Free Radical Polymerization of Styrene:  Mass Spectrometric Identification of the First 15 Nitroxide-Trapped Oligomers and Estimated Propagation Rate Coefficients

2002 ◽  
Vol 35 (19) ◽  
pp. 7232-7237 ◽  
Author(s):  
Per B. Zetterlund ◽  
W. Ken Busfield ◽  
Ian D. Jenkins
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Propagation Rate ◽  
Mass Spectrometric ◽  
Rate Coefficients ◽  
Spectrometric Identification ◽  
Mass Spectrometric Identification

Critically evaluated rate coefficients for free-radical polymerization, 2.. Propagation rate coefficients for methyl methacrylate

1997 ◽  
Vol 198 (5) ◽  
pp. 1545-1560 ◽  
Author(s):  
Sabine Beuermann ◽  
Michael Buback ◽  
Thomas P. Davis ◽  
Robert G. Gilbert ◽  
Robin A. Hutchinson ◽  
...  
Keyword(s):  
Free Radical ◽  
Methyl Methacrylate ◽  
Radical Polymerization ◽  
Free Radical Polymerization ◽  
Propagation Rate ◽  
Rate Coefficients

scholarly journals Critically evaluated rate coefficients for free-radical polymerization, 1. Propagation rate coefficient for styrene

1995 ◽  
Vol 196 (10) ◽  
pp. 3267-3280 ◽  
Author(s):  
Michael Buback ◽  
Robert G. Gilbert ◽  
Robin A. Hutchinson ◽  
Bert Klumperman ◽  
Frank-Dieter Kuchta ◽  
...  
Keyword(s):  
Free Radical ◽  
Radical Polymerization ◽  
Rate Coefficient ◽  
Free Radical Polymerization ◽  
Propagation Rate ◽  
Rate Coefficients ◽  
Propagation Rate Coefficient

Critically evaluated rate coefficients for free-radical polymerization Part 6: Propagation rate coefficient of methacrylic acid in aqueous solution (IUPAC Technical Report)

2007 ◽  
Vol 79 (8) ◽  
pp. 1463-1469 ◽  
Author(s):  
Sabine Beuermann ◽  
Michael Buback ◽  
Pascal Hesse ◽  
Frank-Dieter Kuchta ◽  
Igor Lacík ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Free Radical ◽  
Radical Polymerization ◽  
Methacrylic Acid ◽  
Free Radical Polymerization ◽  
Direct Analysis ◽  
Propagation Rate ◽  
Bulk Polymerization ◽  
Size Exclusion ◽  
Rate Coefficients

Critically evaluated propagation rate coefficients, kp, for free-radical polymerization of methacrylic acid, MAA, in aqueous solution are presented. The underlying kp values are from two independent sources, which both used the IUPAC-recommended technique of pulsed-laser-initiated polymerization (PLP) in conjunction with molar mass distribution (MMD) analysis of the resulting polymer by size-exclusion chromatography (SEC). Different methods of measuring the MMD of the poly(MAA) samples have, however, been used: (i) direct analysis via aqueous-phase SEC and (ii) standard SEC with tetrahydrofuran as the eluent carried out on poly(methyl methacrylate) samples obtained by methylation of the poly(MAA) samples from PLP. Benchmark kp values for aqueous solutions containing 15 mass % MAA are presented for temperatures between 18 and 89 °C. The Arrhenius pre-exponential and activation energy of kp at 15 mass % MAA are 1.54 × 106 L mol-1 s-1 and 15.0 kJ mol-1, respectively. Also reported are critically evaluated kp values for 25 °C over the entire MAA concentration range from dilute aqueous solution to bulk polymerization.

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