[article]
| Titre : |
Microemulsion copolymers for retanning applications on leathers |
| Type de document : |
texte imprimé |
| Auteurs : |
G. V. Ramana, Auteur ; R. W. Sugumar, Auteur ; D. Premkumar, Auteur ; P. Saravanan, Auteur |
| Année de publication : |
2008 |
| Article en page(s) : |
p. 144 - 150 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675.2 Préparation du cuir naturel. Tannage |
| Résumé : |
The microemulsion polymerization method is used to synthesize tercopolymers of styrene, methyl methacrylate and methacrylic acid with finer particle dispersions. Four compositions of the monomers mixture are used in these syntheses. The copolymeriztion reactions are carried out at 70°C with potassium persulphate (KPS) as the initiator. Sodium lauryl sulphate (SLS) and n-heptanol (HA) are being used as the surfactant and cosurfactant combinations, respectively, in these reaction media.These experimental products are employed in retanning wet blue goat skins along with the fatliquoring agent, Balmol SXE. The offer of the experimental products are varied in the retanning experiments and the effects of these products on retanned goat skins are observed by measuring tensile strength, tearing strength and bursting strength. The copolymer products II and III containing 5 and 7.5 weight percents of methacrylic acid as comonomer units , respectively, in the copolymers show considerable improvement in these properties. Product I containing no methacrylic acid groups in the copolymer shows improvement in tensile strength and fall in other properties. Product IV containing 10 (%wt) of methacrylic acid groups in the copolymer does not show considerable improvement in these physical properties, the tensile strength decreases with the offer of the product, no uniform variation of tear strength with the offer level and the grain bursting strength increases with the offer of the product. Scanning electron micrographs (SEM) are obtained for the leathers retanned with product I and these SEM analyses reveal good filling of the product I in the leather matrix. |
| En ligne : |
https://drive.google.com/file/d/1OnFzPygFxGA9SGckE9oqkCa9gAHrVPlL/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=2569 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. CIII, N° 4 (04/2008) . - p. 144 - 150
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