The PLP‐SEC Method: Perspectives and Limitations | Zendy

Drawe Patrick | Zendy; Buback Michael | Zendy

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The PLP‐SEC Method: Perspectives and Limitations

Author(s) -

Drawe Patrick,

Buback Michael

Publication year - 2016

Publication title -

macromolecular theory and simulations

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.37

H-Index - 56

eISSN - 1521-3919

pISSN - 1022-1344

DOI - 10.1002/mats.201500048

Subject(s) - monomer , photoinitiator , polymerization , radical , chemistry , laser , ionization , radical polymerization , polymer , repetition (rhetorical device) , work (physics) , fraction (chemistry) , analytical chemistry (journal) , polymer chemistry , materials science , chromatography , organic chemistry , thermodynamics , optics , ion , physics , linguistics , philosophy

Pulsed‐laser polymerization (PLP) in conjunction with polymer analysis by size‐exclusion chromatography (SEC) is the IUPAC‐recommended method for measuring propagation rate coefficients, k p , of radical polymerization. Pulse repetition rate, v rep , 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 v rep are not suitable for accurate k p measurements.

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