| Titre : |
Impact of microwave irradiation on vegetable tanning |
| Type de document : |
texte imprimé |
| Auteurs : |
Jiacheng Wu, Auteur ; Zhiwen Fan, Auteur ; Jinwei Zhang, Auteur ; Yao Wang, Auteur ; Wuyong Chen, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 7-11 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Analyse thermique
Chromatographie en phase liquide à hautes performances
Chromatographie sur gel
Cuirs et peaux
Micro-ondes
Pénétration (physique)
Phénols
Stabilité thermique
Tannage végétal
Tannage végétal -- Analyse
Température de retrait
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
As a novel, mild, environmentally friendly and efficient thermal technology, microwave is freely used in many fields. Hence, an attempt has been made to apply the microwave in vegetable tanning to accelerate tanning reaction and improve the performance of the leather. In this work, the bonding properties of tannin extracts under microwave irradiation heating (MIH) ware investigated cornpared with water bath heating (WBH). Thermal performance of the leather treated under MIH was characterized by the shrinkage temperature and differential scanning calorimeter. The composition and properties of tanning liquors were analyzed by ultraviolet visible absorption spectroscopy, high performance liquid chromatography and gel permeation chrornatography. The results showed that the thermal stability of leather was improved and the shrinkage temperature of the leather increased about 1°C under MIH. Compared with a conventional tanning, the çomposition and properties of the liquids changed under MIH, for example, the content of rnacromoIecules and total phenolics content reduced. Furthermore, the number-average molecular weight of tanning liquid also decreased. The results indicated that MIH could promote the penetration of tannin extracts and combination between tannins and collagen. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Tanning processes - Determination of total phenolics content (TPC) - Analysis of remaining tan liquor (RTL) - Analysis of thermal properties
- RESULTS AND DISCUSSION : Tanning process - Thermal properties - Composition of RTL
- FIGURES : 1. The penetration depth of tannins - 2. DSC curves of the leather - HPLC of RTL - 4. GPC of RTL
- TABLES : 1. UV absorbance of TL - 2. Ts of the leather |
| En ligne : |
https://drive.google.com/file/d/1gsvLa8G3sgkFgWqEA67v8dqHSjuJbYSM/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30008 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 1 (01-02/2018) . - p. 7-11
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Impact of microwave irradiation on vegetable tanning in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 1 (01-02/2018)
