Atom Transfer Radical Polymerization of Methyl Methacrylate Mediated by Grubbs 1st and 2nd Generation Catalysts: Insight into the Active Species

Registro completo de metadados
MetadadosDescriçãoIdioma
Autor(es): dc.contributorUniversidade Estadual Paulista (UNESP)-
Autor(es): dc.creatorAfonso, Maria Beatriz A.-
Autor(es): dc.creatorGoncalves, Lucas G.-
Autor(es): dc.creatorBorim, Patricia-
Autor(es): dc.creatorSa, Jose Luiz S.-
Autor(es): dc.creatorGoi, Beatriz E.-
Autor(es): dc.creatorCarvalho-, Valdemiro P.-
Data de aceite: dc.date.accessioned2021-03-10T23:45:41Z-
Data de disponibilização: dc.date.available2021-03-10T23:45:41Z-
Data de envio: dc.date.issued2018-11-26-
Data de envio: dc.date.issued2018-11-26-
Data de envio: dc.date.issued2017-01-01-
Fonte completa do material: dc.identifierhttp://dx.doi.org/10.21577/0103-5053.20160314-
Fonte completa do material: dc.identifierhttp://hdl.handle.net/11449/159608-
Fonte: dc.identifier.urihttp://educapes.capes.gov.br/handle/11449/159608-
Descrição: dc.descriptionFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)-
Descrição: dc.descriptionPrope-
Descrição: dc.descriptionProcesso FAPESP: 2013/10002-0-
Descrição: dc.descriptionPrope: 2180/002/14-PROPe/CDC-
Descrição: dc.descriptionRuthenium benzylidene complexes were evaluated as catalysts in atom-transfer radical polymerization (ATRP) of methyl methacrylate (MMA) under different reaction conditions. The mechanism by which Grubbs 1st and 2nd generation catalysts mediate olefin metathesis has been studied, little is known regarding the mechanism of ATRP reaction promoted by these complexes. Conversion and semilogarithmic kinetic plots as a function of time were correlated to the different catalysts and reaction conditions; especially in the presence of Al(OiPr)(3) as additive. Molecular weight (M-n) and polydispersity index (PDI) values changed with different catalysts in the presence or absence of Al(OiPr)(3). Kinetic studies by H-1 NMR revealed that two complexes in the presence of Al(OiPr)(3) are converted into ATRP-active with the dissociation of PCy3, but with the benzylidene group preserved. More controlled polymerizations were achieved using Grubbs 1st and, the presence of Al(OiPr)(3) improved the control levels for both catalysts.-
Formato: dc.format1407-1413-
Idioma: dc.languageen-
Publicador: dc.publisherSoc Brasileira Quimica-
Relação: dc.relationJournal Of The Brazilian Chemical Society-
Relação: dc.relation0,357-
Direitos: dc.rightsopenAccess-
Palavras-chave: dc.subjectmethyl methacrylate-
Palavras-chave: dc.subjectruthenium-
Palavras-chave: dc.subjectATRP-
Palavras-chave: dc.subjectGrubbs catalysts-
Título: dc.titleAtom Transfer Radical Polymerization of Methyl Methacrylate Mediated by Grubbs 1st and 2nd Generation Catalysts: Insight into the Active Species-
Tipo de arquivo: dc.typelivro digital-
Aparece nas coleções:Repositório Institucional - Unesp

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