| Titre : |
Retanning performance of carboxymethyl starch and its effects on dyeing |
| Type de document : |
texte imprimé |
| Auteurs : |
Cigdem Kilicarislan Ozkan, Auteur ; Hasan Ozgunay, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 71-81 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Amidon modifié
Amidons -- Oxydation
Caractérisation
Colorants acides
Complexes métalliques
Cuirs et peaux -- Teinture
Cuirs et peaux de chèvres
Résistance à l'abrasion
Retannage
Solubilité
Stabilité hydrothermale
vision des couleurs
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
The tanning characteristics of starch samples modified by different methods were investigated in our previous studies. In this study, utilization of modified starch in leather making as a retanning agent and its effect on dyeing process have been investigated. For this purpose, the molecular size of native corn starch was reduced by H2O2 oxidation and then carboxymethylated. A series of analyses (water solubility, degree of substitution, Fourier Transform Infrared Spectroscopy, Proton and Carbon Nuclear Magnetic Resonance Spectroscopy) were carried out for characterization. Then, carboxymethyl starches were used in retanning processes to be 3, 5 and 10% based on leather weight and the shrinkage temperatures and filling coefficients of the leathers were determined. Acid and metal complex dyestuffs were used in dyeing processes and the effect of carboxymethyl starch on dyeing was also investigated by examining dye consumption, dry and wet rubbing fastness and color of the leathers. From the results it was concluded that carboxymethyl starch showed a noticeable solo performance in terms of filling property and shrinking temperature without any considerable adverse effect on dyeing. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Methods : Hydrogen peroxide (H2O2) oxydation of native corn starch - Determination of product yields - Determination of carboxyl and carbonyl contents of H2O2 oxidized starch - Carboxymethylation of H2O2 oxidized starch - Determination of degree of substitutions - Determination of water solubility of starches - Structure characterizations - The use of carboxymethyl starch in retanning process - Post-retanning tests
- RESULTS AND DISCUSSION : Moisture contents of starches - Product yields, DS and water solubilities of starches - Structure characterizations - Retanning and dyeing experiments - Consumption of dyestuff - Wet and dry rubbing fastness of dyed leather samples - Color differences
- Table 1 : Retanning and dyeing recipe
- Table 2 : The results of hydrothermal stability and filling coefficient gained to the wet-blue goat leathers
- Table 3 : The amounts of dyestuffs remaining in dyeing baths (g/L)
- Table 4 : Wet and dry rubbing fastness results of dyed leather samples
- Table 5 : Color measurement values of leathers retanned with CMS at different ratios and dyed afterwards |
| DOI : |
https://doi.org/10.34314/jalca.v117i2.4731 |
| En ligne : |
https://drive.google.com/file/d/1JKem5CFyvqZmgJgxqGmXohCUPMBmE2fW/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37168 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 2 (02/2022) . - p. 71-81
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Retanning performance of carboxymethyl starch and its effects on dyeing in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 2 (02/2022)
