The PLP-SEC Method: Perspectives and Limitations
| Autor: | Michael Buback, Patrick Drawe |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Pulse (signal processing) Radical Organic Chemistry Radical polymerization Analytical chemistry 02 engineering and technology Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences 0104 chemical sciences Inorganic Chemistry chemistry.chemical_compound Monomer chemistry Polymerization Ionization Polymer chemistry Materials Chemistry 0210 nano-technology Photoinitiator |
| Zdroj: | Macromolecular Theory and Simulations. 25:74-84 |
| ISSN: | 1022-1344 |
| DOI: | 10.1002/mats.201500048 |
| Popis: | Pulsed-laser polymerization (PLP) in conjunction with polymer analysis by size-exclusion chromatography (SEC) is the IUPAC-recommended method for measuring propagation rate coefficients, kp, of radical polymerization. Pulse repetition rate, vrep, and photoinitiator concentration need to be adjusted to the termination rate of the monomer, preferably via the quantity β, the fraction of radicals terminating prior to applying the successive laser pulse. By PREDICI simulation, the prerequisites for successful PLP-SEC work are demonstrated. Slow termination, as with fully ionized monomers, is specifically addressed. Both very high and very low vrep are not suitable for accurate kp measurements. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text