| 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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Degée, Philippe
University of Namur
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (39/39 displayed)
- 2011Novel polyesteramide-based di- and triblock copolymerscitations
- 2008Undecyl tin chloride grafted onto cross-linked polystyrene: an efficient catalyst for ring-opening polymerization of e-caprolactonecitations
- 2008CH-p interactions as the driving force for silicone-based nanocomposites with exceptional rheological and thermal propertiescitations
- 2008Controlled synthesis of amphiphilic block copolymers based on polyester and poly(amino methacrylate): comprehensive study of reaction mechanismscitations
- 2008Controlled synthesis of amphiphilic block copolymers based on polyester and poly(amino methacrylate)citations
- 2008Designing polylactide/clay nanocomposites for textile applicationscitations
- 2008Undecyltin trichloride grafted onto cross-linked polystyrenecitations
- 2008CH-π interactions as the driving force for silicone-based nanocomposites with exceptional propertiescitations
- 2007Polylactide compositions: I. Effect of filler content and size on mechanical properties of PLA/calcium sulfate compositescitations
- 2007(Plasticized) Polylactide/clay nanocomposite textilecitations
- 2007Polylactide compositions. Part 1citations
- 2007Copolymerization of vinyl acetate and 1-octene and ethylene by cobalt-mediated radical polymerization (CMRP)citations
- 2007Catalytic properties of cross-linked polystyrene grafted diorganotins in a model transesterification and the ring-opening polymerization of e-caprolactonecitations
- 2007(Plasticized) polylactide/clay nanocomposite textile : thermal, mechanical, shrinkage and fire propertiescitations
- 2007Copolymerization of vinyl acetate with 1-octene and ethylene by cobalt-mediated radical polymerizationcitations
- 2006Synthesis of silicone-methacrylate copolymers by ATRP using a nickel-based supported catalystcitations
- 2006Synthesis of silicone-methacrylate copolymers by ATRP using a nickel-based supported catalystcitations
- 2006Copper-based supported catalysts for ATRP of methyl methacrylate: how can activity and control be tuned up?citations
- 2006Copper-based supported catalysts for the atom transfer radical polymerization of methyl methacrylatecitations
- 2005Nickel-based supported ATRP of methyl methacrylate using crosslinked polystyrene-triphenylphosphine as ligandcitations
- 2005Polylactide/montmorillonite nanocompositescitations
- 2005(Plasticized) polylactide/organoclay nanocomposites by in situ intercalative polymerizationcitations
- 2005(Plasticized) polylactide/(organo-)clay nanocomposites by in situ intercalative polymerizationcitations
- 2005Nickel-catalyzed supported ATRP of methyl methacrylate using cross-linked polystyrene triphenylphosphine as ligandcitations
- 2005Polylactide/montmorillonite nanocomposites : study of the hydrolytic degradationcitations
- 2004End-grained wood-polyurethane composites, 1 synthesis, morphology and characterizationcitations
- 2004Synthesis of melt-stable and semi-crystalline poly(1,4-dioxan-2-one) by ring-opening (co)polymerisation of 1,4-dioxan-2-one with different lactonescitations
- 2004Supported nickel bromide catalyst for Atom Transfer Radical Polymerization (ATRP) of methyl methacrylatecitations
- 2004Diblock copolymers based on 1,4-dioxan-2-one and ε-caprolactonecitations
- 2003Intercalative polymerization of cyclic esters in layered silicatescitations
- 2003New nanocomposite materials based on plasticized poly(L-lactide) and organo-modified montmorillonites: thermal and morphological studycitations
- 2003Biodegradation of poly(ε-caprolactone)/starch blends and composites in composting and culture environmentscitations
- 2003Exfoliated polylactide/clay nanocomposites by in-situ coordination-insertion polymerizationcitations
- 2002New nanocomposite materials based on plasticized poly(L-lactide) and organo-modified montmorillonitescitations
- 2001Poly(ϵ-caprolactone) layered silicate nanocompositescitations
- 2001Poly(e-caprolactone) layered silicate nanocomposites: effect of clay surface modifiers on the melt intercalation process
- 2001Some thermodynamic, kinetic, and mechanistic aspects of the ring-opening polymerization of 1,4-dioxan-2-one initiated by Al(OiPr)3 in bulkcitations
- 2001Mechanisms and kinetics of thermal degradation of poly(ε-caprolactone)citations
- 2000New developments on the ring opening polymerisation of polylactidecitations
Places of action
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article
Synthesis of melt-stable and semi-crystalline poly(1,4-dioxan-2-one) by ring-opening (co)polymerisation of 1,4-dioxan-2-one with different lactones
Abstract
<p>High molecular weight poly(1,4-dioxan-2-one) (PPDX) can be readily synthesized by catalysed ring-opening polymerisation of 1,4-dioxan-2-one (PDX) using aluminium trialkoxide active species as initiator. Even though the resulting poly(ester-alt-ether) chains display good thermo-mechanical properties, they suffer from low thermal stability. PPDX is known to thermally degrade mainly through unzipping depolymerisation promoted from the hydroxyl end-groups and yielding PDX monomer. To overcome this drawback, chemical modification of the PPDX hydroxyl end-groups was first attempted with trichloroacetyl isocyanate; however, with limited success in terms of thermal stability. Interestingly, it has been shown that the copolymerisation of PDX with tiny amounts of lactones like ε-caprolactone (CL) and δ-valerolactone (VL), is an efficient way to enhance the thermal stability of the resulting polyester chains without significantly compromising the crystallinity and melting temperature of PPDX. The thermal stability of the resulting polyester chains was studied by isothermal TGA under inert atmosphere as well as under air. For instance, when PDX was copolymerised with a low amount of CL by initiation with Al(O<sup>i</sup>Pr)<sub>3</sub> at 100°C in bulk, a melt-stable copolymer was rapidly formed with a composition close to the starting feed and a multiblock-like structure as shown by <sup>1</sup>H and <sup>13</sup>C NMR spectroscopy. The incorporation of 3-15 wt% of CL into PPDX chains substantially increases the thermal stability of resulting PPDX-rich copolyesters, while preserving a high melting temperature ranging between 90 and 100°C. Furthermore, an interesting internal plasticising effect is also detected by DSC with the glass transition temperature decreasing from, e.g., -10 to -22°C in the presence of 14 wt% CL copolymerised in the PPDX chains.</p>