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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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Frey, Holger
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2024Supersoft Polymer Melts in Binary Blends of Bottlebrush cis‐1,4‐Polyfarnesene and cis‐1,4‐Polyisoprenecitations
- 2023Merging styrene and diene structures to a cyclic diene : anionic polymerization of 1-vinylcyclohexene (VCH)
- 2023Merging Styrene and Diene Structures to a Cyclic Diene: Anionic Polymerization of 1‐Vinylcyclohexene (VCH)citations
- 2023Bifunctional Carbanionic Synthesis of Fully Bio-Based Triblock Structures Derived from β-Farnesene and ll-Dilactide: Thermoplastic Elastomerscitations
- 2023Bifunctional Carbanionic Synthesis of Fully Bio-Based Triblock Structures Derived from β-Farnesene and ll-Dilactide: Thermoplastic Elastomers
- 2023Revealing the monomer gradient of polyether copolymers prepared using N‐heterocyclic olefins : metal‐free anionic versus zwitterionic Lewis pair polymerization
- 2023Bifunctional carbanionic synthesis of fully bio-based triblock structures derived from β-farnesene and LL-dilactide : thermoplastic elastomers
- 2022Glycidyl cinnamate : copolymerization with glycidyl ethers, in-situ NMR kinetics, and photocrosslinking
- 2022In situ kinetics reveal the influence of solvents and monomer structure on the anionic ring-opening copolymerization of epoxides
- 2020Efficiency Boosting of Surfactants with Poly(ethylene oxide)-Poly(alkyl glycidyl ether)s: A New Class of Amphiphilic Polymerscitations
- 2020Tapered copolymers of styrene and 4-vinylbenzocyclobutene via carbanionic polymerization for crosslinkable polymer films
- 2020Synthesis and Solution Processing of Nylon-5 Ferroelectric Thin Filmscitations
- 2020Synthesis and solution processing of nylon-5 ferroelectric thin films : the renaissance of odd-nylons?
- 2019Glycidyl tosylate: polymerization of a “non-polymerizable” monomer permits universal post-functionalization of polyethers
- 2019Solution-processed transparent ferroelectric nylon thin filmscitations
- 2017Acid-labile surfactants based on poly(ethyleneglycol), carbon dioxide and propylene oxidecitations
- 2016Oxidation-responsive and "clickable" poly(ethylene glycol) via copolymerization of 2-(methylthio)ethyl glycidyl ethercitations
- 2016Acid-Labile Amphiphilic PEO-b-PPO-b-PEO Copolymerscitations
- 2016Hierachical Ni@Fe2O3 superparticles through epitaxial growth of gamma-Fe2O3 nanorods on in situ formed Ni nanoplatescitations
- 2016Processing and adjusting the hydrophilicity of poly(oxymethylene) (co)polymerscitations
- 2014Stimuli-Responsive Tertiary Amine Functional PEGs Based on N,N-Dialkylglycidylaminescitations
- 2014Ferrocene-containing multifunctional polyetherscitations
- 2013Enlarging the toolboxcitations
- 2013Ferrocenyl glycidyl ethercitations
- 2011Rapid access to polyfunctional lipids with complex architecture via oxyanionic ring-opening polymerizationcitations
- 2011PEG-based multifunctional polyethers with highly reactive vinyl-ether side chains for click-type functionalizationcitations
- 2010"Functional poly(ethylene glycol)"citations
- 2008Carbanions on tap - Living anionic polymerization in a microstructured reactorcitations
- 2008Ionic polymerizations in microstructured reactors
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article
Carbanions on tap - Living anionic polymerization in a microstructured reactor
Abstract
<p>The paper describes the living anionic polymerization of styrenes to homo- and diblock copolymers in continuous flow, using a microstructured mixing set-up ("microreactor"). Reaction times and experimental effort are significantly reduced compared to classical batch methods that often require stringent reaction conditions and strict drying of the apparatus by "break-seal" and "high vacuum" techniques. In continuous flow, residual impurities can be removed by purging the reactor with monomer and initiator solution before polymer samples are collected at the device outlet on a scale of up to 200 g · h<sup>-1</sup>. Facile molecular weight adjustment is achieved by variation of the flow rates of initiator or monomer solutions. The polymerization of styrene in THF and cyclohexane was studied with respect to control of molecular weight and polydispersity. Furthermore, diblock copolymers with different block lengths and low polydispersities, consisting of styrene- and 4-tert-butoxystyrene blocks were synthesized, employing a second micromixer for a delayed introduction of the additional monomer. All materials were investigated by NMR-spectroscopy, SEC/MALLS, and MALDI-TOF mass spectrometry, confirming narrow molecular weight distributions (MWDs; M̄<sub>w</sub>/M̄<sub>n</sub> 1.09-1.25), molecular weights in the range of 500-70000 g · mol<sup>-1</sup>, and complete end-functionalization. No dimerization due to side reactions that would occur in the presence of oxygen was observed, evidencing efficient shielding of the apparatus from environmental influences.</p>