| Titre : |
Synthesis and mechanical properties of polyacrylic acid resin retanning agent |
| Type de document : |
texte imprimé |
| Auteurs : |
Zou Xianglong, Auteur ; Lan Yunjun, Auteur ; Zhang Qinghua, Auteur ; Zhan Xiaoli, Auteur |
| Année de publication : |
2014 |
| Article en page(s) : |
p. 127-130 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Acide polyacrylique
Analyse mécanique dynamique
Caractérisation
Humidité -- Absorption
Polymères -- Synthèse
Retannage
|
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
Polyacrylic acid retanning agent (PAA), PAA-1 and PAA-2 with weight average molecular weights (Mw) of 14.4 x 103 and 23.1 x 103g/mol respectively, were prepared by water solution homopolymerization of acrylic acid monomer. The effects of molecular weight and moisture absorbency on glass transition temperature (T) and mechanical properties of PAA were investigated. The results showed that PAA-1 and PAA-2 have similar capacity for moisture absorbency, namely about 14.5% at 20°C(T=20°C) and 65% relative humidity (RH=65%). After equilibrating for 48 hours at T=20°C, RH=65%, the T of PAA-1 and PAA-2 fell from 86.17°C and 90.71°C to -11.44°C and -3.09°C respectively. Dynamic mechanical analysis (DMA) showed the storage moduli of PAA-1 and PAA-2 were significantly decreased at -26.99°C and -8.78°C respectively, the storage modulus of PAA-2 was higher than that of PAA-1 due to its higher molecular weight. |
| Note de contenu : |
- MATERIALS AND METHODS : Materials - Synthesis of PAA - Experimental procedure and characterization
- RESULTS AND DISCUSSION : FT-IR analysis - Moisture absorption of PAA - DMA |
| En ligne : |
https://drive.google.com/file/d/1o6rYJ3cgN9-nNdNj-T2EIrXpE4U7QbBG/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=21533 |
in JOURNAL OF THE SOCIETY OF LEATHER TECHNOLOGISTS & CHEMISTS (JSLTC) > Vol. 98, N° 3 (05-06/2014) . - p. 127-130
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