OC-Kolloquium: Prof. Dr. Alex Plajer, Universität Bayreuth
Prof. Dr. Alex Plajer, Universität Bayreuth
Ring-Opening Terpolymerisation of Elemental Sulfur Waste via Lithium Catalysis
Elemental sulfur, a waste product of the oil refinement process, represents a promising raw material for the synthesis of degradable polymers. We show that simple lithium alkoxides facilitate the polymerisation of elemental sulfur S8 with industrially relevant propylene oxide (PO) and CS2 (a base chemical sourced from waste S8 itself) to give poly(monothiocarbonate-alt-Sx) in which x can be controlled by the amount of supplied sulfur. The in situ generation of thiolate intermediates obtained by a rearrangement, which follows CS2 and PO incorporation, allows to combine S8 and epoxides into one polymer sequence that would otherwise not be possible.
Ring-Opening Terpolymerisation of Elemental Sulfur Waste via Lithium Catalysis
Elemental sulfur, a waste product of the oil refinement process, represents a promising raw material for the synthesis of degradable polymers. We show that simple lithium alkoxides facilitate the polymerisation of elemental sulfur S8 with industrially relevant propylene oxide (PO) and CS2 (a base chemical sourced from waste S8 itself) to give poly(monothiocarbonate-alt-Sx) in which x can be controlled by the amount of supplied sulfur. The in situ generation of thiolate intermediates obtained by a rearrangement, which follows CS2 and PO incorporation, allows to combine S8 and epoxides into one polymer sequence that would otherwise not be possible.
Zeit
Dienstag, 17.12.24 - 11:15 Uhr
- 13:00 Uhr
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OC-Kolloquium
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Prof. Dr. Alex Plajer
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Ort
Kekulé-Institut für Organische Chemie und Biochemie
Raum
SR 1.104
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nicht erforderlich
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OC-Kolloquium
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