| Titre : |
Research on formaldehycle emission characteristics of leather with porous structure by sealed jar method |
| Type de document : |
texte imprimé |
| Auteurs : |
Yuan Xuzheng, Auteur ; Wang Xuechuan, Auteur ; Lu Weina, Auteur ; Jiang Sujie, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 284-289 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Chromatographie en phase liquide à hautes performances
Cuirs et peaux -- Analyse
Cuirs et peaux -- Effets de la température
Emission de polluants
Formaldéhyde
Matériaux poreux
|
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Formaldehyde release tests of leather with porous structures were carried out according to ISO 17226-3 standard-sealed jar method. Effects of temperature on the release behaviour were investigated. The formaldehyde emission model in sealed system was established according to the law of mass transfer under several reasonable assumptions and verified by the fitting of actual release data.
The results showed that formaldehyde emission could be divided into three stages : the linear free release, barrier release and chemical release stages. The linear release .time inversely correlated with mass transfer coefficient of leather. The temperature had a significant promotion impact on release during linear release time. The higher the temperature was, the faster the formaldehyde release. Different types of leather showed different release characteristics because of porosity. The average release speed for sheepskin was faster than that of cowhide at the same temperature. However, with the increase of temperature, the increase in the rate of release speed of cowhide was greater. From 30°C to 60°C, the speed for sheepskin increased 19.39% for every increase of 1 degree Celsius by average, and that of cowhide increased 29.92%. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials - Pretreatment of leather samples - Procedure for the determination of formaldehyde emission by the HPLC method - Determination of porosity of leather by carbon tetrachloride permeation method - SEM observation - Effect of temperature on release behaviour - Release kinetics of leather
- RESULTS AND DISCUSSION : Results of the porosity of leather - SEM images of leather cross section - Effect of temperature on formaldehyde emission - Theoretical assumptions of the release model and derivation of release equations - Collection and fitting of actual release data |
| En ligne : |
https://drive.google.com/file/d/1fKSsaEFWV3nSAOt2XPelqnVLEZ_DWo6I/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29666 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 101, N° 6 (11-12/2017) . - p. 284-289
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Research on formaldehycle emission characteristics of leather with porous structure by sealed jar method in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC), Vol. 101, N° 6 (11-12/2017)
