Study of the biodegradability of leather tanned with sodium aluminosilicate / Salvador Esquerra-Resa in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 6 (06/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 6 (06/2022) . - p. 251-261 Titre : Study of the biodegradability of leather tanned with sodium aluminosilicate Type de document : texte imprimé Auteurs : Salvador Esquerra-Resa, Auteur ; Salvador Esquerra-Dot, Auteur ; Alejandro Garcia, Auteur ; Angels Moreno, Auteur ; Teresa Mir, Auteur ; Anna Bacardit, Auteur Année de publication : 2022 Article en page(s) : p. 251-261 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Alumino-silicate de sodium Cuirs et peaux -- Biodégradation Cuirs et peaux de bovins Cuirs et peaux de moutons Essais (technologie) Formulation (Génie chimique) Maroquinerie Retannage Tannage minéral Tannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium Tannage végétal Tige de la chaussure Zéolites Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The leather industry transforms raw hides into leather by mechanical and chemical processes. The main chemical process is the tanning in which the fibers are stabilized and cannot putrefy. To this end, different chemicals can be used that are capable of forming crosslinkages between collagen molecules. In this sense, the most used products are: chromium salts, aluminum, vegetable tannins, synthetics, aldehydes, resins and silicates. In this work, a new biodegradable tanning process based on zeolites was studied in two steps. In the first one, a tanning process for sheepskins and cow hides was developed. In the second one, three types of retanning process to obtain shoe upper, vegetable and leather goods were studied. This new system allows to obtain leather that can decompose naturally in a relative short period of time. Leather tanned with this system shows similar values to the biodegradability of pure collagen. Specifically, with the retanning system used for shoe upper allows to obtain a 74.4% relative biodegradability compared to pure collagen. Note de contenu : - MATERIALS AND METHODS : Zeolites tanning process - Study of three types of retanning for the new tanning system - RESULTS : Zeolites tanning process - Study of three types of retanning for the new tanning system - Table 1 : Sheep skin tanning formulation - Table 2 : Cow hide tanning formulation - Table 3 : vegetable retanning formulation - Table 4 : Leather goods retanning formulation - Table 5 : Shoe upper retanning formulation - Table 6 : Physical and chemical tests results for vegetable - Table 7 : Physical and chemical tests results for shoe upper - Table 8 : Physical and chemical tests results for leather goods - Table 9 : Carbon content - Table 10 : Percentage of theoretical aerobic biodegradability - Table 11 : Percentage relative biodegradability DOI : https://doi.org/10.34314/jalca.v117i6.4966 En ligne : https://drive.google.com/file/d/1p5bnqsaxUqqhwhynwdWcfrEwRqUl1ZDs/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37800 [article]

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