Radical Propagation Kinetics ofN-Vinylpyrrolidone in Organic Solvents Studied by Pulsed-Laser Polymerization-Size-Exclusion Chromatography (PLP-SEC)

2014 ◽  
Vol 215 (23) ◽  
pp. 2327-2336 ◽  
Author(s):  
Lucia Uhelská ◽  
Dušan Chorvát ◽  
Robin A. Hutchinson ◽  
Sandhya Santanakrishnan ◽  
Michael Buback ◽  
...  

2015 ◽  
Vol 216 (2) ◽  
pp. 235-235
Author(s):  
Lucia Uhelská ◽  
Dušan Chorvát ◽  
Robin A. Hutchinson ◽  
Sandhya Santanakrishnan ◽  
Michael Buback ◽  
...  


2016 ◽  
Vol 7 (26) ◽  
pp. 4342-4351 ◽  
Author(s):  
Katrin B. Kockler ◽  
Friederike Fleischhaker ◽  
Christopher Barner-Kowollik

The Mark–Houwink–Kuhn–Sakurada parameters as well as Arrhenius parameters of the propagation rate coefficient for a new group of nitrogen-containing methacrylates were determined via triple detector SEC and pulsed laser polymerization–size exclusion chromatography, respectively.



2005 ◽  
Vol 38 (14) ◽  
pp. 5944-5954 ◽  
Author(s):  
Zachary Szablan ◽  
Martina H. Stenzel ◽  
Thomas P. Davis ◽  
Leonie Barner ◽  
Christopher Barner-Kowollik


2003 ◽  
Vol 75 (8) ◽  
pp. 1091-1096 ◽  
Author(s):  
Sabine Beuermann

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.



e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Thomas Junkers ◽  
Dominik Voll ◽  
Christopher Barner-Kowollik

AbstractNew data on the propagation rate coefficient, kp, of vinyl acetate (VAc) are obtained via the IUPAC recommended method of pulsed laser polymerization - size exclusion chromatography (PLP-SEC) operated at 500 Hz laser repetition rate. An apparent dependency of the experiment’s outcome on the laser pulsing rate is identified with kp being about 25 % larger at 500 Hz compared to 100 Hz. The temperature dependence of kp was determined to fit ln kp = 17.12 - 2621 K/T; data is in generally good agreement with literature values when the previous underestimation of kp by 100 Hz laser pulsing experiments is taken into account.





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