| Titre : |
The microstructure changes of collagen fibres introduced by a novel metal complex : Zr-Al-Ti |
| Type de document : |
texte imprimé |
| Auteurs : |
Chen Yining, Auteur ; Dan Nianhua, Auteur ; Xiao Shiwei, Auteur ; Wang Kangjian, Auteur ; Dan Weihua, Auteur |
| Année de publication : |
2018 |
| Article en page(s) : |
p. 12-17 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Collagène
Complexes métalliques
Cuirs et peaux -- Analyse
Diffractométrie de rayons X
Fourier, Spectroscopie infrarouge à transformée de
Microscopie à force atomique
Microscopie électronique à balayage
Microstructures -- Analyse
Thermogravimétrie
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Collagen fibres may be changed by reaction with a Zr-Al-Ti complex bath in structure and properties. Specifically the microstructure changes of collagen fibres have been investigated through X-Ray diffraction (XRD), atomic force microscope (AFM) and scanning electron microscope (SEM), accompanied by thermal stability analysis carried out with differential scanning calorimeter (DSC) and thermogravimetric analyzer (TG). Owing to the interactions brought about by the Zr-AI-Ti complex, the D-pattern of collagen fibres has been shortened from 67nm to around 57nm, while the feature triple helices have not been destroyed. Meanwhile, collagen fibres have obviously been wrapped by Zr-Al-Ti complex to form a tight membrane : These effects are due to the interactions between gaps in collagen's characteristic gap-overlap structure in D-pattern, as well as interactions between neighbouring collagen fibres laterally. The changes of structure Ied to different thermal stabilities. The thermal denaturation temperature has finally been improved from 66.4°C to 82.6°C, and residual weight increased from 25.02% to 33,36% in the temperature range of 50-800°C. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Sample preparation - Fourier transform-infrared spectroscopy (FTIR) measurements - X-ray diffraction (XRD) - Scanning electron microscope observation (SEM) - Atomic force microscope observation (AFM) - Thermal analysis
- RESULTS AND DISCUSSION : Influence of Zr-Al-Ti complex on the spatial structure of collagen fibres - Influence of Zr-Al-Ti complex on the morphology of collagen fibre - Influence of Zr-Al-Ti complex on the thermal stability of collagen fibre
- FIGURES : 1. FTIR spectra of collagen fibres treated with Zr-Al-Ti complex - 2. WXRD diagrams of collagen fibres treated with Zr-Al-Ti complex - 3. Changes of D-pattern of collagen fibres treated by Zr-Al-Ti complex - 4. Schematic illustration of microstructure change of collagen fibres - 5. Morphology of collagen fibres treated with Zr-Al-Ti complex - 6. DSC thermographs of collagen fibres treated with DMT-II - 7. TG and DTG curves of collagen fibres treated with Zr-Al-Ti complex
- TABLE : Weight loss at each defined process and residual weights of different collagen fibres determined by TG analysis |
| En ligne : |
https://drive.google.com/file/d/1AAwT1cqR31HyC_7X3wlP12lu33J1WiGI/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=30009 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 102, N° 1 (01-02/2018) . - p. 12-17
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The microstructure changes of collagen fibres introduced by a novel metal complex : Zr-Al-Ti in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 102, N° 1 (01-02/2018)
