Nowottny, Elisabeth (2024)
Kinetic modeling of the high-pressure free-radical copolymerization of ethene and vinyl acetate.
Technische Universität Darmstadt
Dissertation, Bibliographie
Kurzbeschreibung (Abstract)
This work is concerned with modeling the free-radical high-pressure copolymerization of ethylene and vinyl acetate. Hereby, the focus lies on developing a kinetic model that depicts the molar mass distribution, especially for high molar masses and long-chain branching across various conditions, including different vinyl acetate content, temperatures, conversions, and reactor types (mini-plant and industrial scale). The approaches were deriving new kinetic coefficients from published data for vinyl acetate polymerization, using a high-temperature refractometer to measure refractive index increments for precise molecular weight distribution analysis, and synthesizing a diverse set of copolymer samples for comprehensive validation of the kinetic model.
| Typ des Eintrags: | Dissertation | ||||
|---|---|---|---|---|---|
| Erschienen: | 2024 | ||||
| Autor(en): | Nowottny, Elisabeth | ||||
| Art des Eintrags: | Bibliographie | ||||
| Titel: | Kinetic modeling of the high-pressure free-radical copolymerization of ethene and vinyl acetate | ||||
| Sprache: | Englisch | ||||
| Referenten: | Busch, Prof. Dr. Markus ; Andrieu-Brunsen, Prof. Dr. Annette | ||||
| Publikationsjahr: | 2024 | ||||
| Ort: | Düren | ||||
| Verlag: | Shaker Verlag | ||||
| Reihe: | Darmstädter Schriftenreihe der Polymerisationstechnik | ||||
| Band einer Reihe: | 26 | ||||
| Kollation: | v, 153, XXXIX Seiten | ||||
| Datum der mündlichen Prüfung: | 13 Mai 2024 | ||||
| Kurzbeschreibung (Abstract): | This work is concerned with modeling the free-radical high-pressure copolymerization of ethylene and vinyl acetate. Hereby, the focus lies on developing a kinetic model that depicts the molar mass distribution, especially for high molar masses and long-chain branching across various conditions, including different vinyl acetate content, temperatures, conversions, and reactor types (mini-plant and industrial scale). The approaches were deriving new kinetic coefficients from published data for vinyl acetate polymerization, using a high-temperature refractometer to measure refractive index increments for precise molecular weight distribution analysis, and synthesizing a diverse set of copolymer samples for comprehensive validation of the kinetic model. |
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| Alternatives oder übersetztes Abstract: |
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| Freie Schlagworte: | Vinylacetat, Polymerisationskinetik, freiradikalische Polymerisation, Arrhenius, Temperaturabhänigkeit, Druckabhängigkeit, Ethen, Polyethylenvinylacetat, EVA, Transferreaktion, Modellsubstanz, Konfidenzellipsen, Vinyl acetate, free-radical polymerization kinetics | ||||
| Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Technische Chemie > Technische Chemie III |
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| Hinterlegungsdatum: | 04 Sep 2024 05:43 | ||||
| Letzte Änderung: | 04 Sep 2024 05:43 | ||||
| PPN: | 519594142 | ||||
| Referenten: | Busch, Prof. Dr. Markus ; Andrieu-Brunsen, Prof. Dr. Annette | ||||
| Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 13 Mai 2024 | ||||
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