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Kinetic comparison of isomeric oligo(ethylene oxide) (meth)acrylates: Aqueous polymerization of oligo(ethylene oxide) methyl ether methacrylate and methyl 2-(oligo(ethylene oxide) methyl ether)acrylate macromonomers |
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| Authors: | Michael R Martinez Sylwia Dworakowska Adam Gorczyński Grzegorz Szczepaniak Ferdinando De Luca Bossa Krzysztof Matyjaszewski |
| Institution: | 1. Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA;2. Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA
Department of Biotechnology and Renewable Materials, Faculty of Chemical Engineering and Technology, Cracow University of Technology, Cracow, Poland;3. Department of Chemistry, Center for Macromolecular Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania, USA Faculty of Chemistry, Adam Mickiewicz University, Poznań, Poland |
| Abstract: | The photoinduced energy/electron transfer-reversible addition-fragmentation chain transfer (PET-RAFT) polymerizations of oligo(ethylene oxide) monomethyl ether methacrylate (OEOMA, also known as polyethylene glycol] methyl ether methacrylate, PEGMA) and isomeric methyl 2-(oligo(ethylene oxide) methyl ether)acrylate (2OEOAM) macromonomers with OEO average degree of polymerization of 22 or 45 were conducted in aqueous media to provide insight into the effect of monomer structure on grafting-through RAFT of 1,1-disubstituted acrylic macromonomers. The polymerizations of all four monomers reached nearly quantitative conversion. The longer macromonomers polymerized faster than the shorter ones within the same monomer class. The OEO side chain at the α (i.e., 2-) position of isomeric acrylates significantly slowed RAFT polymerization in comparison with OEO ester side chain of methacrylates. |
| Keywords: | bottlebrushes kinetics macromonomer methacrylate PET-RAFT |