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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Farmer, Brandon
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Publications (10/10 displayed)
- 2021POSS-enhanced colorless organic/inorganic nanocomposite (CORIN®) for atomic oxygen resistance in low earth orbitcitations
- 2017Method of aerogel synthesis
- 2014Large-aperture fast multilevel Fresnel zone lenses in glass and ultrathin polymer films for visible and near-infrared imaging applicationscitations
- 2011Polymeric coating for the protection of objects
- 2011Polymeric coating for protecting objects
- 2011Solar panel with polymeric cover
- 2009Color-matched polymer materials and method for forming the same
- 2007Anionic synthesis of epoxy end-capped polymerscitations
- 2004Novel resin modified glass-ionomer cements with improved flexural strength and ease of handlingcitations
- 200331P and 1H NMR studies of the transesterification polymerization of polyphosphonate oligomerscitations
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article
Anionic synthesis of epoxy end-capped polymers
Abstract
The reaction of living anions of polystyrene (PS) or poly(methyl methacrylate) (PMMA) with epibromohydrin for the synthesis of well-defined epoxy end-functionalized polymers is reported. Polyanions were reacted with an excess of epibromohydrin in tetrahydrofuran (THF) at -78°C. The functionalities of the resulting polymers were analyzed by matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-TOF MS), NMR, and size exclusion chromatography (SEC). The epoxy end groups were reacted with 1,1-diphenyl- hexyllithium, and MALDI-TOF MS and NMR before and after this chemical modification were used to determine the presence of the epoxy end groups. The presence of the epoxy end group was confirmed by anionically polymerizing ethylene oxide from these epoxy end group. The formation of a block copolymer due to the epoxy end groups was proved by SEC analysis. The combined MALDI-TOF MS, 1 H NMR, and SEC results indicate that epoxy end-capped PS was obtained in quantitative yield. The method was extended to the synthesis of epoxy end-capped PMMA. With this polymer the extent of end-functionalization was high but not quantitative, with non-dimeric byproducts detected by MALDI-TOF MS.