Enzymatic Ring‐Opening Polymerization of Lactones: Traditional Approaches and Alternative Strategies
Sign Up to like & getrecommendations! Published in 2019 at "ChemCatChem"
DOI: 10.1002/cctc.201900976
Abstract: Biodegradable polymers such as polylactides and other polylactones and their synthesis gain progressively importance. Enzymatic ring‐opening polymerization (eROP) is the next step sustainable synthesis of polyesters, also suitable for biomedical applications due to high selectivity… read more here.
Keywords: ring opening; opening polymerization; polymerization lactones; lactones traditional ... See more keywords
Highly Active N,O Zinc Guanidine Catalysts for the Ring-Opening Polymerization of Lactide.
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DOI: 10.1002/cssc.201701237
Abstract: New zinc guanidine complexes with N,O donor functionalities were prepared, characterized by X-Ray crystallography, and examined for their catalytic activity in the solvent-free ring-opening polymerization (ROP) of technical-grade rac-lactide at 150 °C. All complexes showed a… read more here.
Keywords: zinc guanidine; ring opening; polymerization; opening polymerization ... See more keywords
Sustainable polythioesters via thio(no)lactones: monomer synthesis, ring-opening polymerization, end-of-life considerations and industrial perspectives.
Sign Up to like & getrecommendations! Published in 2023 at "ChemSusChem"
DOI: 10.1002/cssc.202202276
Abstract: As the environmental effects of plastics are of ever greater concern, the industry is driven towards more sustainable polymers. Besides sustainability, our fast-developing society imposes the need for highly versatile materials. While aliphatic polyesters (PEs)… read more here.
Keywords: end life; opening polymerization; thio lactones; thio ... See more keywords
The mechanism of ring‐opening polymerization of L‐lactide by ICl3 catalysts: Halogen bond catalysis or participating in reactions?
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Computational Chemistry"
DOI: 10.1002/jcc.26059
Abstract: The mechanism of ring‐opening polymerization of L‐lactide by iodine trichloride (ICl3) catalyst has been explored by using density functional theory (DFT) calculations and three catalytic pathways were proposed. The first and second pathways belong to… read more here.
Keywords: ring opening; opening polymerization; polymerization lactide; icl3 catalysts ... See more keywords
Strontium Isopropoxide: A Highly Active Catalyst for the Ring-Opening Polymerization of Lactide and Various Lactones.
Sign Up to like & getrecommendations! Published in 2019 at "Macromolecular rapid communications"
DOI: 10.1002/marc.201900306
Abstract: Commercially available strontium isopropoxide represents a suitable catalyst/initiator for the ring-opening polymerization (ROP) of lactide (LA), ε-caprolactone, δ-valerolactone, δ-caprolactone, and δ-decalactone. Well-defined polyesters are accessible via the solution polymerization of lactide in toluene with a… read more here.
Keywords: ring opening; polymerization; opening polymerization; strontium isopropoxide ... See more keywords
Organocatalytic Synthesis of Alkyne-Functional Aliphatic Polycarbonates via Ring-Opening Polymerization of an Eight-Membered-N-Cyclic Carbonate.
Sign Up to like & getrecommendations! Published in 2020 at "Macromolecular rapid communications"
DOI: 10.1002/marc.202000378
Abstract: The synthesis of well-defined propargyl-functional aliphatic polycarbonates is achieved via the organocatalytic ring-opening polymerization of prop-2-yn-1-yl 2-oxo-1,3,6-dioxazocane-6-carboxylate (P-8NC) using a wide variety of commercially available or readily made, shelf-stable organocatalysts. The resulting homopolymers show low… read more here.
Keywords: aliphatic polycarbonates; ring opening; opening polymerization; functional aliphatic ... See more keywords
Racemic S-(ethylsulfonyl)-dl-cysteine N-Carboxyanhydrides Improve Chain Lengths and Monomer Conversion for β-Sheet-Controlled Ring-Opening Polymerization.
Sign Up to like & getrecommendations! Published in 2020 at "Macromolecular rapid communications"
DOI: 10.1002/marc.202000470
Abstract: The secondary structure formation of polypeptides not only governs folding and solution self-assembly but also affects the nucleophilic ring-opening polymerization of α-amino acid-N-carboxyanhydrides (NCAs). Whereby helical structures are known to enhance polymerization rates, β-sheet-like assemblies… read more here.
Keywords: ring opening; polymerization; opening polymerization; ethylsulfonyl cysteine ... See more keywords
Towards New Robust Zn(II) Complexes for the Ring‐Opening Polymerization of Lactide Under Industrially Relevant Conditions
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DOI: 10.1002/open.201900199
Abstract: Abstract The synthesis of bio‐based and biodegradable plastics is a hot topic in research due to growing environmental problems caused by omnipresent plastics. As a result, polylactide, which has been known for years, has seen… read more here.
Keywords: ring opening; robust complexes; opening polymerization; new robust ... See more keywords
Lewis acid/base modulation in β-diiminate zinc-catalyzed switchable ring-opening polymerization of rac-lactide
Sign Up to like & getrecommendations! Published in 2019 at "Science China Chemistry"
DOI: 10.1007/s11426-018-9414-3
Abstract: Two β-diiminate zinc complexes were prepared and found to show high activity and well-controlled catalytic behavior in the ring-opening polymerization of rac-lactide. Coordination of the Lewis acid to the zinc complexes completely terminated the polymerization.… read more here.
Keywords: ring opening; lewis acid; polymerization; rac lactide ... See more keywords
In-situ modification of carbon fibers with hyperbranched polyglycerol via anionic ring-opening polymerization for use in high-performance composites
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DOI: 10.1016/j.carbon.2017.08.008
Abstract: Abstract In this study, hyperbranched polyglycerol (HPG) is chemically bound onto carbon fiber (CF) surface by anionic ring-opening polymerization for linking fiber and matrix to release interior and exterior applied forces. To explore the optimal… read more here.
Keywords: ring opening; polymerization; carbon; opening polymerization ... See more keywords
Rare-earth metal complexes as catalysts for ring-opening polymerization of cyclic esters
Sign Up to like & getrecommendations! Published in 2019 at "Coordination Chemistry Reviews"
DOI: 10.1016/j.ccr.2019.04.013
Abstract: Abstract This review is focused on recent advances in the ring-opening polymerization of lactide and lactones (mainly caprolactone and β-butyrolactone) which were achieved due to the application of the initiating systems based on rare-earth complexes. read more here.
Keywords: earth metal; metal complexes; opening polymerization; rare earth ... See more keywords