Organometal-initiated polymerization of vinyl ketones. III. Polymerization of methyl isopropenyl ketone initiated by the triethylaluminum–methyl isopropenyl ketone complex

Autor:	A. R. Lyons, E. Catterall
Rok vydání:	1971
Předmět:	chemistry.chemical_classification chemistry.chemical_compound Monomer Ketone Chain-growth polymerization Polymerization Bulk polymerization Chemistry Polymer chemistry Radical polymerization General Engineering Cationic polymerization Trimer
Zdroj:	Journal of Polymer Science Part A-1: Polymer Chemistry. 9:1335-1342
ISSN:	1542-9350 0449-296X
DOI:	10.1002/pol.1971.150090514
Popis:	The kinetics and mechanism of the triethylaluminum–methyl isopropenyl ketone complex-initiated polymerization of methyl isopropenyl ketone (3-methyl-3-butene-2-one) in toluene have been studied over a range of temperature. Equimolar quantities of monomer and triethylaluminum were premixed to form the initiator species prior to the addition of the excess monomer for polymerization. Initial and overall reaction rates indicate a first-order dependence on monomer and initiator concentrations. The overall activation energy for the polymerization is 52 ± 3 kJ/mole. Molecular weight distributions were bimodal, with peaks corresponding to the trimer and high molecular weight material. The kinetic data are consistent with a coordinate polymerization mechanism.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::000e41c134bdef620e12f5b95890f684 https://doi.org/10.1002/pol.1971.150090514 Zobrazit plný text záznamu Plný text