| Titre : |
Synthesis, characterization and application of sulphite castor maleic adduct as an effective leather fatliquor |
| Type de document : |
texte imprimé |
| Auteurs : |
Muhammad Imran-Ul Haq, Auteur ; Ayoub Rasheed, Auteur ; Ahmad Adnan, Auteur ; Fahim Ashraf Qureshi, Auteur ; Rashid Saleem, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 263-270 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Anhydride maléique
Composés organiques -- Synthèse
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de chèvres
Douceur (toucher)
Huile de ricin et constituants
Huiles et graisses
Métabisulfite de sodiumLe métabisulfite de sodium ou pyrosulfite de sodium est un désinfectant, antioxydant et conservateur alimentaire jaunâtre.
Photostabilité
Produits de nourriture du cuir
Solubilité
Viscosité
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Fatliquors are involved in leather making process to separate fibres of leather from each other and impart soft hand feeling. Fatliquors are chemically modifications of vegetable and animal oils. Castor oil is suitable as a basic raw material for the preparation of fatliquor due to hydroxyl functionality on ricinoleic acid. In this paper, castor ail based synthetic fatliquors were synthesised by two step processes. In a first step castor oil is condensed with maleic anhydride at varying mole ratio from 1 to 3. In the second step castor maleic adduct was sulphited with sodium metabisulphite at varying mole ratios from zero to 1.5. Solubility behaviour with viscosity changes were observed at différent mole ratios of reactants. Structural changes in synthetic fatliquors were studied by FTIR spectroscopy.
Fatliquoring properties at the stabilised fatliquors were comparatively evaluated on goat crust leather. Comparative analysis at leather softness, lear and tensile strengths, elongation at break, light fastness and scanning electron microscopy (SEM) of the fatliquored feathers were studied and comparatively better results were found in leather using the synthetic fatliquor which was synthesised at optimal conditions of castor ail to maleic anhydride mole ratio of 1:1.5 and further sulphitation of the castor maleic adduct with sodium metabisulphite at a mole ratio of 1. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Chemicals - Apparatus - Preparation of sulphited castor maleic condensate based synthetic fatliquor
- RESULTS AND DISCUSSIONS : Schematic approach for synthetic fatliquor - Solubility and viscosity behavior - Fatliquor application - Organoleptic properties - Scanning electron microscopy - Structure elucidation |
| En ligne : |
https://drive.google.com/file/d/1Gdqv54OnVR3LcJIsVxL245nq0s-ZLlrc/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27092 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 100, N° 5 (09-10/2016) . - p. 263-270
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