Accueil
Catégories
Ajouter le résultat dans votre panier Affiner la recherche
Etendre la recherche sur niveau(x) vers le bas
[article]
Titre : Synthetic retanning agents : Part 2 of an experimental study - colorimetric testing Type de document : texte imprimé Auteurs : Ramón Palop, Auteur ; Joan Parareda, Auteur ; Olga Ballùs, Auteur Année de publication : 2008 Article en page(s) : p. 40-42 Langues : Anglais (eng) Catégories : Colorimétrie
Cuirs et peaux
RetannageTags : Peaux 'Agents synthétiques retannage' Coloration Interaction 'Test colorimétrique' 'Etude expérimentale' Anionisation Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : In practice, great difficulty exists is knowing where and how the synthetic retanning agents are distributed. In this second part the authors attempt to 'visualise', by means of special reagents, the penetration and distribution of the synthetic agents being tested. This process will lead to the 'anionisation' concept as a distribution factor for the synthetic retanning agents and their interaction with the dyestuff. En ligne : https://drive.google.com/file/d/1Evgh-c0LJXBzDyTDq3HY3DGpBKx_dcq2/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=9849
in LEATHER INTERNATIONAL > Vol. 210, N° 4785 (06/2008) . - p. 40-42[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 010480 - Périodique Bibliothèque principale Documentaires Disponible Tambaqui (Colossoma macropomum) leather tanning : a study on the influence of skin morphology on the physical-mechanical properties of leather / Jessica Valéria Campos in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIX, N° 2 (02/2024)
[article]
Titre : Tambaqui (Colossoma macropomum) leather tanning : a study on the influence of skin morphology on the physical-mechanical properties of leather Type de document : texte imprimé Auteurs : Jessica Valéria Campos, Auteur ; Fernanda Ramalho Procopio, Auteur ; Waldomiro Barioni Júnior, Auteur ; Ana Rita de Araujo Nogueira, Auteur Année de publication : 2024 Article en page(s) : p. 91-100 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés physiques
Cuirs et peaux de Poissons
Essais de résilience
Essais dynamiques
Peau -- Anatomie et histologie
Prétannage
Retannage
Statistique
TannageIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : The fish production chain presents losses of up to 35%, generating a large amount of waste. Using these residues to produce valueadded materials boost fish production towards a sustainable path. The use of fish skin to obtain leather is increasingly attracting the market for fashion and luxury products. Besides considered an exotic material with a unique design, fish leather also has good mechanical properties. Due to the morphology of fish skin, different mechanical responses can be observed, depending on the leather cutting direction. However, there are no specific technical standards for sampling this material. In this scenario, 45 Tambaqui skins were tanned with chromium associated with oxazolidine, and the mechanical properties of the leather were evaluated in four cutting directions: parallel, perpendicular, dorsal-ventral and ventral-dorsal, all concerning the cephalocaudal line of the fish. Skin and leather micrographs revealed layers of parallel collagen fiber bundles distributed in superimposed layers oriented obliquely to the preceding one. Insertions of collagen fibers perpendicular to the leather surface were also observed, joining the deeper layers to the superficial layers. Tensile strength (TS) and elongation (E) results indicated statistical differences, with higher TS results for the perpendicular cut and greater elongation for the parallel cut. The tear strength was higher for the ventral-dorsal cut, statistically differing from the parallel cut. The data indicate that the cutting direction of the specimen can influence the physical-mechanical behavior of the leather, reinforcing the importance of standardization for the qualitative evaluation of fish leather. Note de contenu : - MATERIAL AND METHODS : Material - Methods : Fish skin composition - Histological analysis of Tambaqui skin - Tanning process - Tambaqui leather scanning electron microscopy (SEM) analysis - Tensile and tear strength tests - Statistical analysis
- RESULTS AND DISCUSSION : Tambaqui skin composition - Histological analysis of Tambaqui skin - Scanning electron microscopy (SEM) analysis of Tambaqui leather - Tensile and tear strength tests
- Table 1 : Pre-tanning process conditions of Tambaqui skin
- Table 2 : Tanning process conditions of Tambaqui skin
- Table 3 : Retanning and finishing process conditions of Tambaqui leatherDOI : https://doi.org/10.34314/jalca.v119i2.8326 En ligne : https://drive.google.com/file/d/1GfVdF1NLXOJXyYEPqwuxmpRJ-wmLdA86/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=40469
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXIX, N° 2 (02/2024) . - p. 91-100[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 24447 - Périodique Bibliothèque principale Documentaires Sorti jusqu'au 14/05/2024 Tannage/retannage methods for reduction of between-skin colour variation / J. R. Barlow in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61 et 62 (Années 1977 et 1978)
[article]
Titre : Tannage/retannage methods for reduction of between-skin colour variation Type de document : texte imprimé Auteurs : J. R. Barlow, Auteur Année de publication : 1978 Article en page(s) : p. 121-128 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorimétrie
Cuirs et peaux
Retannage
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Full chrome leathers were prepared, using the same total amount of tanning agent for all samples but varying the proportions offered in the initial tannage and in the retannage (after storage). Quantitative measurements showed that those batches which received a low level of initial tannage and a substantial retannage had less colour variation than those given a fuller initial tannage and smaller retannage. The improvement was seen even after dyeing to a medium brown. Only after dark, surface dyeing were colour differences of the batches brought to a similar level.
Chrome retan leathers were also made, with the chrome tanning being carried out in either one step or as a low-level initial process with a retannage to the required Cr2O3 content immediately before subsequent processing. Batches of skins from the latter method were move level than those from the one-step chrome tanning process, with the improvement still being considerable after vegetable retanning and dyeing to a medium brown. Bleaching, by the use of a proprietary Syntan, only marginally reduced the variation of colour within any pack.Note de contenu : - Instrumental measurement of colour variation and its relevance to visual assessments
- Colour measurement
- Fig. 1 : Mean ΔE for individual batches at different stages of processing full-chrome leathers
- Fig. 2 : Mean ΔE for paired batches at different stages of processing full-chrome leathers
- Fig. 3 : Percentage of skins differing from mean by more than 1.0 ANLAB unit (full-chrome leathers)
- Fig. 4 : Mean ΔE at different stages of processing chrome retan leathers
- Fig. 5 : Percentage of skins differing from mean by more than 1.0 units. Chrome retan leathers
- Table 1 : Processing for full-chrome leathers
- Table 2 : Processing of chrome retan leathers
- Table 3 : Processing of chrome retan leathers - Details
- Table A : Results of subjective testing - Numbers of assessors seeing difference
- Table B : Statistical significance of colour assessments
- Table C : Results of colour measurements of commercial leathers
- Appendix 1 : Instrumental measurement of colour variation
- Appendix 2 : Relationship between visual assessment and instrumental ΔE values
- Appendix 3 and 4 : Results of colour measurements of commercial leathers
En ligne : https://drive.google.com/file/d/1ZVrm05-hhU61Rgx4fHY2rH5i4yHL5juJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31848
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61 et 62 (Années 1977 et 1978) . - p. 121-128[article]Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008597 - Périodique Archives Documentaires Exclu du prêt Tannage/retannage methods for reduction of between-skin colour variation / John R. Barlow in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 61, N° 6 (11-12/1977)
[article]
Titre : Tannage/retannage methods for reduction of between-skin colour variation Type de document : texte imprimé Auteurs : John R. Barlow, Auteur Année de publication : 1977 Article en page(s) : p. 121-128 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Colorimétrie
Cuirs et peaux
Retannage
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Full chrome leathers were prepared, using the same total amount of tanning agent for all samples but varying the proportions offered in the initial tannage and in the retannage (after storage). Quantitative measurements showed that those batches which received a low level of initial tannage and a substantial retannage had less colour variation than those given a fuller initial tannage and smaller retannage. The improvement was seen even after dyeing to a medium brown. Only after dark, surface dyeing were colour differences of the batches brought to a similar level.
Chrome retan leathers were also made, with the chrome tanning being carried out in either one step or as a low-level initial process with a retannage to the required Cr2O3 content immediately before subsequent processing. Batches of skins from the latter method were move level than those from the one-step chrome tanning process, with the improvement still being considerable after vegetable retanning and dyeing to a medium brown. Bleaching, by the use of a proprietary Syntan, only marginally reduced the variation of colour within any pack.Note de contenu : - Instrumental measurement of colour variation and its relevance to visual assessments
- Colour measurement
- Fig. 1 : Mean ΔE for individual batches at different stages of processing full-chrome leathers
- Fig. 2 : Mean ΔE for paired batches at different stages of processing full-chrome leathers
- Fig. 3 : Percentage of skins differing from mean by more than 1.0 ANLAB unit (full-chrome leathers)
- Fig. 4 : Mean ΔE at different stages of processing chrome retan leathers
- Fig. 5 : Percentage of skins differing from mean by more than 1.0 units. Chrome retan leathers
- Table 1 : Processing for full-chrome leathers
- Table 2 : Processing of chrome retan leathers
- Table 3 : Processing of chrome retan leathers - Details
- Table A : Results of subjective testing - Numbers of assessors seeing difference
- Table B : Statistical significance of colour assessments
- Table C : Results of colour measurements of commercial leathers
- Appendix 1 : Instrumental measurement of colour variation
- Appendix 2 : Relationship between visual assessment and instrumental ΔE values
- Appendix 3 and 4 : Results of colour measurements of commercial leathersEn ligne : https://drive.google.com/file/d/1ZVrm05-hhU61Rgx4fHY2rH5i4yHL5juJ/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=34122
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 61, N° 6 (11-12/1977) . - p. 121-128[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 007115 - Périodique Bibliothèque principale Documentaires Disponible The characterization of acrylic syntans for retanning chrome leather / William C. Prentiss in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXXII (Année 1987)
[article]
Titre : The characterization of acrylic syntans for retanning chrome leather Type de document : texte imprimé Auteurs : William C. Prentiss, Auteur ; Geoffrey J. Ward, Auteur Année de publication : 1987 Article en page(s) : p. 96-105 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Cuirs et peaux
Polyacryliques
Retannage
Syntans
Tannage au chromeIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Increasing economic and environmental pressures on the leather industry have resulted in the introduction of syntans based on alternative chemistry. By far the largest increased has been seen in the class of retanning agents based on acrylic chemistry.
The proliferation of acrylic based syntans has led to some confusion concerning the optimum use of these materials.
The work reported in this paper characterises a number of different acrylic syntans in terms of their ability to tan hide and explores the behaviour of these products on chrome leather. Some guidelines for the selection of products for retanning are suggested.En ligne : https://drive.google.com/file/d/1gxQsbF9b3QdjMXRea7fqNABVyyDsF4Tr/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8985
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXXII (Année 1987) . - p. 96-105[article]Réservation
Réserver ce document
Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 008087 - Périodique Bibliothèque principale Documentaires Disponible The correlation between the comonomer ratios of vinyl polymer tannages and their application properties / Jianzhong Ma in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 2 (03-04/2002)
PermalinkThe effect of retannage and nature of the finish on water vapour permeability / A. W. Landmann in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 54, N° 1 (01/1970)
PermalinkThe preparation and application of a nanocomposite tanning agent-MPNS-SMA / Hui Pan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 4 (07-08/2005)
PermalinkThe relationship between the organoleptic properties of leather and the aggregate structure of collagen fibres / Ren Bianli in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 6 (11-12/2018)
PermalinkThe role of acrylics in pigskin processing / William C. Prentiss in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 63, N° 2 (03-04/1979)
PermalinkThe role of post tanning processes on the embossing properties of upholstery leathers / K. O. Schoppe in WORLD LEATHER, Vol. 14, N° 8 (12/2001 - 01/2002)
PermalinkThe use of aluminium, titanium and magnesium complexes in pretanning, tanning and retanning operations / P. Arbaud in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 74 (Année 1990)
PermalinkThe use of inert oplymer spheres in retannage and fatliquoring floats. Reduced chemical use and environmental advantage / R. P. Daniels in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 105, N° 2 (03-04/2021)
PermalinkLe travail de peaux de mouton pour cuirs nappa à vêtements, cuirs velours et chevrettes / H. Roth / Leverkusen [Allemagne] : Bayer (n.d.)
PermalinkTreatment of wet blue with fillers produced from quebracho-modified gelatin / Maryann M. Taylor in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVII, N° 12 (12/2012)
PermalinkUltrasound-assisted process intensification in leather making : diffusion rate enhancement in retanning process / Venkatasubramanian Sivakumar in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 7 (07/2013)
PermalinkUpgrading of rural garad-tanned crust leathers / A. E. Musa in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 96, N° 1 (01-02/2012)
PermalinkUtilisation of phenolsulphonic acid to hydrolyse chrome shavings in preparation of composite condensates for leather retanning / Junqing Zhang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 4 (07-08/2018)
PermalinkPermalinkValorization of pomegranate peel waste as retanning agent in leather industry and investigation of its effect on prevention of Cr(VI) formation / Cigdem Kilicarislan Ozkan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 2 (02/2023)
Permalink