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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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Nano-TiO2 in-situ hybrid polyurethane with enhanced permeability for PU leather manufacture / Chen Yi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIV, N° 6 (06/2009)
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Titre : Nano-TiO2 in-situ hybrid polyurethane with enhanced permeability for PU leather manufacture Type de document : texte imprimé Auteurs : Chen Yi, Auteur ; Zhang Xiuli, Auteur ; Haojun Fan, Auteur ; Bi Shi, Auteur Année de publication : 2009 Article en page(s) : p. 222-231 Note générale : Bibliogr. Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : A novel organic-inorganic nano-hybrid process combined with industrialized wet-phase inversion coating-forming method was developed for the modification of polyurethane (PU) leather coating with in-situ-generated nano-TiO2. The cross section morphologies, water vapor permeability, gas permeability, mesopore size distribution and specific surface area of the hybrid samples were investigated. SEM analysis indicated that when the TiO2 concentration increased from 0.25wt% to 1.00wt%, the average size of nano particles, which dispersed uniformly throughout the polymer matrix, increased correspondingly from 60-80nm to 90-120nm without obvious agglomerates observed. After nano hybridization, both water vapor and gas (hydrogen, nitrogen and oxygen) permeability of samples were found to increase with an increasing concentration of nano-TiO2, which was explained as voids formed at the polymer-nano particle interface due to phase incompatibility. The existence of such voids in samples was proven in the nitrogen adsorption/desorption experiment, by the detection of extra mesopores and higher specific surface area than predicted values. With industrial applicability in the manufacture of PU synthetic leather, the wet-phase inversion hybrid process developed in this study may be of great potential for improving the wear comfort of PU coated leather products. En ligne : https://drive.google.com/file/d/1LTDoSWaTJBLxAnAf8ybzWgidq7pSR9rK/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=5987
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIV, N° 6 (06/2009) . - p. 222-231[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 011388 - Périodique Bibliothèque principale Documentaires Disponible Nanocomposites of acrylate-organosilicon resin/layered silicate for leather finishing / Zhang Xiaolei in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 6 (11-12/2006)
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Titre : Nanocomposites of acrylate-organosilicon resin/layered silicate for leather finishing Type de document : texte imprimé Auteurs : Zhang Xiaolei, Auteur ; Liu Qinglan, Auteur ; Zhang Weiping, Auteur Année de publication : 2006 Article en page(s) : p. 250-253 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Finition
Gonflement (physique)
Humidité -- Absorption:Eau -- Absorption
Matériaux hybrides
Montmorillonite
Organosilicones
Polyacrylates
Polymères -- Propriétés mécaniques
Réaction de couplage
Silanes
Silicates
solvantsIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : A type of organophilic montmorillonite (O-MMT) was prepared with a silane coupling-agent. A polyacrylate-organosilicon and its layered silicate nanocomposites (PLS) for leather finishing were prepared by emulsion polymerization. The O-MMT was examined by infrared spectrum (FT-IR). wide-angle X-ray diffraction (WAXD). The results show that the distance hetween the silicate layers increased indicating that the intercalating agents did enter into the gallery space of the montmorillonite.
Films of the nanocomposites (PLS) were examined by WAXD and differential scanning calorimetry (DSC), the results prove the formation of exfoliated nanocomposites. Film formation was easy and the film was completely transparent with gond tenacity. The mechanical properties and flexural modulus of the nanocomposite film were improved; especially noteworthy was the glass transition temperature of the film which decreased.Note de contenu : - Preparation of organophilic montmorillonite
- Preparation of PLS
- Examination of products
- Table 1 : The mechanical properties of pure polymer and PLS
- Table 2 : The water absorption and solvent swelling of the film
- Table 3 : Properties of pure polymer and PLS nanocomposites in leather finishingEn ligne : https://drive.google.com/file/d/1A9O_s8IpjfY755VjdnvkWCVv6LXD15Ut/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39258
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 6 (11-12/2006) . - p. 250-253[article]Nanotechnologies for leather manufacturing : a review / Chen Yi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVI, N° 8 (08/2011)
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Titre : Nanotechnologies for leather manufacturing : a review Type de document : texte imprimé Auteurs : Chen Yi, Auteur ; Haojun Fan, Auteur ; Bi Shi, Auteur Année de publication : 2011 Article en page(s) : p. 260-273 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux
Cuirs et peaux -- Finition
Eaux usées -- Epuration
Matériaux hybrides
Nanoparticules -- Toxicologie
Nanotechnologie
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Recently, increasing interests have been directed towards incorporating nanotechnologies into leather manufacturing, which offer cost-effective improvements in leather performances, as well as enabling the industry to meet stricter legislation regarding environmental safety. In order to guide the leather technologists and chemists worlwide, this article reviews state of the art related to existing nanotechnologies in leather manufacturing processes, including tanning, finishing and effluent treatment, over the past decade. The emphasis is placed on the mechanism by which nanotechnologies improve conventional processes, impressive performances of the resultant leather and possible obstacles that cloud technical development in this field. In the end, potential health and environment risks associated with the incorporation of nanotechnologies, which are particularly important for daily necessities such as leather but have been basically overlooked by many researchers involved, are also addressed. Note de contenu : - Nano tannage
- Finishing with polymer nanocomposites
- Effluent treatment by nanotechnology
- Potential risks of nanotechnologyEn ligne : https://drive.google.com/file/d/1gzyXs9S9i5evbGhpDey44xchwwVQB548/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11884
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CVI, N° 8 (08/2011) . - p. 260-273[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 013211 - Périodique Bibliothèque principale Documentaires Disponible Natural and artificial ageing of sheepskin collagen and its importance in leather manufacture / K. T. W. Alexander in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 72 (Année 1988)
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Titre : Natural and artificial ageing of sheepskin collagen and its importance in leather manufacture Type de document : texte imprimé Auteurs : K. T. W. Alexander, Auteur ; Betty M. Haines, Auteur ; S. G. Shirley, Auteur ; R. L. Sykes, Auteur Année de publication : 1988 Article en page(s) : p. 170-176 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The stability of the collagen molecule is not constant but changes with the age of the naimal at the time of slaughter. In the case of sheep, skins from immature animals show different responses to the early stages of the leather manufacturing process and are commercially importnt. These differences are manifested by inconsistent and irregular surface appearance of the grain in the finished leather. Historically, in vitro "ageing" of semi-processed (pickled) pelts has made for more consistent leather. Work on the alternative approach of self-regulating, "chemical ageing" of untanned pelt is considered, along with an assessment of the laboratory technique developed from isometric tension phenomena which have proved most useful in monitoring these changes. A preliminary report into the role played by removal of proteoglycans in obtaining product regularity is included. Note de contenu : 1. Effect of age on the hydrothermal stability of sheepskin collagen.
2. The introduction of collagen-specific cross-links into the immature sheepskin.
3. Development of an industrial process.En ligne : https://drive.google.com/file/d/16x1Hm_YeYufGUQBz-iyfTv8JBdYeUYNB/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9109
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 72 (Année 1988) . - p. 170-176[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007134 - Périodique Bibliothèque principale Documentaires Disponible Natural and synthetic leather - a microstructural comparison / Qu Jian-Bo in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 1 (01-02/2008)
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Titre : Natural and synthetic leather - a microstructural comparison Type de document : texte imprimé Auteurs : Qu Jian-Bo, Auteur ; Zhang Chuan-Bo, Auteur ; Feng Jian-Yan, Auteur ; Gao Fu-tang, Auteur Année de publication : 2008 Article en page(s) : p. 8-13 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir
Cuir synthétique
Etudes comparativesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This paper details our comparison of the structure of superfine fibre synthetic leather and natural leather cattle hide. The differences between the microfilaments and between the two-layer braiding [interweaving] of synthetic leather and the three-layer braiding [interweaving] of natural leather were observed from the view of microstructure, and studied by the scanning electron microscope (SEM). The influence of fibre structure, braiding form and leather’s structure on the physical and chemical properties are discussed. The results showed that synthetic leather simulates the microstructure of natural leather because the superfine fibre is similar to the fineness and structure of the fibril. The natural leather has a stereoscopic structure with the continuously changing degree of fibre crosslinking. The synthetic leather has a three-dimensional structure of superfine fibre non-wovens and microporous polyurethane. The uniform braiding structure of the synthetic leather is its advantage, but it is restricted technically by the lack of a grain layer. Therefore, reducing the fibre fineness, increasing braiding density, number of layers and simulating a grain layer structure are the required direction of development for synthetic leather to better simulate natural leather. Note de contenu : - MATERIALS AND INSTRUMENTS
- STRUCTURE OBSERVATIONS : Observation of fibre structure and braiding form [interweaving] - Observation of structures and shapes
- RESULTS AND DISCUSSIONS : Comparison of fibre structure - Comparison of fineness and specific surface - Fibre flexural rigidity and mechanical analysis - Comparison of fibre braiding state [interweaving] - Comparison of leather body structureEn ligne : https://drive.google.com/file/d/133nvgtNsy4_OLlf3UF2TLrYn0HvfpPwR/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38915
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 92, N° 1 (01-02/2008) . - p. 8-13[article]Natural approach to improving light fastness of a leather dyed with a microbial colorant / Pandey Sudha in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 9 (09/2016)
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PermalinkNatural dyeing of leathers using natural materials / Jonnalagadda Raghava Rao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 3 (02/2008)
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PermalinkNatural fibers reinforced chrome shaving composites for sound absorption applications / D. Hemalatha in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 11 (11/2018)
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PermalinkPermalinkNatural leather protein's thermal stability at high temperature conditions : analyzed by AMBER software / Zhong Anhua in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 100, N° 5 (09-10/2016)
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PermalinkNatural/open leather drying in contrast with controlled drying / D. S. Roosevelt in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXV (Année 1990)
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PermalinkPermalinkNear infrared and two-dimensional correlation infrared spectroscopic study on the heat denaturation of collagen in aqueous solution / Junling Guo in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 6 (06/2012)
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PermalinkNegative effects of haloversatile bacteria in salt on skins and their control with direct electric current in the leather industry / Haider Sabah Abdulhusein in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 6 (11-12/2023)
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PermalinkPermalinkNeoteric oxidizing agent for chamois process / Bindia Sahu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 9 (09/2019)
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PermalinkNetwork structure and thermotropic property of type I collagen fibrils / Ju Haiyan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 6 (11-12/2012)
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PermalinkNeutral protease assisted low-sulfide hair-save unhairing based on pH-sensitivity of enzyme / Yunhang Zeng in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 9 (09/2016)
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PermalinkPermalinkNew acoustic methods for nondestructive evaluation of leather quality / Cheng-Kung Liu in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CIII, N° 3 (03/2008)
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