| People | Locations | Statistics |
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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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Stenzel, Martina
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (11/11 displayed)
- 2016Polymer functional nanodiamonds by light-induced ligationcitations
- 2009Formation efficiency of ABA blockcopolymers via enhanced spin capturing polymerization (ESCP): Locating the alkoxyamine functioncitations
- 2008Grafting thermoresponsive polymers onto honeycomb structured porous films using the RAFT processcitations
- 2008Graft block copolymers of propargyl methacrylate and vinyl acetate via a combination of RAFT/MADIX and click chemistry: Reaction analysiscitations
- 2007The Use of Novel F-RAFT Agents in High Temperature and High Pressure Ethene Polymerization: Can Control be Achieved?citations
- 2007Verification of Controlled Grafting of Styrene from Cellulose via Radiation-Induced RAFT Polymerizationcitations
- 2007Honeycomb structured porous films from amphiphilic block copolymers prepared via RAFT polymerizationcitations
- 2007Shell-cross-linked micelles containing cationic polymers synthesized via the RAFT process: toward a more biocompatible gene delivery systemcitations
- 2006Gold-loaded organic/inorganic nanocomposite honeycomb membranescitations
- 2006Effect of an added base on (4-cyanopentanoic acid)-4-dithiobenzoate mediated RAFT polymerization in watercitations
- 2006Water-assisted formation of honeycomb structured porous filmscitations
Places of action
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article
Effect of an added base on (4-cyanopentanoic acid)-4-dithiobenzoate mediated RAFT polymerization in water
Abstract
The effect of an added base on the aqueous reversible addition- fragmentation chain transfer polymerization of a methacrylic glycomonomer with (4-cyanopentanoic acid)-4-dithiobenzoate was investigated. When sodium carbonate or sodium bicarbonate were used to dissolve the RAFT agent in aqueous solution at room temperature, an inhibition period of 60-90 min was observed at the beginning of the polymerization together with a marked decrease in the overall polymerization rate. Also, experimental Mn values were much higher than the calculated ones in both cases. When sodium carbonate was used, control over the polymerization process was lost within 43% conversion. Better results were obtained with sodium bicarbonate, in which case the molecular weight distribution remained narrow and unimodal up to 81% conversion. At that point, a higher molecular weight shoulder developed that kept growing in intensity at the proceeding of the reaction. Dramatically improved results were obtained by adding circa 10% ethanol to the polymerization mixture to facilitate the dissolution of (4-cyanopentanoic acid)-4-dithiobenzoate. Following this protocol, narrow polydispersity poly(methyl 6-O-methacryloyl-α-d- glucoside) was obtained possessing a molecular weight close to the predicted value.