Long-Lived Layered Silicates-immobilized 2,6-Bis(Imino)pyridyl Iron (II) Catalysts for Hybrid Polyethylene Nanocomposites by In Situ Polymerization: Effect of Aryl Ligand and Silicate Modification (Articolo in rivista)

Type

• Articolo in rivista (Classe)
• Prodotto della ricerca (Classe)

Label

• Long-Lived Layered Silicates-immobilized 2,6-Bis(Imino)pyridyl Iron (II) Catalysts for Hybrid Polyethylene Nanocomposites by In Situ Polymerization: Effect of Aryl Ligand and Silicate Modification (Articolo in rivista) (literal)

Anno

• 2009-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

• 10.1002/pola.23172 (literal)

Alternative label

• Leone G; Bertini F; Canetti M; Boggioni L; Conzatti L; Tritto I (2009)
  Long-Lived Layered Silicates-immobilized 2,6-Bis(Imino)pyridyl Iron (II) Catalysts for Hybrid Polyethylene Nanocomposites by In Situ Polymerization: Effect of Aryl Ligand and Silicate Modification
  in Journal of polymer science. Part A, Polymer chemistry
  (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

• Leone G; Bertini F; Canetti M; Boggioni L; Conzatti L; Tritto I (literal)

Pagina inizio

• 548 (literal)

Pagina fine

• 564 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

• http://onlinelibrary.wiley.com/doi/10.1002/pola.23172/abstract (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

• 47 (literal)

Rivista

• Journal of polymer science. Part A, Polymer chemistry (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo

• 2 (literal)

Note

• Scopu (literal)
• ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

• Leone G, Bertini F, Canetti M, Boggioni L, Tritto I - CNR ISMAC-Milano; Conzatti L - ISMAC-Genova (literal)

Titolo

• Long-Lived Layered Silicates-immobilized 2,6-Bis(Imino)pyridyl Iron (II) Catalysts for Hybrid Polyethylene Nanocomposites by In Situ Polymerization: Effect of Aryl Ligand and Silicate Modification (literal)

Abstract

• Heterogeneous-layered silicate-immobilized 2,6-bis(imino)pyridyl iron (H) dichloride/MDAO catalysts, in which the active polymerization species are intercalated within sodium- and organomodified-layered silicate galleries, were prepared for producing hybrid exfoliated polyethylene (PE) nanocomposites by means of in Situ polymerization. The inorganic filler was first treated with modified-methylaluminoxane (MMAO) to produce a supported cocatalyst: MMAO reacts with silicates replacing most of the organic surfactant, thus modifying the original crystallographic clay order. MMAO anchored to the nanoclay was able to activate polymerization iron complexes initiating the polymer growth directly from the filler lamellae interlayer. The polymerization mechanism taking place in between the montmorillonite lamellae separates the layers, thus promoting deagglomeration and effective clay dispersion. Transmission electron microscopy revealed that in situ polymerization by catalytically active iron complexes intercalated within the lower organomodified clay led to fine dispersion and high exfoliation extent. The intercalated clay catalysts displayed a longer polymerization life-time and brought about ethylene polymerization more efficiently than analogous homogeneous systems. PEs having higher molecular masses were obtained. These benefits resulted to be dependent more on the filler nature than on the ligand environment around the iron metal center and the experimental synthetic route. (literal)

Prodotto di

• Istituto per lo studio delle macromolecole (ISMAC) (Istituto)
• Progettazione e sviluppo di materiali polimerici multifasici micro e nanostrutturati (PM.P02.005.004) (Modulo)
• Sintesi e Caratterizzazione di Omo-e copolimeri Elastomerici a base Butadienica per Applicazioni nel Settore della Produzione di Pneumatici (PM.P02.005.008) (Modulo)
• Catalisi per nuove architetture macromolecolari e sistemi polimerici nanostrutturati e biomimetici (PM.P02.005.003) (Modulo)

Autore CNR

• FABIO BERTINI (Unità di personale interno)
• MAURIZIO CANETTI (Unità di personale interno)
• LUCIA CONZATTI (Unità di personale interno)
• LAURA BOGGIONI (Persona)
• GIUSEPPE LEONE (Persona)
• INCORONATA TRITTO (Persona)

Insieme di parole chiave

• Keywords of "Long-Lived Layered Silicates-immobilized 2,6-Bis(Imino)pyridyl Iron (II) Catalysts for Hybrid Polyethylene Nanocomposites by In Situ Polymerization: Effect of Aryl Ligand and Silicate Modification" (Insieme di parole chiave)

Incoming links:

Autore CNR di

• LAURA BOGGIONI (Persona)
• FABIO BERTINI (Unità di personale interno)
• MAURIZIO CANETTI (Unità di personale interno)
• LUCIA CONZATTI (Unità di personale interno)
• INCORONATA TRITTO (Persona)
• GIUSEPPE LEONE (Persona)

Prodotto

• Istituto per lo studio delle macromolecole (ISMAC) (Istituto)
• Catalisi per nuove architetture macromolecolari e sistemi polimerici nanostrutturati e biomimetici (PM.P02.005.003) (Modulo)
• Sintesi e Caratterizzazione di Omo-e copolimeri Elastomerici a base Butadienica per Applicazioni nel Settore della Produzione di Pneumatici (PM.P02.005.008) (Modulo)
• Progettazione e sviluppo di materiali polimerici multifasici micro e nanostrutturati (PM.P02.005.004) (Modulo)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#rivistaDi

• Journal of polymer science. Part A, Polymer chemistry (Rivista)

Insieme di parole chiave di

• Keywords of "Long-Lived Layered Silicates-immobilized 2,6-Bis(Imino)pyridyl Iron (II) Catalysts for Hybrid Polyethylene Nanocomposites by In Situ Polymerization: Effect of Aryl Ligand and Silicate Modification" (Insieme di parole chiave)