| 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
Grafting thermoresponsive polymers onto honeycomb structured porous films using the RAFT process
Abstract
Honeycomb structured porous polymer films were grafted with a thermo-responsive polymer poly(N-isopropylacrylamide) (PNIPAAm) using reversible addition fragmentation chain transfer polymerization (RAFT) under γ-irradiation in the presence of an additional RAFT agent (S,S-bis(α,α′-dimethyl-α″-acetic acid)trithiocarbonate) in solution. The honeycomb structured porous films were successfully prepared from different RAFT group containing polymers (a polystyrene comb and a random copolymer composed of styrene and 2-hydroxyethylmethacrylate PS-ran-PHEMA synthesized in the presence of trithiocarbonates) and from PS-ran-PHEMA obtained via free radical polymerization as a control experiment. Atomic force microscopy (AFM), confocal fluorescent microscopy and contact angle measurements confirm the presence of PNIPAAm chains on RAFT containing polymers while grafted chains were absent in films without any thiocarbonylthio functionality. Microscopy studies (AFM and confocal fluorescent) reveal the presence of PNIPAAm chains primarily inside the pores, clogging the pores in the hydrated state. AFM studies in conjunction with wettability studies confirm the influence of the NIPAAm/RAFT agent ratio in solution with the contact angle decreasing with increasing molecular weight of the attached PNIPAAm chain. The PNIPAAm grafted films were employed to study the cell attachment of fibroblast cells showing that increasing hydrophilicity is beneficial for honeycomb structured porous films to enhance the interaction between the surface and the cells. © 2008 The Royal Society of Chemistry.