[article]
| Titre : |
Synthesis of a waterborne melamine resin and its retanning behaviors investigation |
| Type de document : |
texte imprimé |
| Auteurs : |
Ning Guo-Qiang, Auteur ; Zhou Ji-Bo, Auteur ; Liao Xue-Pin, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 288-295 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Absorption
Analyse spectrale
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés physiques
MélamineLa mélamine, de nom chimique 1,3,5-triazine-2,4,6-triamine, est parfois dénommée cyanuramide ou cyanurotriamine. Sa formule brute est C3H6N6.
Les "résines mélamine-formaldéhyde" ou "mélamine-formol" (sigle MF) sont appelées "mélamine" dans le langage courant. Elles font partie de la famille des aminoplastes qui regroupe des résines thermodurcissables aminées, issues d'un comonomère tel l'urée ou la mélamine, parfois le thiocarbamide, le cyanamide hydrogène ou le dicyandiamide ; le second comonomère étant le formaldéhyde.
Polymères -- Synthèse
Polymères en émulsion
Potentiel zeta
Résonance magnétique nucléaire
Retannage
Stabilité au stockage
Taille des particules
Tannage synthétique
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)
Wet-white (tannage)
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Recently, the application of waterborne melamine resin (WMR) is greatly increasing in the leather industry because of its convenient operation, but it often suffers from poor storage stability. Here, two waterborne melamine resin retanning agents (WMRs) with high storage stability were prepared using melamine, glutaraldehyde and collagen hydrolysates (CHs) as raw materials at different mole ratios. FTIR, 13C-NMR and XPS were used to characterize the chemical structure of synthesized resins, and their retanning behaviors for wet blue and wet white leather were fully investigated. The particle sizes of WMR1 and WMR2 were 28.73 nm and 8.78 nm, and their zeta potentials were 4.0 and 4.5, respectively. The introduction of CHs provided not only good water solubility but also amphoteric properties to synthesized resins, thereby resulting in high absorption of retanning and fatliquoring agents. Moreover, the retanning application investigation of WMRs manifested good storage stability and excellent overall performance, which are comparable with commercial retanning agents. This work showed that glutaraldehyde and CH could be used as starting materials in the synthesis of environmentally friendly WMR. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Preparation of WMRs - Characterization of WMRs UV absorption spectral analysis - Nuclear magnetic resonance (NMR) analysis - Fourier Transform Infrared (FTIR) spectroscopy analysis - X-ray photoelectron spectroscopy (XPS) analysis - Storage stability - Particle size and zeta potential determination - Retanning performances - Absorption - Physical and mechanical characteristics of leather
- RESULTS AND DISCUSSION : C NMR spectroscopy analysis - UV absorption spectra - FTIR spectroscopy analysis of MCH - XPS analysis - Storage stability - Particle size and zeta potential - Retanning performances of WMRs absorption - Physical and mechanical characteristics of leather
- Table 1 : Retanning processes of wet blue leather
- Table 2 : Retanning processes of wet white leather |
| DOI : |
https://doi.org/10.34314/jalca.v117i7.5965 |
| En ligne : |
https://drive.google.com/file/d/1lC8V5ZDreEymWV1WtLduWpi9cz2rJl02/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37821 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 7 (07/2022) . - p. 288-295
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Synthesis of a waterborne melamine resin and its retanning behaviors investigation in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 7 (07/2022)
