[article]
| Titre : |
Lubrication of leather with mixtures of polyethylene glycol and oil |
| Type de document : |
texte imprimé |
| Auteurs : |
Cheng-Kung Liu, Auteur ; Nicholas P. Latona, Auteur |
| Année de publication : |
2006 |
| Article en page(s) : |
p. 132-139 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Moisture loss due to humidity decreases in the surrounding environment can result in area shrinkage, and therefore area yield. In addition, adequate moisture content is essential to the physical properties of leather, such as softness and mechanical strength. One of the problems, however, associated with leather quality is that traditional lubricants ("fatliquors," consisting of oils and surfactants) do not promote the retention of essential moisture, making the leather fibers prone to over-drying. We have recently developed a formulation of lubricants that consists of a mixture of oils and low molecular weight polyethylene glycol (PEG). Leather treated with PEG mixtures showed increased moisture retention due to the humectant effect of PEG on the leather fibers. We also characterized the lubrication of samples using an acoustic emission technique. The samples without any lubricants showed twin peaks on the plot of hit rate versus time. This implied that a non-uniform fracture occurred in the leather structure that was not lubricated. In contrast, leather lubricated with PEG and oil mixtures showed a steady increase in hit rate with time until it fractured after only one major peak of hit rate. Moreover, after the treated leather samples were heated at an elevated temperature, such as 90 °C, observations showed that the tensile strength retention of treated leather increases with PEG concentration in the fatliquoring bath. This implies that PEG increases the heat resistance of leather. |
| En ligne : |
https://drive.google.com/file/d/1LwUB_V80Wd7HYM1_n0lpyRm-xGUhya6j/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=4016 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CI, N° 4 (04/2006) . - p. 132-139
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Lubrication of leather with mixtures of polyethylene glycol and oil in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. CI, N° 4 (04/2006)
