| Titre : |
Graft polymerization VII. Novel source of reductant for graft polymerization of leather |
| Type de document : |
texte imprimé |
| Auteurs : |
Edward H. Harris, Auteur ; Helen A. Gruber, Auteur ; Maryann M. Taylor, Auteur |
| Année de publication : |
1980 |
| Article en page(s) : |
p. 6-15 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Index. décimale : |
675 Technologie du cuir et de la fourrure |
| Résumé : |
Glutaraldehyde retannage has been found to provide an in situ source of reductant in the redox couple for the free radical initiated graft polymerization of methyl methacrylate onto chrome tanned sheepskin. Persulfate ion was the oxidant used. Monomer to polymer conversion was essentially quantitative. The graft efficiency was independent of monomer and oxidant levels, as well as of the graft molecular weight, which average 79 percent. The best graft efficiencies previously found with completely external redox couples were on the order of 60 percent. Acid hydrolysis was used to isolate the grafted chains for viscosity molecular weight determination. Molecular weights of the isolated grafts increased amounts of oxidant at a give level of monomer did not bring about the expected reduction in the graft molecular weight. These results suggest that there are a limited number of reductant sites available o which the increasing levels of oxidant and monomer had no additional effect. Physical test data from these leathers showed changes from the control leathers similar to those found in previous studies. |
| Note de contenu : |
- Materials and procedure
- Preparation for physical testing and chemical analysis
- Isolation and viscometry of the grafted polymer |
| En ligne : |
https://drive.google.com/file/d/1dWUsL6jY7NjLxQeKORYP6Nuhd1_-Yhug/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=17697 |
in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA) > Vol. LXXV (Année 1980) . - p. 6-15
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Graft polymerization VII. Novel source of reductant for graft polymerization of leather in JOURNAL OF THE AMERICAN LEATHER CHEMISTS ASSOCIATION (JALCA), Vol. LXXV (Année 1980)
