| Titre : |
Dynamic mechanical thermal analysis (DMTA) of leather. Part 1 : Effect of tanning agent on the glass transition temperature of collagen |
| Type de document : |
texte imprimé |
| Auteurs : |
S. Jeyapalina, Auteur ; Geoffrey E. Attenburrow, Auteur ; Anthony D. Covington, Auteur |
| Année de publication : |
2007 |
| Article en page(s) : |
p. 236-242 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Agents de tannage
Analyse mécanique dynamique
Analyse thermique
Collagène
Tannage
Transition vitreuse
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
We report the dynamic mechanical behaviour of leather within the temperature range - 100 to 300°C, where three major viscoelastic transitions were identified, termed α, β and γ. The β transition peak represents the glass transition temperature of the amorphous region of collagen molecules. It also demonstrates that tanning agents act as plasticisers and depress the glass transition temperature to a lower temperature. Thus, the tanning process itself may be viewed as a plasticisation of the collagen molecule : the tanning molecules interpose themselves between the collagen chains, thus reducing the forces holding the chains together. Different tanning agents show differing degrees of plasticisation. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Sample preparation for DMTA studies - Dynamic Mechanical Thermal Analysis - Differential Scanning Calorimetry (DSC) - Collagen content determination
- RESULTS AND DISCUSSION :
- Table 1 : Transition temperatures of tanned and untanned skin, conditioned at 0%RH |
| En ligne : |
https://drive.google.com/file/d/1i9tpKuP7Ect5b6ffo4KztaEbkbTEk5nW/view?usp=share [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39005 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 6 (11-12/2007) . - p. 236-242
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Dynamic mechanical thermal analysis (DMTA) of leather. Part 1 : Effect of tanning agent on the glass transition temperature of collagen in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 6 (11-12/2007)
