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Please use this identifier to cite or link to this item: http://hdl.handle.net/1942/26286

Title: Organocatalyzed Photo-Atom Transfer Radical Polymerization of Methacrylic Acid in Continuous Flow and Surface Grafting
Authors: Ramakers, Gijs
Krivcov, Alexander
Trouillet, Vanessa
Welle, Alexander
Moebius, Hildegard
Junkers, Tanja
Issue Date: 2017
Abstract: The organocatalyzed photo-atom transfer radical polymerization (photoATRP) using 10-phenylphenothiazine as catalyst is studied toward its use in methacrylic acid (MAA) polymerization and surface grafting. The organocatalyzed photoATRP of methyl methacrylate (MMA) is first optimized for continuous flow synthesis in order to assess the livingness of the polymerization. MMA can be polymerized in batch and in flow; however, conversions are limited by the loss of bromine functionality and hence high conversions have to be traded in with increasing dispersities. Also, MAA is polymerized successfully in continuous flow with similar limitations. Flow conditions are transferred to surface grafting from silanized silicon wafers. The presence of ATRP initiators after silanization is confirmed by secondary ion mass spectrometry and X-ray photoelectron spectroscopy. Dense polymethacrylic acid brush films are successfully produced, which is not directly accessible via classical copper-mediated ATRP techniques.
Notes: [Ramakers, Gijs; Junkers, Tanja] Univ Hasselt, Inst Mat Res IMO, Polymer React Design Grp, Martelarenlaan 42, B-3500 Hasselt, Belgium. [Krivcov, Alexander; Moebius, Hildegard] Univ Appl Sci Kaiserslautern, Amerikastr 1, D-66482 Zweibrucken, Germany. [Trouillet, Vanessa] Karlsruhe Inst Technol, Inst Appl Mat, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany. [Trouillet, Vanessa; Welle, Alexander] Karlsruhe Nano Micro Facil, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany. [Welle, Alexander] Karlsruhe Inst Technol, Inst Funct Interfaces, Hermann von Helmholtz Pl 1, D-76344 Eggenstein Leopoldshafen, Germany. [Junkers, Tanja] IMEC Div IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium.
URI: http://hdl.handle.net/1942/26286
DOI: 10.1002/marc.201700423
ISI #: 000414404500005
ISSN: 1022-1336
Category: A1
Type: Journal Contribution
Appears in Collections: Research publications

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