table 1 : CEC results for O-MMT
- Table 2 : Results of sorption of grease in waste water by Na-MMT and O-MMT
- Table 3 : Shrinkage temperatures of different tannages
- Table 4 : Thickness increment ratio for different tannages
- Table 5 : Shrinkage temperature of different tannages |
| En ligne : |
https://drive.google.com/file/d/1pTRjBEUgi5rzRX5SyWaG1WAIhJvVgRML/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39767 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 87, N° 4 (07-08/2003) . - p. 131-134
Aller sur edunet
Accueil
The preparation and application of a montmorillonite-based nanocomposite in leather making in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 4 (07-08/2003)
