The preparation and application of a montmorillonite-based nanocomposite in leather making / Jianzhong Ma in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 4 (07-08/2003)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 87, N° 4 (07-08/2003) . - p. 131-134 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 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

---

1 (1 - 1 / 1)