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Cool glove leathers made using thermoresponsive syntans / A. Jaya Prakash in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIX, N° 12 (12/2014)
[article]
Titre : Cool glove leathers made using thermoresponsive syntans Type de document : texte imprimé Auteurs : A. Jaya Prakash, Auteur ; M. Ragul, Auteur ; Jonnalagadda Raghava Rao, Auteur ; N. N. Fathima, Auteur Année de publication : 2014 Article en page(s) : p. 411-417 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation
Copolymère mélamine-Formaldéhyde
Encapsulation
Gants
Matériaux thermosensibles
Syntans
Transition de phaseEn physique, une transition de phase est une transformation du système étudié provoquée par la variation d'un paramètre extérieur particulier (température, champ magnétique...).
Cette transition a lieu lorsque le paramètre atteint une valeur seuil (plancher ou plafond selon le sens de variation). La transformation est un changement des propriétés du système.Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Protection is the main function of gloves; also comfort of the wearer has to be kept in mind while making gloves without compromising on strength and flexibility. Body dissipates heat in the form of sweat; sweating through hands is likely to be more while using gloves in relatively hot weather conditions resulting in discomfort and slipperiness. In order to overcome these problems there is a need for development of materials, which can respond to temperature changes providing comfort and protection. In our current study, Phase Changing Material (PCM) was encapsulated in condensate polymers of melamine formaldehyde for preparation of thermoresponsive syntan. The syntan was characterised using different techniques such as Differential Scanning Calorimetry (DSC), Thermo Gravimetric Analysis (TGA) and Scanning Electron Microscopy (SEM). Glove leathers made using this syntan were termed “Cool glove leathers” as they showed thermoresponsive behaviour, which exhibited a temperature difference of 1.5±0.5°C to that of control leather samples with 0.5±0.4°C. The cool glove leathers were tested for various properties like strength, organoleptic and thermoresponsive function. Note de contenu : - EXPERIMENTAL SECTION : Reagents - Synthesis of PCM microencapsulated melamine-formaldehyde syntan - Characterization of thermoresponsive syntan and leather
- RESULTS AND DISCUSSION : Characterization of PCM based syntan - Characterization of cool glove leathers - Thermo responsive function analysis - Physical strength and organoleptic properties of leathersEn ligne : https://drive.google.com/file/d/1VJhUyzON_eUquxOnyVno4yYI5qHeNPUr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22498
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIX, N° 12 (12/2014) . - p. 411-417[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 16713 - Périodique Bibliothèque principale Documentaires Disponible Dyeing of chamois leather using water soluble sulphure dyes / A. Jaya Prakash in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 10 (10/2016)
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Titre : Dyeing of chamois leather using water soluble sulphure dyes Type de document : texte imprimé Auteurs : A. Jaya Prakash, Auteur ; Rathinam Aravindhan, Auteur ; N. Nishad Fathima, Auteur ; Jonnalagadda Raghava Rao, Auteur Année de publication : 2016 Article en page(s) : p. 383-389 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Colorants
Colorimétrie
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Teinture
Cuirs et peaux de Chamois
Humidité -- Absorption:Eau -- Absorption
pH
Résistance à l'abrasion
Solidité de la couleur
SoufreIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Chamois leathers find application in fuel filtration and cleaning. Recently, use of chamois leathers is explored in the development of sports garments, gloves and other personal wear. However, one of the consumer demand viz. different colors on the end product is not met by chamois leathers. Hence, dyeing is essential to make it more attractive for end user applications. In the present work an attempt has been made to develop colored chamois leather by employing water soluble sulphur dyes. The offer of sulphur dyes have been optimized based on dyeing characteristics, color fastness and color values. The results indicate that offer of 1 and 2% of the dyes show better colour value and fastness to rubbing. Hence, it could be inferred that coloring of chamois leathers not only improved the aesthetic appeal but also helped in adding value without altering inherent properties of chamois leather. Note de contenu : - EXPERIMENTAL SECTION : Materials - Methods : Dyeing of chamois leather - Color measurement of chamois leathers - Color fastness analysis - Water absorption - Organoleptic
- RESULTS AND DISCUSSION : Dyeing of leather matrix - Reaction mechanism and effect of pH - Stability of dye solution towards acid, alkali and hard water - Color measurement of chamois leather - Color fastness - Water absorption - Evaluation of organoleptic propertiesEn ligne : https://drive.google.com/file/d/1qxWDPiimzVoIWkafnFc4jR84urkRyfXC/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27032
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 10 (10/2016) . - p. 383-389[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 18365 - Périodique Bibliothèque principale Documentaires Disponible