| Titre : |
Properties of epoxy modified starch tanning agent combined with aluminum salt |
| Type de document : |
texte imprimé |
| Auteurs : |
Hao Dongyan, Auteur ; Su Rongrong, Auteur ; Wei Chao, Auteur ; Xu Liqiang, Auteur ; Wang Xuechuan, Auteur |
| Année de publication : |
2024 |
| Article en page(s) : |
p. 28-35 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Agents de tannage
Amidon modifié
Analyse sensorielle
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuir -- Propriétés tinctoriales
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés physiques
Cuirs et peaux de moutons
Epoxydes
Résistance à la déchirure
Résistance à la traction
Résistance au jaunissement
Sels d'aluminium
Stabilité chimique
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
In order to investigate a new clean and chromium-free tanning method, an epoxy-modified starch (SCT) tanning agent was prepared from natural corn starch degradation products and we have examined its combined tanning effect with aluminum salts. The results showed that when the offer of SCT tanning agent was 8% of the mass of pickled sheep, and the offer of aluminum salt was 6%, at a tanning pH of 4.0, the shrinkage temperature (Ts) of crust leather could reach 79.8°C. In this situation, the SCT tanning agent and aluminum salt tanning agent cross-linked with the collagen.
After the combination of SCT tanning agent and aluminum salt, the tensile strength of the leather reached 26.27MPa, the tear strength was 37.52N/mm, and the elongation at break was 70.07%, which was obviously better than that of the leather tanned with SCT alone. Moreover, the leathers tanned with SCT and aluminum salts showed good elution resistance to different chemical media, avoiding the fading defects caused when using aluminum tanning alone. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials - Methods - Characterisation and property testing
- RESULTS AND DISCUSSION : Optimisation of the amount of SCT tanning agent - - Optimisation of the amount of aluminum sulfate - Chemical stability of crust leather - Physical and sensory properties of crust leather - Whiteness and yellowing resistance of crust leather - Analysis of dyeing properties of leather - Dispersion of collagen fibres in the cross section of crust leather
- Table 1 : Application of SCT as pre-tanning agent
- Table 2 : Tanning process of aluminum sulfate based on SCT pre-tanning |
| En ligne : |
https://drive.google.com/file/d/127aVeLXRvrnkb5Wkoe8H68dwfNwdUfy4/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40930 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 108, N° 1 (01-02/2024) . - p. 28-35
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Properties of epoxy modified starch tanning agent combined with aluminum salt in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 108, N° 1 (01-02/2024)
