Statistical Ring Opening Metathesis Copolymerization of Norbornene and Cyclopentene by Grubbs' 1st-Generation Catalyst

Scientific publication - Journal Article uoadl:2928875 1 Read counter

Unit:
Department of Chemistry
Title:
Statistical Ring Opening Metathesis Copolymerization of Norbornene and Cyclopentene by Grubbs' 1st-Generation Catalyst
Languages of Item:
English
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-Tudos 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.
Publication year:
2015
Authors:
Christiana Nikovia
Andreas-Philippos Maroudas
Panagiotis Goulis
Dionysios Tzimis
Patrina Paraskevopoulou
Marinos Pitsikalis
Journal:
Molecules
Publisher:
MDPI AG
Volume:
20
Number:
9
Pages:
15597--15615
Keywords:
Ring Opening Metathesis Polymerization (ROMP); norbornene; cyclopentene;
copolymerization; thermogravimetric analysis (TGA)
Main subject category:
Science
Official URL (Publisher):
DOI:
10.3390/molecules200915597
The digital material of the item is not available.