| Titre : |
Research and micro analysis of thin sheep leather and its moisture permeability after adding an acrylic coating |
| Type de document : |
texte imprimé |
| Auteurs : |
Zhong Anhua, Auteur ; Fang Songchun, Auteur ; Huang Zhuo, Auteur |
| Année de publication : |
2022 |
| Article en page(s) : |
p. 159-161 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Cuirs et peaux -- Analyse
Cuirs et peaux de moutons
Dynamique moléculaire
Modèles mathématiques
Perméabilité
Polyacryliques
Revêtements organiques
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
This paper focuses on the effect of temperature and humidity on the moisture permeability of thin sheep leather before and after acrylic coating. The arrangement of its protein fibres was studied by scanning electron microscopy. The fitted equations for the relationship between the moisture permeability of two types of leather and temperature and humidity at 1 atm were obtained by analysis. The equation for thin sheep leather was derived : Y, = 0.02357 T2+ 0.002228TH- 0.003354H2- 1.814T + 0.3431H + 26.34 and the equation for thin sheep leather after acrylic coating was:Y2= 0.004074 T 2 - 0.001988 TH + 0.001366H 2 - 0.2051 T - 0.1127H + 8.859. Combined with a molecular dynamics simulation, the reasons for the difference of moisture permeability between the two kinds of leather are analysed from the microscopic point of view, The RMSD values of 1 cgd before binding to acrylic acid molecules were found to fluctuate more at 40°C. At the same time, the Rg value is larger, so the molecular motion is more intense, the transfer rate of water molecules is faster, and the moisture permeability is greater.
RMSD (root mean square deviation of atomic positions) refers to the deviation between the structure of protein molecules and the initial structure in the process of molecular dynamics simulation. Rg refers to the geometric mean of the distance between all atoms in the protein molecule and the protein molecular mass centre. |
| Note de contenu : |
- EXPERIMENTAL PROCEDURES : Experimental instruments - Experimental maerials
- RESULTS AND DISCUSSION : Mathematical correlation model of moisture permeability with temperature and humidity for two types of sheep leather - Molecular dynamics simulation and microanalysis |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=37879 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 106, N° 4 (07-08/2022) . - p. 159-161
Aller sur edunet
Accueil
Research and micro analysis of thin sheep leather and its moisture permeability after adding an acrylic coating in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 106, N° 4 (07-08/2022)
