| Titre : |
Synthesis and application of urea paraformaldehyde polymer as a tanning agent |
| Type de document : |
texte imprimé |
| Auteurs : |
N. H. El-Sayed, Auteur ; El-Shahat H. A. Nashy, Auteur |
| Année de publication : |
2002 |
| Article en page(s) : |
p. 240-248 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Agents de tannage
Analyse sensorielle
Copolymère urée formaldéhyde
Copolymères -- Synthèse
Cuirs et peaux -- Propriétés mécaniques
Essais de résilience
Essais dynamiques
Evaluation visuelle
Résistance à la putréfaction
Tannage synthétique
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
A urea paraformaldehyde polymer has been synthesized under optimum conditions, for use as a tanning agent. The characteristics and effects of this polymer as a tanning agent were investigated. The tensile strength, elongation at break, tear strength, scanning electron microscopy (SEM), shrinkage temperature, shrinkage area, putrefaction resistance and thermal gravimetric analysis (TGA) parameters were studied. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Materials - Methods
- RESULTS AND DISCUSSION : Polymer synthesis - Scheme 1 : Polymer formula - Scheme 2 : Sulphited polymeric structure - 2- Mechanical Properties - 3- Scanning Electron Microscopy (SEM) - 4- Shrinkage Temperature (ST) - 5- Putrefaction resistance - 6- Thermo Gravimetric Analysis (TGA) of the treated leather - 7- Handle and appearance (Table VI) - 8- Practical Application - Scheme 3 : Application process
- Table 1 : Effect of polymer percentages on mechanical properties
- Table 2 : Dependence of shrinkage temperature and area on percentage of polymer used
- Table 3 : Total soluble proteins of the treated leather after putrefaction
- Table 4 : Free amino acids of the treated leather after putrefaction
- Table 5 : TGA for raw and tanned leather by chrome and the prepared
polymer
- Table 6 : Visual evaluation of polymer tanned leather |
| En ligne : |
https://drive.google.com/file/d/1ze4J_adSjd0DsMbNmgvAeQVkFmancavl/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39844 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 86, N° 6 (11-12/2002) . - p. 240-248
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Synthesis and application of urea paraformaldehyde polymer as a tanning agent in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 6 (11-12/2002)
