Issue 13, 2022

Update and critical reanalysis of IUPAC benchmark propagation rate coefficient data

Abstract

We present an updated and expanded dataset of benchmark propagation rate coefficient (kp) data obtained from pulsed laser polymerization (PLP) of 13 vinyl monomers (styrene, methyl methacrylate, ethyl methacrylate, butyl methacrylate, dodecyl methacrylate, cyclohexyl methacrylate, glycidyl methacrylate, benzyl methacrylate, isobornyl methacrylate, butyl acrylate, methacrylic acid (15% aq. solution), methyl acrylate and vinyl acetate. The data are reanalyzed using a statistical model that takes into account systematic interlaboratory variation, leading to significantly larger joint confidence regions and slightly adjusted figures relative to the original IUPAC benchmark publications. A full set of revised IUPAC benchmark values of pre-exponential factors, activation energies (EA) and kp at 25 °C are presented. 81 independent PLP studies were pooled to give estimates of the standard interlaboratory error in measurements of ln(kp at 25 °C) and EA, which were obtained as 0.08 and 1.4 kJ mol−1, respectively, with a correlation coefficient of 0.04. We recommend that these values be used to estimate the uncertainty in PLP studies that have not been independently replicated.

Graphical abstract: Update and critical reanalysis of IUPAC benchmark propagation rate coefficient data

Supplementary files

Article information

Article type
Paper
Submitted
01 fev 2022
Accepted
04 mar 2022
First published
08 mar 2022

Polym. Chem., 2022,13, 1891-1900

Update and critical reanalysis of IUPAC benchmark propagation rate coefficient data

S. Beuermann, S. Harrisson, R. A. Hutchinson, T. Junkers and G. T. Russell, Polym. Chem., 2022, 13, 1891 DOI: 10.1039/D2PY00147K

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