| Titre : |
Preparation of formaldehyde-free melamine resin using furfural as condensation agent and its retanning performances investigation |
| Type de document : |
texte imprimé |
| Auteurs : |
Zhou Ji-Bo, Auteur ; Li Pei-Lin, Auteur ; Jian-Fei Zhou, Auteur ; Liao Xue-Pin, Auteur ; Bi Shi, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 198-206 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Colorimétrie
Cuirs et peaux -- Analyse
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés physiques
Douceur (toucher)
Epaisseur -- Mesure
Formaldéhyde -- Suppression ou remplacement
Fourier, Spectroscopie infrarouge à transformée de
Furfural
Mélamine -- Synthèse
Potentiel zeta
Retannage
Spectroscopie de la résonance magnétique nucléaire
Taille des particules
Température de retrait
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Amino resins are one of the most important retanning agents used in the leather industry. However, the generally presence of formaldehyde greatly restricts the widespread application of amino resins. In this study, furfural, an organic compound derived from biomass material, was used to substitute for formaldehyde in the synthesis of melamine resin based on an alkaline-acid procedure. The as-synthesized formaldehyde-free melamine resin (MRf) showed excellent performances in leather processing. FTIR and 13C-NMR were used to characterize the chemical structure of MRf. The particle size as well as zeta potential were also determined. The retanning performances of MRf indicated that the overall performances of MRf are comparable to conventional formaldehyde contained melamine resin (MR) and commercial melamine resin (CMR). In particular, the thickness of the leather retanned by MRf was enhanced around 10.33%, which is significantly higher than that of controls MR (6.16%) and CMR (5.94%). Color measurements showed that MRf imparted leather with higher dark intensity. This present work demonstrated that furfural could be a potential candidate to replace formaldehyde in the production of formaldehyde-free melamine resin. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Preparation of MRf resin
- CHARACTERIZATION OF MRF : Fourier Transform Infrared (FTIR) spectroscopy analysis - Nuclear Magnetic Resonance ( NMR) analysis - Particle size and zeta potential determination
- RETANNING PERFORMANCES OF MRF : Physical and mechanical characteristic of leather - Color measurements - Analysis of free formaldehyde content in leather
- RESULTS AND DISCUSSION : Preparation of MRf - FTIR spectroscopy analysis of MRf resin - C NMR spectroscopy analysis - Particle size and zeta potential
- RETANNING PERFORMANCES OF MRF : Absorption, thickening and softness of leather - Physical and mechanical characteristics of leather - Shrinkage temperature of leather, chromium concentration in spent liquor and formaldehyde content in leather - Color measurements |
| En ligne : |
https://drive.google.com/file/d/12CWMptyjoA2fiMqA2-t3PL-Scy5xhxRO/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30689 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIII, N° 6 (06/2018) . - p. 198-206
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