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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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Hadjichristidis, Nikos
European Commission
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Interpenetrated and Bridged Nanocylinders from Self-Assembled Star Block Copolymerscitations
- 2024Controlled Ring‐Opening Polymerization of Methyl Glycolide with Bifunctional Organocatalystcitations
- 2023Poly(lactic acid) stereocomplexes based molecular architectures : synthesis and crystallization
- 2020Poly(vinylidene fluoride)-based Complex Macromolecular Architectures: From Synthesis to Properties and Applicationscitations
- 2019Generating Triple Crystalline Superstructures in Melt Miscible PEO-b-PCL-b-PLLA Triblock Terpolymers by Controlling Thermal History and Sequential Crystallizationcitations
- 2018CO 2 as versatile carbonation agent of glycosides: Synthesis of 5- and 6-membered cyclic glycocarbonates and investigation of their ring-openingcitations
- 2018Block Copolymers of Macrolactones/Small Lactones by a “Catalyst-Switch” Organocatalytic Strategy. Thermal Properties and Phase Behaviorcitations
- 2017A New Role for CO2: Controlling Agent of the Anionic Ring-Opening Polymerization of Cyclic Esterscitations
- 2017Self-assembly of Polystyrene- b -poly(2-vinylpyridine)- b -poly(ethylene oxide) Triblock Terpolymerscitations
- 2017Anionic Polymerization of Styrene and 1,3-Butadiene in the Presence of Phosphazene Superbasescitations
- 2016Metal-Free Alternating Copolymerization of CO2with Epoxides: Fulfilling “Green” Synthesis and Activitycitations
- 2016Well-defined 4-arm stars with hydroxy-terminated polyethylene, polyethylene-b-polycaprolactone and polyethylene-b-(polymethyl methacrylate) 2 armscitations
- 2016Ring-opening polymerization of ω-pentadecalactone catalyzed by phosphazene superbasescitations
- 2015Triblock and pentablock terpolymers by sequential base-assisted living cationic copolymerization of functionalized vinyl etherscitations
- 2009Solid state nanofibers based on self-assemblies:from cleaving from self-assemblies to multilevel hierarchical constructscitations
Places of action
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article
Block Copolymers of Macrolactones/Small Lactones by a “Catalyst-Switch” Organocatalytic Strategy. Thermal Properties and Phase Behavior
Abstract
Poly(macrolactones) (PMLs) can be considered as biodegradable alternatives of polyethylene; however, controlling the ring-opening polymerization (ROP) of macrolactone (ML) monomers remains a challenge due to their low ring strain. To overcome this problem, phosphazene (t-BuP4), a strong superbase, has to be used as catalyst. Unfortunately, the one-pot sequential block copolymerization of MLs with small lactones (SLs) is impossible since the high basicity of t-BuP4 promotes both intra- and intermolecular transesterification reactions, thus leading to random copolymers. By using ROP and the “catalyst-switch” strategy [benzyl alcohol, t-BuP4/neutralization with diphenyl phosphate/(t-BuP2)], we were able to synthesize different well-defined PML-b-PSL block copolymers (MLs: dodecalactone, ω-pentadecalactone, and ω-hexadecalactone; SLs: δ-valerolactone and ε-caprolactone). The thermal properties and the phase behavior of these block copolymers were studied by differential scanning calorimetry and X-ray diffraction spectroscopy. This study shows that the thermal properties and phase behavior of PMLs-b-PSLs are largely influenced by the PMLs block if PMLs components constitute the majority of the block copolymers.