Application of bio-itaconic acid acrylic polymer in leather processing / Tungmin Wu in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 107, N° 1 (01-02/2023)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 107, N° 1 (01-02/2023) . - p. 5-10 Titre : Application of bio-itaconic acid acrylic polymer in leather processing Type de document : texte imprimé Auteurs : Tungmin Wu, Auteur ; Suehuai Gau, Auteur ; Peng Jie Liu, Auteur Année de publication : 2023 Article en page(s) : p. 5-10 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acide polyacrylique bio-itaconique Cuirs et peaux -- Epaisseur Déchets -- Réduction Gonflement (physique) Industrie -- Pollution -- Lutte contre Matériau plein Polymères -- Synthèse Sels de sodium Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Biomass material is a kind of environmental protection material, which can be applied to reduce pollution in the leather industry. In this research, biomass raw materials (waste rice stalks) were solid fermented by inoculating with appropriate strains to produce itaconic acid products. The itaconic acid products and traditional leather chemicals were used respectively in leather processing. Two types of leather were tested, namely upper leather and split leather. The fullness and thickness of the finished leathers, also the COD (Chemical Oxygen Demand), BOD (Biochemical Oxygen Demand) and SS (suspended solids) of the residual liquids were tested and compared. The results show that the itaconic acid products could improve the fullness of the finished leather and more importantly could reduce the pollutants of the residual liquids thus enhancing environmental benefits. Note de contenu : - SYNTHESIS OF ITACONIC ACRYLIC ACID POLYMER PRODUCTS : Synthesis of traditional leather chemical acrylic acid products (AA) - Synthesis of bio-itaconic acrylic acid polymer - APPLICATION AND TESTING : Experiment materials and equipment - Influence of different ratios of bio-itaconic acrylic acid polymer/traditional polyacrylic acid sodium salt on the fullness and thickness of leather - Influence of reaction time on the leather fullness - Influence of different pH values on the leather fulness - Analysis of the redisual liquide - RESULTS AND DISCUSSIION : Influence of different ratios of bio-itaconic acrylic acid polymer/traditional polyacrylic acid sodium salt on the fullness and thickness of leather - Influence of reaction time on the leather fullness - Influence of different pH values on the leather fullness - Analysis of the residual liquors - Table 1 : Ratio of bio-itaconic acid polymer/traditional polyacrylic acid sodium salt for different groups of drums En ligne : https://drive.google.com/file/d/1Iu_V5SDTwq-KKKmdiXT74NwJRUzeKO4G/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=38870 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
23893	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Evaluation of leather handle character by discriminatory two class analysis / Zhang Xiao-Lei in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 91, N° 5 (09-10/2007)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 91, N° 5 (09-10/2007) . - p. 201-207 Titre : Evaluation of leather handle character by discriminatory two class analysis Type de document : texte imprimé Auteurs : Zhang Xiao-Lei, Auteur ; Liu Qing-Lan, Auteur ; Zhang Wei-Ping, Auteur Année de publication : 2007 Article en page(s) : p. 201-207 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuir Cuirs et peaux -- Propriétés mécaniques Douceur (toucher) Matériau plein Poignée en cuir Statistique Toucher Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : The hand evaluation method has been used to characterize the handle of leather (softness, fullness and elasticity) for many years. However, there is a certain subjective element affecting the final result. It would be valuable to set up a scientific theory and find a parameterized objective test method for leather handle character. In this paper, research results were analyzed to determine whether there was a interrelation between the handle character (softness, fullness and elasticity) and mechanical parameters measured at specific technical states. Softness can be characterized by bending coefficient (Kb) ; fullness can be characterized by compression index (Kc); stretchability by lastometer coefficient (K1) and elasticity by bending stress relaxation attenuation constant (αb) and bending stress attenuation (K). The statistical method of discriminatory two class analysis (DATC) was there adopted to characterize the handle of leather. The corresponding experiment and the application of DATC in the evaluation of leather handle character was carried out and the DATC results were found to be significant at a level greater than 99%. The findings indicate that the DATC method can be regarded as a comprehensive analysis method to, objectively and correctly, characterize the handle of leather. Note de contenu : - Interrelated research : Compressibility of leather - Bending property of leather - Lastometer property of leather - The scientific evaluation of leather handle : Evaluation of leather character - Discriminatory analysis of two classes - The application of DATC in the evaluation of leather handle character - Determination of standard samples - The specific examples of standard samples - Contrast between the results of the discriminatory analysis and HEM : - Table 1 : Instrumentally measured mechanical properties of the samples - Table 2 : The results of DATC - Table 3 : The variable parameters of the standard samples - Table 4 : The analysis results of the standard samples - Table 5 : The contrasting results of DATC and HEM En ligne : https://drive.google.com/file/d/1pCyU16SZsC5C1zqibitDvukXFlIl-ckY/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39013 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

The determination of some physical properties of leather / W. P. Walker in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 54, N° 11 (11/1970)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 54, N° 11 (11/1970) . - p. 398-404 Titre : The determination of some physical properties of leather Type de document : texte imprimé Auteurs : W. P. Walker, Auteur Année de publication : 1970 Article en page(s) : p. 398-404 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Cuirs et peaux -- Propriétés physiques Matériau plein Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Although entitled "The Determination of Some Physical Properties", this paper deals mainly with the determination of one particular physical property, namely the "fullness". This property is best defined in a negative way in that in a full leather there is an absence of intrinsic stiffness. The fullness of a leather sample is the inverse of the bending modulus. The important word in this definition is intrinsic. A manual assessment of the softness of a leather sample is affected not only by the intrinsic stiffness of the fibre weave, but by the thickness of the leather and by other factors. It is important to the tanner to be able to determine the intrinsic stiffness of the leather. This property of fullness we determine on the Pierce Flexometer. This apparatus was originally used by Pierce' to determine the properties of textiles but was subsequently adapted by Conabere2 of the B.L.M.R.A. to the determi¬nation of leather properties. The experimental work used in this paper was carried out by Lee and Whitton using a version of the Pierce Flexometer. For this paper I have taken as illustrations of the usefulness of fullness determinations, two investigations made in our laboratories, the first concerning the production of a white leather of suitable properties, the second the selection of the best blend of synthetic and vegetable materials for retanning chromed stock. In these experiments, mixtures of two tanning materials were used and the properties of the different leathers obtained from the different tanning mixtures were related to the composition of the mixtures used. Using this method a tanner can find the mixture of tanning materials which will give him the desired characteristics in his leather or, as is more usual, the best compromise in characteristics. En ligne : https://drive.google.com/file/d/1fshmpz7mPIq9vp6fr0ip7KoE_MWpuaRi/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37023 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
007088	-	Périodique	Bibliothèque principale	Documentaires	Disponible

The principle and method of testing leather fullness and softness / Peng Wenli in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 90, N° 3 (05-06/2006)  

[article]  inJOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 90, N° 3 (05-06/2006) . - p. 117-122 Titre : The principle and method of testing leather fullness and softness Type de document : texte imprimé Auteurs : Peng Wenli, Auteur ; Zhang Xiaolei, Auteur ; Chen Shuru, Auteur Année de publication : 2006 Article en page(s) : p. 117-122 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Contraintes (mécanique) Cuirs et peaux -- Propriétés physiques Douceur (toucher) Lastomètre Matériau plein Index. décimale : 675 Technologie du cuir et de la fourrure Résumé : Our work is aimed at evaluating the character of leather in a quantitative manner. We have studied the principle and method of testing leather fullness and softness by compression and Lastometer type experiments. A variety of Lastometer apparatus for testing softness had been designed and manufactured. Some parameters, such as compression/decompression and fullness work, have been calculated using the experimental data. The results are coincident with those of HEM (hand evaluation method). This testing procedure appears to be reliable for measuring leather fullness and softness. Note de contenu : - PRINCIPLE - METHODS : Materials - Instruments - Steps in the testing - DESIGNE OF LEATHER LASTOMETER TYPE TESTER - RESULTS AND DISCUSSION : Analysis of Leather Compressibility - Analysis of leather softness testing results En ligne : https://drive.google.com/file/d/1CuTKsQx48q6jguuViYeE0jRrm6jnaZJ-/view?usp=share [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39144 [article]

Exemplaires

Code-barres	Cote	Support	Localisation	Section	Disponibilité
aucun exemplaire

---

1 (1 - 4 / 4)