| Titre : |
Water hardness as an important parameter of the fatliquoring process |
| Type de document : |
texte imprimé |
| Auteurs : |
Krzysztof Smiechowski, Auteur ; Malgorzata Kowalska, Auteur ; Jan Zarlok, Auteur ; M. Lipiec, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 296-302 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuirs et peaux -- Analyse
Douceur (toucher)
Eau dure
Emulsions
Emulsions -- Stabilité
Epaisseur -- Mesure
Lixiviation
Produits de nourriture du cuir
Taille des particules
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The paper presents studies on the influence of selected parameters of water used in fatliquoring. Water of varying hardness (quantifies of calcium, magnesium, iron compounds and of chlorides) was used in the process. Properties of fatliquoring emulsions containing waters of different hardness were determined. It was noted that emulsions were less stable in the presence of eiectrolytes. Generally, the average particle size of prepared fatliquoring emulsions increased if the water phase contained : calcium, magnesium, iron compounds and chlorides. The presented studies on the affects on tanned hides confirmed the desirability of using low hardness water without iron and chlorides. |
| Note de contenu : |
- Preparation of fatliquoring
- Stablity of fatliquoring emulsions
- Resistance of fatliquoring emulsions to electrolytes
- Determination of fatliquoring emulsion particle size
- Dispersion index
- Leather fatliquoring process
- Determination of fat content in bath after fatliquoring
- Determination of fat content in leather
- Determination of leather softness according to PH-EN ISO 17235
- Determination of leather sample thickness as per PN-EN ISO 2589
- TABLES : 1. Classification of water for tanning according to BASF - 2. Characteristic of water used to prepare fatliquoring emulsions - Methodology of wet-blue fatliquoring - 4. Stability of 10% emulsion and resistance to electrolytes (Nacl and chromium agent) - 5. Parameters of particle size distribution for fatliquoring emulsions at 20°C and 60°C - 6. Characteristics of the baths after fatliquoring - 7. Thickness and softness of leather samples tested - 8. Free fat content in leather
- FIGURES : 1. Particle size distribution of emulsions Em (A)? Et (B), Ebt(C) determined at 20°C - 2. Particle size distribution of emulsions Em (A)? Et (B), Ebt(C) determined at 60°C. The emulsions produced at the two different temperatures (20 and 60°C) with distilled water (free from magnesium, calcium and iron compounds) were observed to have lower average particle sizes. In summary, a greater temperature and increased presence of magnesium, calcium and iron cause the average particle size to increase - 4. Impact of temperature, hardness and presence of iron compounds on average particle size |
| En ligne : |
https://drive.google.com/file/d/1LJd8IEpiWFxeHGbbtdZ77uC1JTs28BK_/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29668 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 101, N° 6 (11-12/2017) . - p. 296-302
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Water hardness as an important parameter of the fatliquoring process in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 6 (11-12/2017)
