Free-Radical Propagation Rate Coefficient of Nonionized Methacrylic Acid in Aqueous Solution from Low Monomer Concentrations to Bulk Polymerization

2006 ◽  
Vol 39 (1) ◽  
pp. 184-193 ◽  
Author(s):  
Sabine Beuermann ◽  
Michael Buback ◽  
Pascal Hesse ◽  
Igor Lacík
Keyword(s):  
Aqueous Solution ◽  
Free Radical ◽  
Methacrylic Acid ◽  
Rate Coefficient ◽  
Propagation Rate ◽  
Bulk Polymerization ◽  
Propagation Rate Coefficient ◽  
Radical Propagation

Propagation Rate Coefficient of Free-Radical Polymerization of Partially and Fully Ionized Methacrylic Acid in Aqueous Solution

2009 ◽  
Vol 42 (20) ◽  
pp. 7753-7761 ◽  
Author(s):  
Igor Lacík ◽  
Lucia Učňová ◽  
Silvia Kukučková ◽  
Michael Buback ◽  
Pascal Hesse ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Free Radical ◽  
Radical Polymerization ◽  
Methacrylic Acid ◽  
Rate Coefficient ◽  
Free Radical Polymerization ◽  
Propagation Rate ◽  
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.

Determination of Free-Radical Propagation Rate Coefficient of N -Vinylindole by the Pulsed-Laser Polymerization Method

2004 ◽  
Vol 51 (5-6) ◽  
pp. 373-380 ◽  
Author(s):  
Masataka Ohoka ◽  
Hideo Ohkita ◽  
Shinzaburo Ito ◽  
Masahide Yamamoto
Keyword(s):  
Free Radical ◽  
Rate Coefficient ◽  
Pulsed Laser ◽  
Propagation Rate ◽  
Polymerization Method ◽  
Propagation Rate Coefficient ◽  
Radical Propagation ◽  
Pulsed Laser Polymerization

Propagation Rate Coefficient of Non-ionized Methacrylic Acid Radical Polymerization in Aqueous Solution. The Effect of Monomer Conversion

2007 ◽  
Vol 248 (1) ◽  
pp. 41-49 ◽  
Author(s):  
Sabine Beuermann ◽  
Michael Buback ◽  
Pascal Hesse ◽  
Silvia Kukučková ◽  
Igor Lacık
Keyword(s):  
Aqueous Solution ◽  
Radical Polymerization ◽  
Methacrylic Acid ◽  
Rate Coefficient ◽  
Monomer Conversion ◽  
Propagation Rate ◽  
Acid Radical ◽  
Propagation Rate Coefficient
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