A simple method for the counting and structural elucidation of the different active sites in an olefin polymn. catalyst system is introduced, based on a reaction quench by O2 under controlled kinetics, followed by NMR anal. of the OH-labeled chain end-groups formed upon acidic work-up of the polymer. The method is successfully benchmarked using a mol. bis(phenoxyamino)Zr(IV)-based catalyst characterized by a comparatively long-lasting controlled kinetic transient at room temp.
Identification and Count of the Active Sites in Olefin Polymerization Catalysis by Oxygen Quench / Cipullo, Roberta; Mellino, S; Busico, Vincenzo. - In: MACROMOLECULAR CHEMISTRY AND PHYSICS. - ISSN 1022-1352. - 215:(2014), pp. 1728-1734. [10.1002/macp.201400156]
Identification and Count of the Active Sites in Olefin Polymerization Catalysis by Oxygen Quench
CIPULLO, ROBERTA;BUSICO, VINCENZO
2014
Abstract
A simple method for the counting and structural elucidation of the different active sites in an olefin polymn. catalyst system is introduced, based on a reaction quench by O2 under controlled kinetics, followed by NMR anal. of the OH-labeled chain end-groups formed upon acidic work-up of the polymer. The method is successfully benchmarked using a mol. bis(phenoxyamino)Zr(IV)-based catalyst characterized by a comparatively long-lasting controlled kinetic transient at room temp.| File | Dimensione | Formato | |
|---|---|---|---|
|
2014-Oxygen quench_Macromolecular_Chemistry_and_Physics.pdf
solo utenti autorizzati
Tipologia:
Documento in Post-print
Licenza:
Accesso privato/ristretto
Dimensione
926.56 kB
Formato
Adobe PDF
|
926.56 kB | Adobe PDF | Visualizza/Apri Richiedi una copia |
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
