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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/18106

Title: Solvent Effects on Acrylate k(p) in Organic Media?-A Systematic PLP-SEC Study
Authors: Haehnel, Alexander P.
WENN, Benjamin
Kockler, Katrin
Bantle, Tobias
Misske, Andrea M.
Fleischhaker, Friederike
Barner-Kowollik, Christopher
Issue Date: 2014
Citation: MACROMOLECULAR RAPID COMMUNICATIONS, 35 (23), p. 2029-2037
Abstract: The Arrhenius parameters of the propagation rate coefficient, k(p), are determined employing high-frequency pulsed laser polymerization-size exclusion chromatography (PLP-SEC) for the homologous series of five linear alkyl acrylates (i.e., methyl acrylate (MA), butyl acrylate (BA), dodecyl acrylate (DA), stearyl acrylate (SA), and behenyl acrylate (BeA)) in 1 M solution in butyl acetate (BuAc) as well as in toluene. The comparison of the obtained k(p) values with the literature known values for bulk demonstrates that no significant solvent influence neither in BuAc nor in toluene on the propagation reaction compared to bulk is detectable. Concomitantly, the k(p) values in toluene and in BuAc solution display a similar increase with increasing number of C-atoms in the ester side chain as was previously reported for the bulk systems. These findings are in clear contrast to earlier studies, which report a decrease of k(p) with increasing ester side chain length in toluene. The additional investigation of the longest and shortest ester side chain acrylate (i.e., BeA and MA) over the entire experimentally available concentration range at one temperature (i.e., 50 degrees C) does not reveal any general concentration dependence and all observed differences in the k(p) are within the experimental error.
Notes: [Haehnel, Alexander P.; Kockler, Katrin; Bantle, Tobias; Barner-Kowollik, Christopher] Karlsruhe Inst Technol, Inst Tech Chem & Polymerchem, D-76128 Karlsruhe, Germany. [Haehnel, Alexander P.; Kockler, Katrin; Bantle, Tobias; Barner-Kowollik, Christopher] Karlsruhe Inst Technol, Inst Biol Grenzflachen, D-76344 Eggenstein Leopoldshafen, Germany. [Wenn, Benjamin; Junkers, Thomas] Univ Hasselt, Inst Mat Res IMO IMOMEC, B-3590 Diepenbeek, Belgium. [Misske, Andrea M.; Fleischhaker, Friederike] BASF SE, D-67056 Ludwigshafen, Germany.
URI: http://hdl.handle.net/1942/18106
DOI: 10.1002/marc.201400479
ISI #: 000345977300008
ISSN: 1022-1336
Category: A1
Type: Journal Contribution
Validation: ecoom, 2016
Appears in Collections: Research publications

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