Synthesis of sulfonated Sesamum indicum L. seed oil and its application as a fatliquor in leather processing / Adachukwu N. Nkwor in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)  

[article]  inJOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 3 (Année 2021) . - 13 p. Titre : Synthesis of sulfonated Sesamum indicum L. seed oil and its application as a fatliquor in leather processing Type de document : texte imprimé Auteurs : Adachukwu N. Nkwor, Auteur ; Pius O. Ukoha, Auteur ; Ikhazuagbe H. Ifijen, Auteur Année de publication : 2021 Article en page(s) : 13 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Caractérisation Chimie analytique Composés organiques -- Synthèse Cuirs et peaux -- Propriétés mécaniques Emulsions Extraction (chimie) Huile de sésame Produits de nourriture du cuir Sulfonation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Fatliquor is an oil-in-water emulsion that improves the physical properties of leather such as tensile strength, flexibility, and softness by lubricating the leather fibres. Sulfonated Sesamum indicum oil was synthesized, characterized, and examined for consideration as a substitute for imported fatliquor in Nigeria. The sulfonation of the oil was confirmed by the significant observations made in the FTIR, 1H NMR, 13C NMR, and 13C NMR DEPT analysis results. A remarkable difference was observed in the physicochemical properties results of both unsulfonated and sulfonated oils. The sulfonated sesame fatliquor was applied onto goatskin and compared with a commercial sulfated fatliquor in the processing of shoe upper leather using standard methods. The average results for tensile strength, double edge tear, elongation, and softness results for the commercial and synthesized fatliquors are as follows: 14.27 N/mm2; 13.77 N/mm2, 50.61 N; 60.11 N, 38.06%; 54.28%, 25.2; 25.0. A comparable level of lubrication of the leather treated with the sulfonated Sesamum indicum oil and that treated with the commercial leather fatliquor was revealed by the Sudan IV stain test as well as scanning electron microscopy analysis results. Experimental analyses, therefore, show that the as-synthesized sulfonated Sesamum indicum oil could be considered as a substitute for imported fatliquor in the leather industry. Note de contenu : - MATERIALS AND METHODS : Materials - Sample seed preparation - Extraction of Sesamum indicum oil - Sulfonation reaction procedure - Characterizations of S. indicum oil - Leather shoe upper manufacturing process - Strength/mechanical/physical properties of the shoe upper leathers - RESULTS AND DISCUSSION : Fatty acid composition - Sulfonation reaction process - Physiochemical properties of the oil - Structural analysis - NMR spectral characterisation - Stability of the 10% Fatliquor emulsions - Mechanical properties results - Table 1 : Fatliquoring process for shoe upper leather manufacture - Table 2 : Fatty acid profile of s. indicum oil - Table 3 : Physicochemical properties of unsulfonated and sulfonated s. indicum oil - Table 4 : Evaluation of the ft-ir spectra - Table 5 : 1h nmr evaluation of unsulfonated and sulfonated oils - Table 6 : Stability of 10% sulfonated s. indicum fatliquor towards pickle liquor, tan liquor and hard water - Table 7 : Tensile strength, elongation at break and double edge tear results - Table 8 : Strength of grain surface of leather test pieces DOI : https://doi.org/10.1186/s42825-021-00053-4 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-021-00053-4.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37542 [article]

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