Synthesis of multi-site polyether amine triazine derivative for sustainable leather manufacturing / Xinju Jia in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVII, N° 4 (04/2022)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVII, N° 4 (04/2022) . - p. 141-152 Titre : Synthesis of multi-site polyether amine triazine derivative for sustainable leather manufacturing Type de document : texte imprimé Auteurs : Xinju Jia, Auteur ; Ran Tan, Auteur ; Biyu Peng, Auteur Année de publication : 2022 Article en page(s) : p. 141-152 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse thermique Blancheur Cuirs et peaux -- Propriétés mécaniques Cuirs et peaux -- Propriétés physiques Environnement -- Etudes d'impact Epaisseur -- Mesure Morphologie (matériaux) Polyéther amine triazine Polymères -- Synthèse Potentiel zeta Tannage synthétique Température de retrait Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In this work, a multi-site polyether amine triazine derivative (ET) was prepared via a one-step process and its structure was confirmed using FT-IR and 1H NMR analyses. Then, the ET was applied to the tanning process and the ET tanning approach optimized and evaluated. The result indicated that after tanning with 8% ET at pH 6 for 6 h, the shrinkage temperature of leather was 83.9°C and the thickness change rate was 97.5%. The XRD, DSC, TG, SEM and Zeta potential analyses demonstrated that ET could couple with the amino groups of the collagen side chains and breaking partial hydrogen bonds between fibers, brought significant improvement to the softness of leather without obvious damage to the high-level structure of collagen. Residual Cl- concentration in the wastewater decreased 42.1% in the tanning process compared to the conventional chrome tanning method. The emissions of COD and TDS in the tanning process reduced by 40.5% and 27.2%, respectively. It is conceivable that the ET tanning approach provides an improved approach to promote leather industry to develop sustainably. Note de contenu : - EXPERIMENTAL : Materials and equipment - Preparation of polyether amine triazine derivatives (ET) - Fourier Transform Infrared Spectroscopy (FT-IR) - Nuclear magnetic resonance spectroscopy (1H NMR) - Leather tanning processing - Determination of the shrinkage temperature - Determination of the exhaustion rate of tanning agent - Determination of the percent thickness increase - Thermal analysis - Zeta potential analyses - Morphological analyses - Whiteness analysis - X-ray diffraction (XRD) measurement - Determination of physical and mechanical properties - Environmental impact assessment - RESULTS AND DISCUSSIONS : Characterization of ET - Optimization of the ET tanning conditions - Optimization of the ET tanning temperature - Optimization of the ET dosage - Zeta potential analysis - XRD analysis - Physical performance leather - Whiteness analysis - Morphology analysis - Environmenta impact assessments - Table 1 : ET tanning process - Table 2 : CTDT tanning process - Table 3 : Tanning effect of different ET dosage - Table 4 : Weight loss in different thermogravimetric stage - Table 5 : Physical performances of leather tanned with different method - Table 6 : Whiteness of wet-white tanned by different methods DOI : https://doi.org/10.34314/jalca.v117i4.4897 En ligne : https://drive.google.com/file/d/1aScYsv5HLo94PmHjL2bri8iHG1jRufx0/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37561 [article]

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