Accueil
Catégories
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
Vegetable tanning material for tanning, retanning, and coloring of leather / Ali Musa / Saarbrücken [Germany] : Lambert Academic Publishing (2013)
Titre : Vegetable tanning material for tanning, retanning, and coloring of leather Type de document : texte imprimé Auteurs : Ali Musa, Auteur Editeur : Saarbrücken [Germany] : Lambert Academic Publishing Année de publication : 2013 Importance : XXIX-208 p. Présentation : ill. Format : 22 cm ISBN/ISSN/EAN : 978-3-659-41434-3 Prix : 70 E Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Teinture
Henné
Retannage
Tannage végétalIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In this book the phytochemical investigation of henna leaves have been carried out. Tannin, non-tannin, total soluble, total solid, insoluble, moisture, pH and color of dried powder of henna leaves were determined. The lawsone, the principal colouring matter of henna was identified. The antibacterial activity of aqueous extract of henna leaves against gram positive bacteria and gram negative bacteria were investigated. The investigation to produce upper leathers using a new ecobenign combination tanning process based on henna has been studied. Henna as alternative retanning agent for mimosa using wet blue has been studied. The henna extract has been used as an alternative natural material for the dyeing of leather. Note de contenu : 1. INTRODUCTION : Leather-A profile - Theory of tannage - Theories of combined tannages - Retanning and dyeing - Collagen-The leather making protein - Scope of work
2. CHARACTERIZATION OF HENNA
3. DEVELOPMENT OF COMBINATION TANNING SYSTEM USING HENNA
4. INVESTIGATION OF HENNA FOR DYEINGPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=22322 Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 16662 675.2 MUS Monographie Bibliothèque principale Documentaires Disponible Viscosity and retanning properties of isophthalic dihydrazide based amino resins under different reactant conditions / Rashid Saleem in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 97, N° 5 (09-10/2013)
[article]
Titre : Viscosity and retanning properties of isophthalic dihydrazide based amino resins under different reactant conditions Type de document : texte imprimé Auteurs : Rashid Saleem, Auteur ; Ahmad Adnan, Auteur ; Muhammad Riaz, Auteur ; Fahim Ashraf Qureshi, Auteur Année de publication : 2013 Article en page(s) : p. 211-219 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Allongement à la rupture
Chimie -- Essais et réactifs
Cuirs et peaux -- Propriétés mécaniques
Déchirure (mécanique)
Dihydrazide isophthalique
Formaldéhyde
Fourier, Spectroscopie infrarouge à transformée de
MélamineLa mélamine, de nom chimique 1,3,5-triazine-2,4,6-triamine, est parfois dénommée cyanuramide ou cyanurotriamine. Sa formule brute est C3H6N6.
Les "résines mélamine-formaldéhyde" ou "mélamine-formol" (sigle MF) sont appelées "mélamine" dans le langage courant. Elles font partie de la famille des aminoplastes qui regroupe des résines thermodurcissables aminées, issues d'un comonomère tel l'urée ou la mélamine, parfois le thiocarbamide, le cyanamide hydrogène ou le dicyandiamide ; le second comonomère étant le formaldéhyde.
Métabisulfite de sodiumLe métabisulfite de sodium ou pyrosulfite de sodium est un désinfectant, antioxydant et conservateur alimentaire jaunâtre.
Microscopie électronique à balayage
Retannage
Stabilité thermique
Sulfoniques, Acides
Thermogravimétrie
Traction (mécanique)
ViscositéIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Sulfonated amino resins like urea and melamine formaldehyde resins are widely used in retanning of leather. Both urea and melamine formaldehyde resins show free formaldehyde contents in the retanned leather greater than permissible limits Oppm). In this research sulfonated isophthalic dihydrazide formaldehyde condensates have been prepared through controlled reaction of isophthalic dihydrazide with formaldehyde and sodium metabisulfite under different reactant conditions to optimize the free formaldehyde content in retanned leather within permissible limits. The retanning behaviours of these resin have been investigated. Tear strength, tensile strength, elongation at break and morphology of grain and cross section of fibre through scanning electron microscopy of the retanned leather has been studied. TGA was performed to evaluate the thermal stability of the resin. Structural elucidation of the optimized resin was characterized by FTIR. Note de contenu : - MATERIALS AND METHODS : Chemicals - Apparatus - Preparation of sulfonated glutaric dihydrazide formaldehyde resin - Resin application as retanning agent
- RESULTS AND DISCUSSION : Methylolation - Sulfonation - Condensation of monomers - Viscosity behavior - Physico-chemical evaluation of the leather - Free formaldehyde analysis in leather - Organoleptic properties - Scanning electron microscopic analysis of processed leathers - Thermogravimetric analysis - Structural ellucidation by FTIREn ligne : https://drive.google.com/file/d/16q6HIFbK2M9up2m2okOFTPIT1GoqQbRN/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19570
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 97, N° 5 (09-10/2013) . - p. 211-219[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 15601 - Périodique Bibliothèque principale Documentaires Disponible Visualization and quantification of penetration/mass transfer of acrylic resin retanning agent in leather using fluorescent tracing technique / Yunhang Zeng in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 11 (11/2016)
[article]
Titre : Visualization and quantification of penetration/mass transfer of acrylic resin retanning agent in leather using fluorescent tracing technique Type de document : texte imprimé Auteurs : Yunhang Zeng, Auteur ; Ying Song, Auteur ; Jing Li, Auteur ; Wenhua Zhang, Auteur ; Bi Shi, Auteur Année de publication : 2016 Article en page(s) : p. 398-405 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acide polyacrylique
Cuirs et peaux -- Analyse
Retannage
Spectroscopie de fluorescence
Transfert de masseIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Acrylic resin is a widely used retanning agent in leather processing, and its retanning effectiveness is closely related to its penetration depth and filling parts in leather. But acrylic resin in leather cannot be visualized or quantified, and thus its application mainly depends on tanners’ experience. In this study, 5-aminofluorescein-labeled poly(acrylic acid) (AF-PAA), as a model of fluorescent acrylic resins, was synthesized using a phase-transfer reaction and then purified using Sephadex gel filtration. AF-PAA was applied to retanning process and could be well visualized and quantified in retanned leathers using fluorescence microscopy and Image J software. Looser collagen fibers, increasing amount of acrylic resin or retanning together with some anionic retanning agents could enhance penetration/mass transfer of acrylic resin in leather. The fluorescent tracing technique is useful to investigate the mass transfer and reaction mechanism of acrylic resin in leather processing. Note de contenu : - EXPERIMENTAL : Materials - Preparation of AF-labeled PAA (AF-PAA) - Analysis of fluorescence emission spectra - Determination of AF-PAA stability - Analysis of molecular weight - Observation of AF-PAA in retanned leather
- RESULTS AND DISCUSSION : Characteristics of AF-PAA - Visualization and quantification of AF-PAA in retanned leatherEn ligne : https://drive.google.com/file/d/1fSzpJ33m0_NsQCPVQc83DO_36ke--QHD/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27156
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXI, N° 11 (11/2016) . - p. 398-405[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 18460 - Périodique Bibliothèque principale Documentaires Disponible Waterproofing of sole leather / P. L. Muthiah in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 54, N° 5 (05/1970)
[article]
Titre : Waterproofing of sole leather Type de document : texte imprimé Auteurs : P. L. Muthiah, Auteur ; V. Mohanaradhakrishnan, Auteur Année de publication : 1970 Article en page(s) : p. 183-201 Langues : Anglais (eng) Catégories : Alun
Couleur
Cuir
Décapage
Essais (technologie)
Humidité -- Absorption:Eau -- Absorption
Imperméabilisation
Produits de nourriture du cuir
Retannage
Semelles
Traitement chimiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The continued and increasing competition from synthetic materials in ail branches of leather industry emphasises the importance of investigations concerned with the improvement of water resistance of leather. Literature survey indicates that a wide variety of materials and methods have been used for improving the water resistance of leather. A suitable material for this purpose demands the following qualities : (a) with a minimum quantity of the material considerable increase in water resistance ; (b) uniform effect throughout the thick-ness of the leather, otherwise the effect will be lost in short time ; (c) preservation of the air and water vapour permeability ; (d) retention of the qualities such as : grip, flexibility and colour ; (e) non-attainment of thermoplastic properties, i.e. the leather must be soft and flexible in a cold climate and should not be sticky at high temperature ; (f) the method of application must be simple ; (g) the materials must be easily available in the market in large quantities and must be cheap.
In order to find a suitable waterproofing material for vegetable tanned sole leather, a preliminary study was undertaken using various waterproofing materials and methods, viz. impregnation with different materials, retanning with zirconium, chromium and aluminium salts and basic aluminium sulphate treatment. Preparation of crust vegetable sole leather and the sampling method were the same as described earlier. The well known Kubelka's apparatus was used for determining the water absorption of leathers.Note de contenu : - Impregnation with different materials
- Retanning with zirconium, chromium and aluminium salts : Studies using basic aluminium sulphate - Studies on the improvements - Neutralisation of colour - Chemical treatments - Field tests
- Results and discussion : Effect of impregnation - Retanning - Studies using basic aluminium sulphate - Effect of oiling before alum treatment - Effect of oiling after alum treatment - Mechanism of waterproofing
- Studies on the improvement of colour
- Field tests
- Table 1 : Effect of waterproofing with various materials
- Table 2 : Effect of retanning and alum dipping
- Table 3 : Effect of stripping
- Table 4 : Effect of re-use of alum liquor
- Table 5 : Effect of oiling
- Table 6 : Colour of the leathers, processed by various methods
- Table 7 : Water absorption of leathers after different treatmentsEn ligne : https://drive.google.com/file/d/1j4LfXSuut-MMCX_O2ejEjIaa-jVTxilK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37008
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 54, N° 5 (05/1970) . - p. 183-201[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 007082 - Périodique Bibliothèque principale Documentaires Disponible Wet processing upholstery enhancement through technique / R. Kraus in WORLD LEATHER, Vol. 7, N° 1 (02/1994)
[article]
Titre : Wet processing upholstery enhancement through technique Type de document : texte imprimé Auteurs : R. Kraus, Auteur Année de publication : 1994 Article en page(s) : p. 30-32 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Chrome
Cuir d'ameublement
Cuirs et peaux -- Teinture
Huiles et graisses
Neutralisation (chimie)
Produits de nourriture du cuir
RetannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Trends in upholstery leathers have moved towards a softer feel with more natural characteristics. Change to manufacture is apparent, however, due to the demands of the ecologists. Tanners can no longer afford to alter their beamhouse and tanning methods to meet the needs of new leathers as change may affect the effluent produced.
Due to changes in demand the leather specialist has to adjust quicldy to new requirements as textures supplied today can be out of fashion tomorrow, but unfortunately environmental pressures have restricted choice of action. It is also recognised that more extensive development is needed to establish a new leather-line in a tannery without major problems.
This restricted situation has caused more effective cooperation between tanneries and the chemical supply industry, and this joint approach is becoming more important. Some types of leathers can only be produced as new chemical products are developed to achieve a desired result, and this especially applies to fatliquors. When working from a standard wet blue, the temper of the leather is largely determined by the fatliquoring agents as the major chemical component. Very different fatliquors are now available compared w earlier products, but these can basically be divided into three categories :
1. Basic lubrication agents made from natural oils that can be unstable to electrolytes and are seldom used alone.
2. Natural and synthetic fatliquors that are electrolyte resistant.
3. Fatliquors that are electrolyte resistant, colour fast, environmentally friendly and heat resistant. These fatliquors may be fog resistant for use on natural leathers and for automotive use. Hydrophobie agents can also be used that have oil-like properties and provide the leather with a soft handle.Note de contenu : - The use of fatliquor in pickle and tanning : Fatliquor use in the pickle bath
- Advantages in multi-additions of fatliquors : Fatliquor use in chrome retanning/neutralising
- The main fatliquor application : Retanning, dyeing and fatliquoring - Dyeing to shadeEn ligne : https://drive.google.com/file/d/1PXDhEPRsMWq-iZAZBDbVO9d0DwOOaDCj/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35170
in WORLD LEATHER > Vol. 7, N° 1 (02/1994) . - p. 30-32[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008094 - Périodique Bibliothèque principale Documentaires Disponible Yield of chrome tanned side leather / Samir Das Gupta in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 66 (Année 1982)
Permalink