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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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Pich, Andrij
Maastricht University
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (19/19 displayed)
- 2024Enhancing Adhesion of Fibrin-Based Hydrogel to Polythioether Polymer Surfacescitations
- 2023Novel Pectin Binder for Satelliting Carbides to H13 Tool Steel for PBF-LB Processingcitations
- 2022Characterization of transient rheological behavior of soft materials using ferrofluid dropletscitations
- 2022Generation of local diffusioosmotic flow by light responsive microgelscitations
- 2021Post-Modification of Biobased Pyrazines and Their Polyesterscitations
- 2020Stimuli-Responsive Zwitterionic Core-Shell Microgels for Antifouling Surface Coatingscitations
- 2020Amphiphilic PVCL/TBCHA microgelscitations
- 2020Ranking of fiber composites by estimation of types and mechanisms of their fracturecitations
- 2020Polyphosphazene-Tannic Acid Colloids as Building Blocks for Bio-Based Flame-Retardant Coatingscitations
- 2020Mononuclear zinc(II) Schiff base complexes as catalysts for the ring-opening polymerization of lactidecitations
- 2020Dual-Temperature-Responsive Microgels from a Zwitterionic Functional Graft Copolymer with Superior Protein Repelling Propertycitations
- 2019Heterolepic β ‐Ketoiminate Zinc Phenoxide Complexes as Efficient Catalysts for the Ring Opening Polymerization of Lactidecitations
- 2019Selenium-Modified Microgels as Bio-Inspired Oxidation Catalystscitations
- 2019Heterolepic β-Ketoiminate Zinc Phenoxide Complexes as Efficient Catalysts for the Ring Opening Polymerization of Lactidecitations
- 2019Heterolepic β‐Ketoiminate Zinc Phenoxide Complexes as Efficient Catalysts for the Ring Opening Polymerization of Lactide
- 2019Tuning Channel Architecture of Interdigitated Organic Electrochemical Transistors for Recording the Action Potentials of Electrogenic Cellscitations
- 2017Internal structure and phase transition behavior of stimuli-responsive microgels in PEG meltscitations
- 2014Water dispersible electrically conductive poly(3,4- ethylenedioxythiophene) nanospindles by liquid crystalline template assisted polymerizationcitations
- 2013Formation of catalytically active gold-polymer microgel hybrids via a controlled in situ reductive processcitations
Places of action
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article
Mononuclear zinc(II) Schiff base complexes as catalysts for the ring-opening polymerization of lactide
Abstract
<p>Materials combining bio-based resource and degradability aspects such as polylactide (PLA) can represent a sustainable alternative to commercially used oil-based plastics. With tin octanoate (Sn(Oct)(2)) as the catalyst of choice for industrial scale PLA production, traces of the toxic heavy metal can be released into the environment, rendering PLA unsuitable for specific applications. Herein we present four new homoleptic zinc Schiff base complexes that offer facile synthesis and can be handled under aerobic conditions. These robust, tetra-coordinated complexes have been tested as catalysts for the ring-opening polymerization (ROP) of lactide and are well suited under industrially relevant conditions. In situ Raman spectroscopy has been used to determine the apparent reaction rate constant (k(app)) for all complexes at 150 degrees C in bulk. For the fastest complex a k(p) of 3.66 +/- 0.14 x 10(-2) L mol(-1) s(-1) was additionally determined. For this catalyst, 71% conversion and a number-averaged molar mass of above 90000 g mol(-1) has been reached within less than 30 min at a monomer-to-initiator ratio ([M]/[I]) of 1000:1. The good polydispersity (D = 1.7) indicates a controllable ROP via the coordination-insertion mechanism (CIM).</p>