| Titre : |
Coatings derived from novel, soybean oil-based polymers produced using carbocationic polymerization |
| Type de document : |
texte imprimé |
| Auteurs : |
Samim Alam, Auteur ; Bret J. Chisholm, Auteur |
| Année de publication : |
2011 |
| Article en page(s) : |
p. 671-683 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Huile de soja
Polyaddition
Polyvinyl éther
Ressources renouvelables
Revêtements:Peinture
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
In this study, a process was developed to obtain vinylether-functional monomers containing fatty acid pendent groups directly from soybean oil (SBO) using base-catalyzed transesterification. In addition, a carbocationic polymerization process was developed for the vinylether monomers, which allowed for high molecular weight polymers to be produced without consuming any of the vinyl groups present in the fatty acid portion of the monomers. Compared to SBO, which possesses on average 4.5 vinyl groups per molecule, the polyvinylethers based on the soybean oil-derived vinylether monomers (polyVESFA) possess tens to thousands of vinyl groups per molecule depending on the polymer molecular weight produced. As a result of this difference, coatings based on polyVESFA were shown to possess much higher crosslink density at a given degree of functional group conversion compared with analogs based on conventional SBO. In addition, the dramatically higher number of functional groups per molecule associated with polyVESFA results in gel-points being reached at much lower functional group conversion, which was shown to dramatically reduce cure-time compared with SBO-based analogs. Based on the results obtained, it appears that these new renewable materials may have tremendous commercial utility in the coatings industry. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Synthesis of the vinylether of SBO fatty acids (VESFA) - Synthesis of the polymer of VESFA (polyVESFA) - Synthesis of epoxidized polyVESFA (E-polyVESFA) - Synthesis of acrylated polyVESFA (A-polyVESFA) - Coating preparation - Instrumentation and procedures.
- RESULTS AND DISCUSSION : VESFA synthesis - Synthesis and properties of polyVESFA - Coatings cured using autoxidation - Coatings produced by epoxy/amine-cure - Coatings produced by cationic photocure - Coatings produced by free radical photocure. |
| DOI : |
10.1007/s11998-011-9360-z |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-011-9360-z.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12594 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 8, N° 6 (11/2011) . - p. 671-683
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Coatings derived from novel, soybean oil-based polymers produced using carbocationic polymerization in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 8, N° 6 (11/2011)
