| Titre : |
Characterization and thermal properties of polygenipin-crosslinked hide powders |
| Type de document : |
texte imprimé |
| Auteurs : |
Jie Liu, Auteur ; Eleanor M. Brown, Auteur ; Cheng-Kung Liu, Auteur ; Keyong Tang, Auteur |
| Année de publication : |
2018 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Analyse thermique
Caractérisation
Couleur
Génipine
Poudre de peaux
Réticulation (polymérisation)
Stabilité thermique
Thermogravimétrie
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Genipin is a naturally occurring iridoid compound, it is widely used as an ideal biological protein crosslinking agent due to its low toxicity compared to glutaraldehyde and formaldehyde. Under alkaline condition, genipin could undergo ring-opening polymerization via nucleophilic attack of hydroxyl ions followed by an aldol condensation. Because of the fact that polygenipin could create long-range intermolecular crosslinking between protein chains, preliminary investigations have been carried out to study effect of polygenipin crosslinking on color and thermal stability of hide powder by using colorimetry, differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The results show that the peak denaturation temperature (Tp) for hide powders obtained from DSC increased to a maximum and then decreased with increasing of the molecular weight of polygenipin. Degree of crosslinking was evaluated, and the results suggest that thermal stability of hide powder is influenced not only by degree of crosslinking, but also by the type of crosslinking. Thermogravimetric analysis also confirms that long-range intermolecular crosslink bridges formed between collagen molecules results in more thermally stable hide powders. This study suggests that polygenipin can be potentially useful in producing eco-friendly leather. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Preparation of polygenipin - Preparation of the polygenipin crosslinked hide powders - Colors parameters - Degree of crosslinking (DC) - Differential scanning calorimetry (DSC) - Thermogravimetric analysis (TGA)
- RESULTS AND DISCUSSION : Characterization of polygenipin - Color parameters of polygenipin crosslinked hide powders - Degree of crosslinking - Differential scanning calorimetry - Thermogravimetric analysis |
| En ligne : |
https://drive.google.com/file/d/1Llp-sHkQH85153d8dB0r7CFGqTdROUTK/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30338 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 4 (04/2018)
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Characterization and thermal properties of polygenipin-crosslinked hide powders in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 4 (04/2018)
