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Application of surfactants in leather making with nano-tech / Ma Jianzhong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 2 (03-04/2005)
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Titre : Application of surfactants in leather making with nano-tech Type de document : texte imprimé Auteurs : Ma Jianzhong, Auteur ; Yun Chu, Auteur ; Liu Lingyun, Auteur ; Hu Jing, Auteur ; Gao Dangge, Auteur Année de publication : 2005 Article en page(s) : p. 80-82 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Dioxyde de silicium
Montmorillonite
Nanoparticules
Nanotechnologie
Polyacryliques
polymères vinyliques
Poudres
Surfactants
Tannage combinéLe tannage combiné se dit des tannages qui allient deux familles ou genre de tannage pour obtenir un résultat additionnant les qualités complémentaires des tannins mis en œuvre par exemple Chrome-Végétal ou Chrome-Synthétique
Tannage minéralTannage dans lequel interviennent différents minéraux. Le plus répandu est le tannage aux sels de chrome, mais aussi à l’aluminium
Tannage organiqueIndex. décimale : 675 Technologie du cuir et de la fourrure Résumé : Surfactants play an important role in the preparation, characterization and application of nano materials because of their particular structure and properties. In this paper, the authors introduce the application of surfactants in nano leather chemicals on the basis of our study on nano-tanning agents and nano-coating agents. Further application prospects for surfactants in this field is forecast. Note de contenu : - Applications in preparation of nano tanning agent
- Application in the preparation of nanocoating agents
- Micro emulsified fatliquoring agent
- Table 1 : Physical-mechanical properties of coating agent film with different SAA used in sol preparationEn ligne : https://drive.google.com/file/d/1ElBgSKD4WSt3ypaeUac_941yAC4Q7bsz/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39598
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 2 (03-04/2005) . - p. 80-82[article]Preparation and application of vinyl polymer-mmt nano tanning agent / Ma Jianzhong in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 89, N° 5 (09-10/2005)
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Titre : Preparation and application of vinyl polymer-mmt nano tanning agent Type de document : texte imprimé Auteurs : Ma Jianzhong, Auteur ; Yun Chu, Auteur ; Gao Dangge, Auteur ; Lv Bin Dai Jianfang, Auteur Année de publication : 2005 Article en page(s) : p. 181-185 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Agents de tannage
Caractérisation
Cuirs et peaux -- Propriétés mécaniques
Cuirs et peaux -- Propriétés physiques
Mesure
Montmorillonite
Nanoparticules
Perméabilité
Polymères -- Synthèse
polymères vinyliques
Tannage au chrome
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : In this paper, montmorillonite (MMT) was first modified with dimethyldiallyl ammonium chloride (referred to as DMDAAC) and cetyl trimethylammonium bromide (CTAB) through a cation exchanging reaction. The modified MMT and the vinyl polymer were then used to prepare composites which were then characterized by XRD. Finally, the vinyl polymer/CTAB modified MMT (abbreviated to VP/C-MMT) was applied in the leather making process to examine its tanning properties.
The results of XRD show that the interlayer spacing of the modified MMT is received are 1.40nm and 1.99nm for DMDAAC-MMT and CTAB-MMT respectively, while the d-spacing distance of pristine MMT is only 1.23nm. The composites of DMDAAC modified MMT and VP are phase separated, while CTAB modified MMT formed intercalated nanocomposites with VP.
The application results show, that the shrinkage temperature of leather tanned by VP/C-MMT nano-tannage associated with 2% chrome under optimum process conditions can be raised to 90°C, the strength properties and the water permeability of tanned leather are closely similar to those of a 8% chrome tanned leather, meanwhile, the incrassation rates [thickness increment ratios] are far geater than for the 8% chrome tanned leather. We conclude that the nano tannage is an appropriate application in a reduced-chrome tannage.Note de contenu : - EXPERIMENTAL PROCEDURE : Major chemicals - Synthesis of vinyl polymer - Preparation of modified MMT - Preparation of composites - Application of VP/C-MMT nano tannage - Characterization and measurement
- RESULTS AND DISCUSSIONS : Characterization - Application results -
- Table 1 : Chrome decreased tanning procedure
- Table 2 : Standard chrome tanning procedure
- Table 3 : Shrinkage temperature and thickness increment ratio of the tanned leather
- Table 4 : Physical-mechanical properties of leather sample
- Table 5 : Water permeability of leather sampleEn ligne : https://drive.google.com/file/d/14nXC1S3vof-31cyfIIaJY75R8hkNTgOw/view?usp=share [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39227
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 89, N° 5 (09-10/2005) . - p. 181-185[article]The preparation and application of a montmorillonite-based nanocomposite in leather making / Jianzhong Ma in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 87, N° 4 (07-08/2003)
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Titre : The preparation and application of a montmorillonite-based nanocomposite in leather making Type de document : texte imprimé Auteurs : Jianzhong Ma, Auteur ; Xinjiang Chen, Auteur ; Yun Chu, Auteur ; Zongsui Yang, Auteur Année de publication : 2003 Article en page(s) : p. 131-134 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Absorption
Adsorption
Caractérisation
Eaux usées -- Epuration
Huiles et graisses
Maroquinerie
Matériaux -- Modifications chimiques
Montmorillonite
Sels d'ammonium
Température de retraitIndex. décimale : 675.2 Préparation du cuir naturel. Tannage Résumé : Montmorillonite (MMT) has been modified with a long chain quaternary ammonium salt through a cation exchange reaction. The extent of the exchange was characterised by XRD (X-ray Diffraction), FT-IR (Fourier Transform Infrared Spectroscopy) and by the determination of CEC (Cation Exchange Capacity).The results prove that alkylammonium ions have taken the place of Na+ ions in Na+ - Montmorillonite (Na-MMT) and that the inter-laminar distance has been enlarged.
The possibility of using Na-MMT and organic-montmorillonite (O-MMT) in the treatment of wastewater from tanneries by utilizing their adsorption properties has been studied. The result shows that Na-MMT and O-MMT can absorb fatliquors to a certain extent.
A series of tanning experiments have been carried out to compare the tanning properties of Na-MMT, O-MMT and O-MMT/Cr3+. The results suggest that Na-MMT and O-MMT have some tanning capability, and that the composite O-MMT/Cr3+ with a very low content of Cr3+ can produce leather of light colour with a shrinkage temperature above 90oC.Note de contenu : - EXPERIMENTAL PROCEDURE :
- Preparation of organic-MMT
- Organic modification of MMT
- Sorption of grease from waste water by Na-MMT and O-MMT
- TANNING WITH NA-MMT AND O-MMT :
- General procedure for tanning
- TANNING WITH O-MMT/CR3+ COMPOSITE :
- Preparation of O-MMT/Cr3+ composite
- RESULTS AND DISCUSSIONS :
- Analysis of CEC, FT-IR and XRD of O-MMT
- Results of sorption of grease in waste water by Na-MMT and O-MMT
- Results of Tanning with Na-MMT and O-MMT
- Table 1 : CEC results for O-MMT
- Table 2 : Results of sorption of grease in waste water by Na-MMT and O-MMT
- Table 3 : Shrinkage temperatures of different tannages
- Table 4 : Thickness increment ratio for different tannages
- Table 5 : Shrinkage temperature of different tannagesEn ligne : https://drive.google.com/file/d/1pTRjBEUgi5rzRX5SyWaG1WAIhJvVgRML/view?usp=drive [...] Format de la ressource électronique : Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39767
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 87, N° 4 (07-08/2003) . - p. 131-134[article]