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Part 3. General kinetic model of the sulfonation of PEEK fluoroarylketone chain‐end repeat unit
Author(s) -
Daoust D,
Devaux J,
Godard P
Publication year - 2001
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.719
Subject(s) - peek , kinetic energy , trimer , tetramer , polymer chemistry , thermodynamics , reaction rate constant , kinetics , work (physics) , chain (unit) , dimer , polymer , chemistry , materials science , polymer science , computational chemistry , organic chemistry , physics , quantum mechanics , astronomy , enzyme
The sulfonation kinetics of the fluoroarylketone chain‐end repeat unit of PEEK was studied. To achieve this objective, the sulfonation reactions of a trimer, a tetramer and a polymer, each fluoroarylketone ended, were followed by 19 F NMR. A general kinetic model was developed to determine the kinetic constants from 19 F NMR data. The reliability of the kinetic model and of its mathematical expression was ensured. The kinetic constants are then calculated and discussed. In particular, they were compared with the dimer rate constants previously determined. Lastly and as a conclusion of this work, a general kinetic model describing the sulfonation of main chain repeat units of PEEK is proposed. © 2001 Society of Chemical Industry