Application of Matrix-Assisted Laser Desorption Ionization Time-of-Flight Mass Spectrometry in Pulsed Laser Polymerization. Chain-Length-Dependent Propagation Rate Coefficients at High Molecular Weight:  An Artifact Caused by Band Broadening in Size Exclusion Chromatography?

2003 ◽  
Vol 36 (26) ◽  
pp. 9797-9803 ◽  
Author(s):  
Robin X. E. Willemse ◽  
Bastiaan B. P. Staal ◽  
Alex M. van Herk ◽  
Sebastiaan C. J. Pierik ◽  
Bert Klumperman
Keyword(s):  
Pulsed Laser ◽  
Propagation Rate ◽  
Size Exclusion ◽  
Rate Coefficients ◽  
Laser Desorption Ionization ◽  
Band Broadening ◽  
Ionization Time ◽  
Flight Mass Spectrometry ◽  
Exclusion Chromatography ◽  
Polymerization Chain

Critically evaluated propagation rate coefficients in free-radical polymerizations: Part III. Methacrylates with cyclic ester groups (IUPAC Technical Report)

2003 ◽  
Vol 75 (8) ◽  
pp. 1091-1096 ◽  
Author(s):  
Sabine Beuermann
Keyword(s):  
Free Radical ◽  
Size Exclusion Chromatography ◽  
Ambient Pressure ◽  
Pulsed Laser ◽  
Propagation Rate ◽  
Size Exclusion ◽  
Rate Coefficients ◽  
Arrhenius Relation ◽  
Technical Report ◽  
Exclusion Chromatography

Propagation rate coefficients, kp, as a function of temperature, are reported for bulk free-radical homopolymerizations of oxiranylmethyl, cyclohexyl, and benzyl methacrylate at ambient pressure and low conversion. The data were obtained from experiments combining pulsed-laser initiated polymerization and size-exclusion chromatography. The data determined from experiments carried out in independent laboratories obey the consistency criteria established for this technique. The rate coefficients for the three monomers are well represented by a single Arrhenius relation.

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