Statistical Ring Opening Metathesis Copolymerization of Norbornene and Cyclopentene by Grubbs’ 1st-Generation CatalystReport as inadecuate




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1

Industrial Chemistry Laboratory, Department of Chemistry, University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece

2

Inorganic Chemistry Laboratory, Department of Chemistry, University of Athens, Panepistimiopolis Zografou, Athens 15771, Greece





*

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Academic Editor: Georgios C. Vougioukalakis

Abstract Statistical copolymers of norbornene NBE with cyclopentene CP were prepared by ring-opening metathesis polymerization, employing the 1st-generation Grubbs’ catalyst, in the presence or absence of triphenylphosphine, PPh3. The reactivity ratios were estimated using the Finemann-Ross, inverted Finemann-Ross, and Kelen-Tüdos graphical methods, along with the computer program COPOINT, which evaluates the parameters of binary copolymerizations from comonomer-copolymer composition data by integrating a given copolymerization equation in its differential form. Structural parameters of the copolymers were obtained by calculating the dyad sequence fractions and the mean sequence length, which were derived using the monomer reactivity ratios. The kinetics of thermal decomposition of the copolymers along with the respective homopolymers was studied by thermogravimetric analysis within the framework of the Ozawa-Flynn-Wall and Kissinger methodologies. Finally, the effect of triphenylphosphine on the kinetics of copolymerization, the reactivity ratios, and the kinetics of thermal decomposition were examined. View Full-Text

Keywords: Ring Opening Metathesis Polymerization ROMP; norbornene; cyclopentene; copolymerization; thermogravimetric analysis TGA Ring Opening Metathesis Polymerization ROMP; norbornene; cyclopentene; copolymerization; thermogravimetric analysis TGA





Author: Christiana Nikovia 1, Andreas-Philippos Maroudas 1, Panagiotis Goulis 1, Dionysios Tzimis 1, Patrina Paraskevopoulou 2 and Marinos Pitsikalis 1,*

Source: http://mdpi.com/



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