| Titre : |
Deciphering the role of individual retanning agents on physical properties of leathers |
| Type de document : |
texte imprimé |
| Auteurs : |
Murali Sathish, Auteur ; Bhuvana Subramanian, Auteur ; Jonnalagadda Raghava Rao, Auteur ; Nishad Fathima Nishter, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 94-102 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Agents de tannage
Biopolymères
Copolymère mélamine-formaldéhyde
Cuirs et peaux -- Propriétés physiques
Phénoplastes
Polyacryliques
Retannage
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
In post-tanning different types of retanning agents are used in combination to improve the functional properties of leather and therefore understanding the individual effect of each retanning agents on final properties is difficult. This work mainly focuses toward quantifying the individual effect of different weight percentages (4, 8 and 16%) of phenol-formaldehyde resin (PFR), melamine-formaldehyde resin (MFR), acrylic resin (AR) and biopolymers (BP) on physical properties of leather. It was found that the strength characteristics are greatly affected when the retanning agents offer increased above 8% where the effect of phenol-formaldehyde resin is higher than other re-tanning agents. Melamine-formaldehyde resin and biopolymer is predominantly affecting the belly region. It has also been observed that the phenol-formaldehyde resin improves the fullness whereas grain tightness and flatness are improved with increasing the percentages of melamine-formaldehyde resin offer. Biopolymer improves the grain smoothness and the ability of improving the roundness of leather is similar for all kind of retanning agents. A meaningful conclusion could not be drawn in the porosity results obtained due to the heterogeneous nature of leather matrix. Thus, a conventional triplicate method of measurement as done in this study would not suffice to provide a conclusive interpretation of results obtained using capillary flow porometry technique. |
| Note de contenu : |
- EXPERIMENTAL METHODOLOGY : Analysis of physical strength characteristics - Analysis of porosity
- RESULTS AND DISCUSSIONS : effect of phenol-formaldehyde resin (PFR) on physical strength characteristics - Effect of melamine-formaldehyde resin (MFR) on physical strength characteristics - Effect of acrylic resin (AR) on physical strength characteristics - Effect of protein based biopolymer (BP) on physical strength characteristics - Effect of re-tanning agents on porosity - Effect of re-tanning agents on organoleptic properties |
| En ligne : |
https://drive.google.com/file/d/1c7oRcD0zU0flHM8vo0i4mnnKr3Fp2TDF/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31930 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIV, N° 3 (03/2019) . - p. 94-102
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