IUPAC recommended experimental methods and data evaluation procedures for the determination of radical copolymerization reactivity ratios from composition data

The IUPAC working group on "Experimental Methods and Data Evaluation Procedures for the Determination of Radical Copolymerization Reactivity Ratios" recommends a robust method to determine reactivity ratios from copolymer composition data using the terminal model for copolymerization. The...

Full description

Saved in:
Bibliographic Details
Published in:Polymer chemistry 2024-05, Vol.15 (18), p.1851-1861
Main Authors: Autzen, Anton A. A, Beuermann, Sabine, Drache, Marco, Fellows, Christopher M, Harrisson, Simon, van Herk, Alex M, Hutchinson, Robin A, Kajiwara, Atsushi, Keddie, Daniel J, Klumperman, Bert, Russell, Gregory T
Format: Article
Language:English
Subjects:
Chemical Sciences
Composition
Confidence intervals
Copolymerization
Copolymers
Experimental methods
Parameter estimation
Polymers
Ratios
Research methodology
Systematic errors
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The IUPAC working group on "Experimental Methods and Data Evaluation Procedures for the Determination of Radical Copolymerization Reactivity Ratios" recommends a robust method to determine reactivity ratios from copolymer composition data using the terminal model for copolymerization. The method is based on measuring conversion ( X ) and copolymer composition ( F ) of three or more copolymerization reactions at different initial monomer compositions ( f 0 ). Both low and high conversion experiments can be combined, or alternatively only low conversion experiments can be used. The method provides parameter estimates, but can also reveal deviations from the terminal model and the presence of systematic errors in the measurements. Special attention is given to error estimation in F and construction of the joint confidence interval for reactivity ratios. Previous experiments measuring f 0 − F or f − X can also be analyzed with the IUPAC recommended method. The influence of systematic errors in the measurements on the reactivity ratio determinations is investigated, including ways to identify and mitigate such errors. The IUPAC method uses monomer composition, conversion, and copolymer composition to find reactivity ratios. Shown the optimal reactivity ratios in red and a 95% Confidence Interval in blue.
ISSN:1759-9954
1759-9962
DOI:10.1039/d4py00270a