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Determining Initiator Efficiency in Radical Polymerization by Electrospray‐Ionization Mass Spectrometry
Author(s) -
Buback Michael,
Frauendorf Holm,
Günzler Fabian,
Huff Felix,
Vana Philipp
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200900237
Subject(s) - polymerization , radical polymerization , chemistry , methyl methacrylate , mass spectrometry , polymer , electrospray ionization , electrospray , polymer chemistry , radical initiator , bulk polymerization , chromatography , organic chemistry
A method for measuring initiator efficiency in radical polymerization using ESI‐MS is presented. The method is based on the evaluation of relative MS peak intensities of polymer that has been initiated by a mixture of initiators, of which one serves as an internal reference. The method is quickly and easily performed and was found to be reproducible and robust. In polymerization of methyl methacrylate in solution, the efficiency of BTMHP at 80 °C was determined to be f BTMHP = 0.57 ± 0.08, and the efficiency of DBPO at 100 °C was measured to be f DBPO = 0.89 ± 0.08.