| 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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Priola, A.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (9/9 displayed)
- 2008Preparation of polymer-based composite with magnetic anisotropy by oriented carbon nanotube dispersioncitations
- 2008Use of single-walled carbon nanotubes as reinforcing fillers in UV-curable epoxy systemscitations
- 2005Hybrid nanocomposites containing silica and PEO segments: preparation through dual-curing process and characterizationcitations
- 2005Poly(caprolactone-co-lactide)/perfluoropolyether block copolymers: Synthesis, thermal, and surface characterizationcitations
- 2005Preparation and characterization of hybrid nanocomposite coatings by photopolymerization and sol-gel processcitations
- 2004Synthesis and Cationic Photopolymerization of New Silicon-Containing Oxetane Monomerscitations
- 2003Hyperbranched Polymers in Cationic Photopolymerization of Epoxy Systemscitations
- 2000Acrylic polyester resins containing perfluoropolyethers structures: Synthesis, characterization, and photopolymerization
- 2000Composites based on carbon fibers and liquid crystalline epoxy resins, 2: Dynamic-mechanical analysis and fracture toughness behavior
Places of action
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article
Hyperbranched Polymers in Cationic Photopolymerization of Epoxy Systems
Abstract
<p>Mixtures of epoxy resins in the presence of epoxy hyperbranched polymers (HBP), in the range of 5-15 wt%, were investigated in the cationic photocuring process. No significant differences in rate of polymerization or final epoxy groups conversion were observed. At low concentration, HBP acts as plasticizer and causes a decrease of the glass transition temperature of the epoxy matrix and of the E' value. At higher concentration (about 15 wt%), two T<sub>g</sub> values are evident, indicating a biphasic structure of the system. The SEM analysis of the fracture surface of the samples confirms a particulate structure with separate HBP domains interconnected to the epoxy matrix. In all the samples investigated, a clear increase of the impact resistance was observed, resulting either from the plasticization effect or from the particulate structure induced by the presence of the HBP resin.</p>