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Acrylic polymeric binder for leather finishing application / Michael Ifeanyichukwu Ugbaja / Saarbrücken [Germany] : Lambert Academic Publishing (2016)
Titre : Acrylic polymeric binder for leather finishing application : Water vapour permeability and some other physical properties of leathers - Effect of finish formulations Type de document : texte imprimé Auteurs : Michael Ifeanyichukwu Ugbaja, Auteur ; Ejila Amali, Auteur Editeur : Saarbrücken [Germany] : Lambert Academic Publishing Année de publication : 2016 Importance : IX-84 p. Présentation : ill. Format : 22 cm ISBN/ISSN/EAN : 978-3-659-91685-4 Prix : 49,90 E Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Cuirs et peaux -- Finition
Cuirs et peaux -- Propriétés physiques
Formulation (Génie chimique)
Liants
Perméabilité
Plan d'expérience
Polyacryliques
Polymérisation en émulsion
Retannage
Tannage
Vapeur d'eauIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : This book is a simple and concise introduction to the effect of polymeric binders in the performance of a finished leather. It aims at exposing the formulation requirements of certain acrylic resin binder suitable for leather finishing applications. The materials are presented in a manner to benefit both the students studying leather science and technology or leather engineering in tertiary institutions as well as those in the leather industry whose knowledge in this technology is deficient. Students of polymer science and technology will also appreciate the contents of this book as it tries to study the effect acrylic polymer resin in the performance of finished leathers. This book will assist mostly undergraduates in understanding the processes of leather making,formulation of finishing agents, properties and behavior of finished leather. It will also benefit those with little or no technical background in leather processes as well as those who have sophisticated background in science but no experience in the leather industry. It will also make for a good reading material for the general public that are yet to know what synergy exist between polymers and leather. Note de contenu : - GENERALITES : Description of leather - Forms of leather - Types of leather - Leather manufacturing processes - Acrylic polymer - Polymerisation techniques - Components of emulsion polymerisation reaction - Principle of emulsion polymerisation - Leather finishing
- REVIEW OF LITERATURE : General introduction - Synthetic resin dispersions for leather finishing - Synthesis of polymer dispersions - Characterisation of polymer dispersions and effect on properties of retanned leathers - Factors affecting physical properties of finished leathers - Retannage and properties of finished leathers - Water vapour permeability, wvp of finished leathers - Effect of important variables on water vapor permeability
- DESIGN OF EXPERIMENT : Experimental procedures
- RESULTS : Examination of resin binder - Physical testing of the finished leather substrate
- DISCUSSION
- CONCLUSION AND RECOMMENDATIONS
- ANNEXES : A. Some chemicals used in leather processing - B. Definition of some leather processing termsPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36813 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 23152 675 IFE Monographie Bibliothèque principale Documentaires Disponible Documents numériques
Acrylic polymeric binder for leather finishing application : Water vapour permeability and some other physical properties of leathers - Effect of finish formulationsURL Aliphatic anionic polyurethane microemulsion leather filling-retanning agent / Bao Lihong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 2 (03-04/2007)
[article]
Titre : Aliphatic anionic polyurethane microemulsion leather filling-retanning agent Type de document : texte imprimé Auteurs : Bao Lihong, Auteur ; Lan Yunjun, Auteur ; Shufen Zhang, Auteur Année de publication : 2007 Article en page(s) : p. 73-80 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Charges (matériaux)
Chimie analytique
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Formulation (Génie chimique)
Imperméabilisation
Microémulsions
Poids moléculaires
Polymères aliphatiques
Polyuréthanes
RetannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : The retanning process plays an important role in optimizing the leather’s colour, levelness, softness, fullness, and hydrophobicity. Polymer retanning agents are important materials for this process. The present study used maleic anhydride modified castor oil (MCO), PEG1000 (polyethylene glycol) and IPDI (isophorone diisocyanate) as main materials to synthesize polyurethane microemulsions (MC-PURs) and employed them to retan chrometanned leathers. The hydroxyl functionality of MCO was investigated by chemical and 1HNMR analysis, and confirmed to be about 2.0. The chemical structures of MCO, prepolymer and MC-PUR were characterized by IR.
The optimized synthesis formulation and polyurethane microemulsion MC-PUR3 for MC-PURs as retanning agent was selected by comparing the properties of retanned leathers, such as softness, fullness, grain tightness, tensile strength, extension at break, depth of shade, waterproof properties et al. Then, MC-PUR3 was characterized by means of DSC, TG/DTG and TEM techniques. SEM microgram of MC-PUR3 retanned leather shows that the fibres are well dispersed.Note de contenu : - EXPERIMENTAL PROCEDURES : Materials - Preparation of maleic anhydride modified castor oil (MCO) - Preparation of microemulsions of polyurethane filling retanning agents (MC-PURs) - Determination of molecular weight - H n.m.r. spectroscopy - Purification - FT-IR spectroscopy - Differential scanning spectroscopy - Thermo-gravimetric analysis - Transmission electron microscope analysis - Measurement of final dyebath exhaustion - Physical and waterproofness properties of leathers - Organoleptic properties of the final leathers - Scanning electron microscopic analysis
- RESULTS AND DISCUSSION : Determination of the average molecular weight, hydroxyl number and average hydroxyl functionality (Fn(OH)) of MCO - Determination of the average hydroxyl functionality of MCO by chemical analysis - Determination of the average hydroxyl functionality of MCO by 1HNMR - Chemical structure analysis by IR
- OPTIMIZATION OF RETANNING AGENT : Effect of MCO/PEG1000 mass ratio on the properties of retanned leathers - Effect of carboxyl content of MC-PUR on the properties of retanned leathers - Effect of NCO/OH molar ratio on the properties of retanned leathers - Thermal properties of MC-PUR3
- Table 1 : Basic formulations of MC-PURs
- Table 2 : Filling, retanning and wet finishing processes
- Table 3 : Effect of MCO/PEG1000 mass ratio on the properties of retanned leathers
- Table 4 : Effect of carboxyl content of MC-PUR on the properties of retanned leathers
- Table 5 : Effect of NCO/OH molar ratio on the properties of retanned leathersEn ligne : https://drive.google.com/file/d/19ti2BicD3kfHFF4Z4QLX1cSWPC0J39gs/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39037
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 2 (03-04/2007) . - p. 73-80[article]Alternative tanning agent for leather industry from a sustainable source : Dialdehyde starch by periodate oxidation / Cigdem Kilicarislan Ozkan in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVI, N° 3 (03/2021)
[article]
Titre : Alternative tanning agent for leather industry from a sustainable source : Dialdehyde starch by periodate oxidation Type de document : texte imprimé Auteurs : Cigdem Kilicarislan Ozkan, Auteur ; Hasan Ozgunay, Auteur Année de publication : 2021 Article en page(s) : p. 89-99 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Agents de tannage
Amidon dialdéhyde
Amidons -- Oxydation
Caractérisation
Cuirs et peaux -- Propriétés organoleptiques
Cuirs et peaux -- Propriétés physiques
Poids moléculaires
Tannage
Tannage -- Aspect de l'environnementIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Dialdehyde starches with different aldehyde content from native corn starch were prepared by sodium periodate oxidation to be used as a tanning agent in leather making. For this purpose, native corn starch was oxidized with sodium metaperiodate in different molar ratios. After oxidation processes, the yields, solubility in water and aldehyde contents of the obtained dialdehyde starches were determined as well as structure characterizations by Proton Nuclear Magnetic Resonance Spectroscopy, Fourier Transform Infrared Spectroscopy and Gel Permeation Chromatography. Evaluating the gel permeation chromatography data, the dialdehyde starch samples which were thought to be in appropriate molecular weight/size to penetrate into skin fibers were selected to be used in the tanning process. Their tanning abilities were evaluated by investigating hydrothermal stabilities, filling and fiber isolation characteristics and physical properties determined by mechanical tests and organoleptically. From the evaluation of the results, it was revealed that sodium metaperiodate oxidized starches which have appropriate molecular weight and adequate aldehyde content has a remarkable tanning effect and can be utilized as a tanning agent with the advantages of not necessitating pickling process which means saving time and simplifying the production but more importantly offering an important advantage from an environmental point of view. Note de contenu : - Characterizations
- Tanning properties of dialdehyde starch samples
- Table 1 : Tanning recipe for the pelt pieces
- Table 2 : Molecular weight distribution of native and oxidized starches
- Table 3 : Tanning properties of oxidized starches
- Table 4 : Physical properties of tanned leathers with oxidized starches
- Table 5 : Organoleptical properties of tanned leathers with oxidized starchesDOI : https://doi.org/10.34314/jalca.v116i3.4249 En ligne : https://drive.google.com/file/d/1Ao7z1sapfoabaz0Uek5C2uMsZkBOMAoh/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35436
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CXVI, N° 3 (03/2021) . - p. 89-99[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 22638 - Périodique Bibliothèque principale Documentaires Disponible An acrylic resin retanning agent with a reinforcing effect - Synthesised by hihg solids content microemulsion copolymerization / Wang Xuechuan in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 4 (07-08/2005)
[article]
Titre : An acrylic resin retanning agent with a reinforcing effect - Synthesised by hihg solids content microemulsion copolymerization Type de document : texte imprimé Auteurs : Wang Xuechuan, Auteur ; An Huari, Auteur ; Sun Ming, Auteur ; Luo Yanhong, Auteur ; Feng Jianyan, Auteur Année de publication : 2005 Article en page(s) : p. 164-168 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Copolymères en émulsion
Croûte (cuir)On entend par "cuir en croûte" des cuirs ayant subi les opérations jusqu'au tannage, à l'exclusion de toute opération de corroyage ou de finissage, mais qui, par opposition aux wet-blue ont été séchés.
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux de porcs
Granulométrie laser
Haut extrait sec
Latex
Microémulsions
Polyacryliques
Polymérisation en émulsion
Retannage
Tannage organique
Wet-blue (tannage)Peau tannée au chrome (le chrome donne une couleur bleue)Index. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : An acrylic resin nano-size latex whose colloidal particle size was about 20nm and solids content about 25% was prepared by a high solids content semicontinuous microemulsion copolymerization. The experimental product was employed in retanning drop [bottom] splits of pigs aiming to reinforce the leather. The offer of cross-linking agent and functional monomer were varied in the copolymerization experiment and their effect on the reinforcing function was investigated. The effect of colloidal particle size and dosage of nano-size latex on the reinforcing function also was verified.
The particle size of the latex was tested with a laser particle size analyzer, and the composition of the copolymer was analyzed by infrared spectrometry. Multifunction material test equipment was used in the physical testing of the retanned leather.
The result of the experiment showed: when the dosage of divinylbenzene (DVB) was 1.2% and the dosage of acrylic acid (AA) 0.8%, the reinforcing performance was the highest. When the colloidal particle size decreased from 64.2nm to 16.3nm, the reinforcing effect was also enhanced.
The tensile strength increased by 68%, and the tear strength improved 44% after the drop splits of pigs were retanned with 2% acrylic resin nano-size latex (with respect to the shaved wet blue weight). The effect of the dosage of sodium lauryl sulphate (SLS), n-pentanol (PA), ammonium persulfate (ASP) and AA on the colloidal particle size was also studied.Note de contenu : - EXPERIMENTAL DETAILS : Materials - Synthesis
- APPLICATION OF NANO-SIZE LATEX IN RETANNING CHROME TANNED PIG DROP SPLITS : Characterization
- RESULTS AND DISCUSSION : Colloidal particle size of the microemulsion copolymer - The IR spectra of BA/MMA/DVB copolymers prepared by microemulsion copolymerization - The effect of functional monomer on the reinforcing function - The effect of cross-linking agent on the reinforcing function - The effect of colloidal particle size on the reinforcing function - The relationship between dosage of retanning agent and reinforcing effect
- Table 1 : Recipes used in the series of experiments and average particle size of synthesized latexes
- Table 2 : Process details for the retanning applications of nano-size latex on wet blue pig drop splitsEn ligne : https://drive.google.com/file/d/1GoIENUWkqhu85g-LTxdP-0cZzXD-IvPo/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39249
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 4 (07-08/2005) . - p. 164-168[article]Application of amphoteric polymers in the process of leather post-tanning / Xuechuan Wang in JOURNAL OF LEATHER SCIENCE AND ENGINEERING, Vol. 3 (Année 2021)
[article]
Titre : Application of amphoteric polymers in the process of leather post-tanning Type de document : texte imprimé Auteurs : Xuechuan Wang, Auteur ; Sun Siwei, Auteur ; Xing Zhu, Auteur ; Guo Peiying, Auteur ; Liu Xinhua, Auteur ; Chunlin Liu, Auteur ; Meng Lei, Auteur Année de publication : 2021 Article en page(s) : 9 p. Langues : Anglais (eng) Catégories : Agents de tannage
Composés amphotériques
Cuirs et peaux
Polymères -- Synthèse
Post-tannageIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : With the characteristics of controllable charge and environmental friendliness, amphoteric polymers can be used in post-tanning process to solve the problems that arise during leather making and are caused by the low absorption rate of single-charge chemicals, incompatibility with new tanning methods, and complex operation process. In this review, the structure, performance, and preparation of amphoteric polymers are reported. Then, the charge change of collagen during different tanning and pH treatments is introduced. Finally, the application and development of amphoteric polymers during the post-tanning process of leather making are discussed. This review has certain guiding significance to the preparation and application of amphoteric polymers for tanning system. Note de contenu : - STRUCTURE, PROPERTIES, AND SYNTHESIS METHODS OF AMPHOTERIC POLYMERS : Structure and properties of amphoteric polymers - Synthetic methods of amphoteric polymers
- AMPHOTERIC PROPERTIES OF COLLAGEN AFTER TANNING :
- RESEARCH PROGRESS OF AMPHOTERIC POLYMER DURING POST-TANNING : Retanning agent - Fatliquoring agent - Other materials
- CONCLUSIONS AND PROSPECTS : Development of amphoteric polymers with different structures for leather making - Study on the interaction mechanism between amphoteric polymers and leather
Exploration of characterization methods - Clean application process of amphoteric materials in post-tanningPermalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37474
in JOURNAL OF LEATHER SCIENCE AND ENGINEERING > Vol. 3 (Année 2021) . - 9 p.[article]Application of nonionic gemini aliphatic polyurethane surfactant for improving the performance of vegetable tanned leather / Shuangquan Lai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 11 (11/2019)
PermalinkAugmentation of garment sheepskin type properties in goatskins : Role of chromium-silica tanning agent / N. N. Fathima in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 6 (11-12/2003)
PermalinkAuxiliaries for the leather industry / Zschimmer & Schwarz (Max-Schwarz-Straße 3-5, Lahnstein, Germany) / Lahnstein [Germany] : Zschimmer & Schwarz (2012)
PermalinkBiomass-based tanning agent for sustainable leather manufacture via cyanuric chloride modified chitooligosaccharide / Min Jiang in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 10 (10/2023)
PermalinkCharacterization and mechanism of zinc salts as tanning agents / Shan Cao in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CVIII, N° 11 (11/2013)
PermalinkPermalinkA cleaner method for low-chrome tanning with no-salt pickling / Lu Cui in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 5 (09-10/2017)
PermalinkCleaner processing of bovine wet-white : synthesis and application of a novel chrome-free tanning agent based on an amphoteric organic compound / Luo Jianxun in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 99, N° 4 (07-08/2015)
PermalinkCollagen hydrolysate : Soluble skin applied in post-tanning processes : Part 2 - Interaction with acyrlic retanning agents / Carlos S. Cantera in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 86, N° 5 (09-10/2002)
PermalinkComparative study of glucose and sulfur dioxide reduced chrome powders / Ding Xiaoliang in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 103, N° 1 (01-02/2019)
PermalinkCopolymères à base de tannins et déchets lignocellulosiques avec des matériaux synthétiques en substitution des sels de chrome pour applications en substitution / Caroline Simon / 2002
PermalinkDeciphering the role of individual retanning agents on physical properties of leathers / Murali Sathish in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 3 (03/2019)
PermalinkDetermination of free formaldehyde in leather chemicals / Yudan Yi in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXIV, N° 10 (10/2019)
PermalinkDevelopment of chrome-free tanning in supercritical CO2 fluid using Zr-Al-Ti complex / Liu Xinhua in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXI, N° 12 (12/2016)
PermalinkDevelopment of nano bio aldehyde tanning agent for sustainable leather manufacture / Arjunan Yasothai in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CXVIII, N° 4 (04/2023)
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