| Titre : |
Leather retanning performance of carboxylated collagen fibres containing adsorbed Cr(III) |
| Type de document : |
texte imprimé |
| Auteurs : |
Qiang Taotao, Auteur ; Song Yunying, Auteur ; Bu Qiaoqiao ; Wang Xuechuan ; Li Ji ; Li Lu |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 187-193 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Absorbants et adsorbants
Carboxylation
Collagène
Cuir -- Teneur en chrome trivalent
Cuirs et peaux d'esturgeon
Cuirs et peaux de moutons
Cuirs et peaux de Poissons
Extraction (chimie)
Glyoxylique, AcideL'acide glyoxylique ou acide oxoacétique est un acide organique. Avec l'acide acétique, l'acide glycolique et l'acide oxalique, l'acide glyoxylique est l'un des acides carboxyliques en C2. C'est un solide incolore naturellement présent et il est utile industriellement.
Hydrolysats de protéines
Hydrolyse enzymatique
Retannage
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Carboxylated collagen fibre (CCF) was prepared using glyoxylic acid modified collagen fibre which was extracted from fresh pigskin, the prepared CCF was used as an adsorbent to treat trivalent chromium ions (Cr(III)) in wastewater (Cr-CCF). Alkali-enzyme hydrolysis was used to extract collagen protein from the CCF after the adsorption of Cr(III) to obtain chromium-containing collagen hydrolyzate (Cr-CCH). Fourier transform infrared spectroscopy (FTIR) and gel permeation chromatography (GPC) were employed to analyse the structure and relative molecular mass distribution of the collagen in Cr-CCH. The Cr(III) content was determined by diphenylcarbazide spectrophotometry. The optimal hydrolysis conditions were optimised by single factor experiments with the collagen extraction rate as the index. Finally, sheep and sturgeon wet-blue was chosen to evaluate the retanning efficiency of Cru-CCH. The satisfactory sensory and mechanical properties of the finished leather demonstrated that Cr-CCH could become a good candidate as a retanning agent, which not only satisfied performance requirements for finished leather, but also achieved recycling of resources. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Material and apparatus - Preparation of CFF - Preparation of Cr-CCF - Alkali-enzyme hydrolysis of Cr-CCF - Characterization of Cr-CCH - Retanning performance of Cr-CCH
- RESULTS AND DISCUSSION : The single factor effect of Cr-CCH - The characterization of hydrolysos performance - The retanning performance of Cr-CCH |
| En ligne : |
https://drive.google.com/file/d/1-gpslAR_wnZbgfSQB-krSGQLXYwcPxJp/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30901 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 4 (07-08/2018) . - p. 187-193
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