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675 : Technologie du cuir et de la fourrure |
Ouvrages de la bibliothèque en indexation 675
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SB acrylic technology : closing the performance gap / Alexander K. Campbell in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. XCII, N° 1 (01/1997)
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Titre : SB acrylic technology : closing the performance gap Type de document : texte imprimé Auteurs : Alexander K. Campbell, Auteur ; Chol-Yoo Choi, Auteur Année de publication : 1997 Article en page(s) : p. 17-21 Langues : Américain (ame) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Acrylic finishes - Acrylic polymers have found extensive use in leather finishing.The basic properties that these polymers offer are softness, heat and light stability, and favorable economics. The SB line of polymers use new technology to obtain a soft hand with improved embossing plate release and print retention, higher flexibility, and now, better rub resistance. With improved performance, these polymers represent a new generation of acrylics that are alternatives to polyurethane and butadiene systems typically used in performance oriented applications. En ligne : https://drive.google.com/file/d/1lCYvJkDbw-GdyaT1lhaS6POzPUVLBhpT/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9085
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. XCII, N° 1 (01/1997) . - p. 17-21[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 006952 - Périodique Bibliothèque principale Documentaires Disponible Scanning electron microscopy of hides, skins, and leather / John R. Barlow in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXX (Année 1975)
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Titre : Scanning electron microscopy of hides, skins, and leather Type de document : texte imprimé Auteurs : John R. Barlow, Auteur Année de publication : 1975 Article en page(s) : p. 114-128 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Analyse
Microscopie électronique à balayageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This study outlines techniques that have been found reliable in preparing leather and wet pelt for examination by scanning electron microscopy (SEM). The use of camphene as an embedding material is proposed as a means of minimizing fiber distortion during sectioning. Osmic acid vapor has been found to be helpful in pre-treating very rough surfaces (e.g., suedes) for gold-palladium coating, which is necessary to minimize build-up of electric charge during examination at 7.5 kV.
Some examples of the information which can be obtained by the use
of scanning electron microscopy, and which is helpful in solving industrial problems, are also recorded in this paper.Note de contenu : - EXPERIMENTAL : A. Dry samples - B. Wet samples - using pickled sheepskin - C. Effect of camphene on finish binders
- RESULTS : Effect of camphene - Nomenclature - Dry samples - Wet samplesEn ligne : https://drive.google.com/file/d/1fxxGbdKLg-xyReg5T0oO9EHVRX8Yy9r1/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38782
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXX (Année 1975) . - p. 114-128[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008509 - Périodique Archives Documentaires Exclu du prêt Scanning probe microscopy. A useful tool in leather research / G. Reich in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 82, N° 1 (01-02/1998)
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Titre : Scanning probe microscopy. A useful tool in leather research Type de document : texte imprimé Auteurs : G. Reich, Auteur ; T. Taeger, Auteur ; W. Pompe, Auteur ; M. Mertig, Auteur ; J. Bradt, Auteur Année de publication : 1998 Article en page(s) : p. 11-14 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Optical microscopy, transmission electron microscopy (TEM) and scanning electron microscopy (SEM) are widely accepted investigation methods in fundamental and applied leather research. They are under further development, for instance by cryotechnique (cryomicroscopic SEM), rotary shadowing-TEM, use of confocal laser sanner and computer aided microscopy in general. The further possibilities and the limits of this method are physically substantiated and illustrated.
Currently, novel methods of scanning probe microscopy have attracted special attention in physics, chemistry, material science and biology, because they can resolve surface details down to atomic level. Especially, scanning for microscopy (SFM) shows the capability to image isolating surfaces, including biological specimens and coatings, with nanometer resolution. The main advantages for applications in biology are : the possibility of working in a liquid environment under physiological conditions, to get three-dimensional topographic information and the possibility of probing local forces e.g. to obtain information about the mechanical properties of the investigated specimen.
We have carried out SFM of leather. The investigations started with collagen monomers and collagen fibrils immobilized as different substrates. So far the best resolution we could achieve is to image rod-like individual collagen monomers with a diameter of 1.6 nm and the 67 nm-periodicity of native type I collagen fibrils. Several fibrils are twisted into bundles in the form of a right-handed matrix. Changes in fibril morphology after calcification have been investigated. The results show that mineralisation occurs with higher density mainly at crossover regions of collagen fibrils. It has been found that the formed hydroxyapatite crystallites are similar in size, typically between 50 and 100 nm.
Investigation on leather samples after various treatments demonstrate that the applied method is also suited to investigate more complex samples. The advantage of SFM in comparison to SEM is the possibility of use to investigate wet samples and to obtain topographic information with high imaging value.
In conclusion scanning probe microscopy, especially the scanning force microscopy (SFM), is recommended as an useful tool in leather research in addition to the traditional microscopic investigation methods.Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=7936
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 82, N° 1 (01-02/1998) . - p. 11-14[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 007020 - Périodique Bibliothèque principale Documentaires Disponible
Titre : Science for students of leather technology Type de document : texte imprimé Auteurs : R. Reed, Editeur scientifique Editeur : Oxford [Royaume-Uni] : Pergamon Press Année de publication : 1966 Collection : A modern course in leather technology num. 1 Importance : IX-278 p. Présentation : ill. Format : 20 cm ISBN/ISSN/EAN : 978-1-4831-2722-4 Prix : 58 E Note générale : Index Langues : Anglais (eng) Catégories : Cuirs et peaux
Cuirs et peaux -- Finition
Cuirs et peaux -- Teinture
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This volume is the first of a series of textbooks of leather science and technology, which in view of the parucity of books delaing with this subject, can therefore be recommended to students as reliable scientifically and as reflecting current industrial practice. This book provides a concise modern treatment of fundamentals. The method of presentation is modern since the significance of scientific knowledge in technological practice is continually stressed. Many recent advances in the cheistry of vegetable tannins, reactive dyes, chrome tanning complexes and polymer structure have been included. This book covers fundamental physical chemistry, macromolecules (including proteins and carbohydrates), lipids, skin structure, biological damage, the chemistry of chrome tanning materials, vegetable tannins, dyestuffs and pigments. It is designed to assist students at schools, colleges of technology and universities. Note de contenu : - Basic physical chemistry
- Macromolecules : proteins and carbohydrates
- Lipids (oils, fats and waxes)
- Surface physical chemistry
- Skin structure and the chemistry of collagen
- Insects and micro-organisms
- The chemistry of mineral tannage
- Vegetable tannins and syntans
- Dyestuffs and pigmentsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40421 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 24435 675 REE Monographie Bibliothèque principale Documentaires Disponible Screening of additives to reduce grain damage risk on unhairing by proteinase K / Mei Chen in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 2 (Année 2020)
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Titre : Screening of additives to reduce grain damage risk on unhairing by proteinase K Type de document : texte imprimé Auteurs : Mei Chen, Auteur ; Mingfang Jiang, Auteur ; He Li, Auteur ; Cheng Haiming, Auteur Année de publication : 2020 Article en page(s) : 9 p. Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Additifs
Criblage
Cuirs et peaux de bovins
Epilage enzymatique
Hydrolyse enzymatique
Inhibiteurs (chimie)
Ions métalliquesIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Enzymatic unhairing is a cleaner strategy for leather-making. It is a potential alternative to the traditional hair-burning process. However, several shortcomings, such as uncontrolled enzymatic reaction, and risk of grain looseness and damage have restricted the broad application of enzymatic unhairing. In this work, metal ions and organic additives were screened for lessening the hydrolytic activity of proteinase K to collagen fiber. Then, the selected additives were applied to the enzymatic unhairing process for bovine hide. The results showed that a suitable concentration of metal ions (Cu (II), Fe (III) and Al (III)) and organic additives (salicylate, laurate, adipate, gallate and epicatechin (ECG)) could diminish approximately 35% of the hydrolytic activity of proteinase K to collagen fibers. Then, the additives were applied for the bovine hide enzymatic unhairing process. Hydroxyproline determination in the unhairing float shows that applying additives could reduce collagen hydrolysis. The morphology results showed that the grain damage could be significantly reduced with the addition of the screened additives in the proteinase K enzymatic unhairing system, whereas the addition of ECG and gallate significantly slowed down the unhairing speed. This outcome provides new potential to reduce the risk of grain damage in enzymatic unhairing process. Note de contenu : - MATERIALS AND METHODS : Materials - Enzymatic activity assays - Effect of additives on hydrolytic activities of proteinase K - Determination of total protein (TP) content - Determination of hydroxyproline (Hyp) content - Scanning electron microscopy (SEM)
- RESULTS AND DISCUSSION : Screening of additives - Enzymatic unharing by proteinase K with additives
- Table 1 : The effect of the additives on the hydrolytic activity of proteinase K
- Table 2 : The results of enzymatic unhairing by proteinase K (150 U/g hide) with additives at 35 °C, pH 8.0DOI : https://doi.org/10.1186/s42825-020-00032-1 En ligne : https://link.springer.com/content/pdf/10.1186/s42825-020-00032-1.pdf Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37451
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 2 (Année 2020) . - 9 p.[article]Screening of bacteriocin production from moderately halophilic skin isolates to inhibit moderately halophilic / Pinar Caglayan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIII, N° 12 (12/2018)
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PermalinkScreening of industrially important enzymes produced by moderately halophilic bacteria isolated from salted sheep skins of diverse origin / Pinar Caglayan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXII, N° 6 (06/2017)
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PermalinkScreening of natural dyes from filamentous fungi and leather dyeing with Monascul purpureus extract / Wagner Fernando Fuck in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 2 (03-04/2018)
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PermalinkSeasonal variation in the intensity of ovine demodecosis / R. A. Venkatesan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 75 (Année 1991)
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PermalinkSeasonality in physico-chemical parameters of tannery wastewater passing through the East Calcutta wetland ecosystem / B. Chattopadhyay in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 88, N° 1 (01-02/2004)
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PermalinkLe séchage par déshumidification de l'air et ses appilcations en tannerie / Gérard Gavend in TECHNICUIR, N° 10 (12/1977)
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PermalinkPermalinkPermalinkPermalinkSeeking soft leathers with a tight grain / David Rabinovich in WORLD LEATHER, Vol. 14, N° 5 (08-09/2001)
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PermalinkSelf cleaning leathers - The effect of nano TiO2 in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 92, N° 5 (09-10/2008)
PermalinkSEM studies on the morphology of grafted casein films / N. Somanathan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. N° 71 (Année 1987)
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PermalinkPermalinkPermalinkSensory and instrumental research of leather softness / Ewa Marcinkowska in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 104, N° 2 (03-04/2020)
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