Application of titanium metal oxide nanoparticles for leather coating / Sivaraj Sudhahar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 3 (03/2013)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVIII, N° 3 (03/2013) . - p. 108-114 Titre : Application of titanium metal oxide nanoparticles for leather coating Type de document : texte imprimé Auteurs : Sivaraj Sudhahar, Auteur ; Chandrasekaran Sivaraj, Auteur ; Sanjeev Gupta, Auteur Année de publication : 2013 Article en page(s) : p. 108-114 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Adhésion Cuirs et peaux -- Finition Cuirs et peaux -- Propriétés mécaniques Dioxyde de titane Flexion (mécanique) Nanoparticules -- Synthèse Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Leather finishing is a very important operation in leather manufacture. Various chemicals are used in leather finishing. The introduction of nanoparticles in leather finishing has revolutionized the leather industry. They are used to produce various types of leathers and to meet the end user requirements. The aim of the work was to coalesce the fields of leather technology and nanotechnology for obtaining superior quality of leather with improved performance. Synthesis of titanium metal oxide nanoparticles was done by sol-gel process and used in leather finishing mixture as coating ingredients. The physical and chemical properties of the synthesized metal oxide nanoparticles were characterized by TEM, FE-SEM, EDAX, FT-IR and XRD. The surface morphology of the nanoparticle coated leather was evaluated by AFM. The finished leather was assessed for its film adhesion to evaluate the strength of the bonding between the leather surfaces and finish coating. The conventional finish system experience finish adhesion issue in due course of time. The titanium metal oxide nanoparticles coated leather exhibited increased adhesion property. TiO2 nanoparticles increased the intermolecular linkages between the leather finish coating and the leather surface. Note de contenu : EXPERIMENTAL : - Materials - Synthesis of titanium metal oxide nanoparticles - Preparation of conventional base coat finish formulation, incorporating TiO2 nanoparticles, for shoe upper leather - Topcoat formulation RESULTS AND DISCUSSION : - Structural and morphological characterization of TiO2 nanoparticles : Wide angle-X-ray diffraction spectroscopy (XRD) analysis - Field emission scanning electron microscope imaging and energy dispersive analysis - EDAX peaks of nano TiO2 powders - Elemental composition analysis - Atomic force microscope image analysis of TiO2 nanoparticles coated leather sample - Determination of applied physical properties for TiO2 nanoparticles coated leather : Flexing endurance - Measurement of finish adhesion - Performance test result for the TiO2 nanoparticles coated leather - Subjective evaluation result for TiO2 nanoparticles coated leather En ligne : https://drive.google.com/file/d/1xDzBGkFHk6szR7eYW0Nq0hRMmibNUFpW/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17733 [article]

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Preparation, characterization and application of silica metal oxide nanoparticles for leather coating / Sivaraj Sudhahar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 7 (07/2012)  

[article]  inJOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVII, N° 7 (07/2012) . - p. 249-255 Titre : Preparation, characterization and application of silica metal oxide nanoparticles for leather coating Type de document : texte imprimé Auteurs : Sivaraj Sudhahar, Auteur ; Chandrasekaran Sivaraj, Auteur ; Sanjeev Gupta, Auteur Année de publication : 2012 Article en page(s) : p. 249-255 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Cuirs et peaux -- Finition Dioxyde de silicium Nanoparticules -- Synthèse Silice La silice est la forme naturelle du dioxyde de silicium (SiO2) qui entre dans la composition de nombreux minéraux. La silice existe à l'état libre sous différentes formes cristallines ou amorphes et à l'état combiné dans les silicates, les groupes SiO2 étant alors liés à d'autres atomes (Al : Aluminium, Fe : Fer, Mg : Magnésium, Ca : Calcium, Na : Sodium, K : Potassium...). Les silicates sont les constituants principaux du manteau et de l'écorce terrestre. La silice libre est également très abondante dans la nature, sous forme de quartz, de calcédoine et de terre de diatomée. La silice représente 60,6 % de la masse de la croûte terrestre continentale. Sol-gel, Procédé Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Synthesis of silica sol-gel nanoparticles was carried out by the Stober’s process and the resulting products were used in leather finishing mixtures as a coating ingredient. The physical and chemical properties of the synthesized sol-gel nanoparticles were characterized by TEM, FE-SEM, EDAX, FT-IR, TGA and XRD. The surface morphology of the nanoparticle coated leathers were evaluated by AFM. The silica sol-gel nanoparticles-coated leather exhibited improved water spotting resistance, water vapor permeability, and increased adhesion values. Therefore, a conventional system of leather finishing has been upgraded by using silica sol-gel nanoparticles, especially in the base coat application. Note de contenu : - INTRODUCTION : Materials - Synthesis of silica sol-gel nanoparticles - Preparation of conventional base coat finish formulation, incorporating silica sol-gel nanoparticles, for shoe upper leather - Top coat formulation for silica sol-gel nanoparticles applied leather - RESULTS AND DISCUSSION : Structural and morphological characterization of silica sol-gel nanoparticles. Field emission scanning electron microscope imaging and energy dispersive analysis - Edax peaks of nano SiO2, powder - Elemental composition analysis - Determination of applied physical properties for silica sol-gel nanoparticles coated leather - Wet and dry rub analysis - Measurement of lastometer - Water spotting resistance - Measurement of water vapour permeability - Measurement of finish adhesion - Subjective evaluation result for silica sol-gel nanoparticles coated leather En ligne : https://drive.google.com/file/d/1yubC3ga22nLwuxyQqMDtKU-C-dvukK0h/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=15645 [article]

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