Mehlhase, Sabrina (2016)
Development of a Lignin Substituted Thermoset for Fiber Reinforced Polymers.
Technische Universität Darmstadt
Dissertation, Erstveröffentlichung
Kurzbeschreibung (Abstract)
The scope of this work is to introduce the by-product material lignin of the industrial pulping process in a completely new value chain of fiber reinforced polymers. Due to its natural origin the use of lignin in conventional applications is limited because of process impurities such as sulfur contamination, chemical inhomogeneities arising from a non-uniform feedstock and the complexity of its characterization. However, lignin presents a renewable source for bulking agents which possess manifold possibilities compared to conventional wooden derivatives such as wood flour or wood fibers. It is possible to adjust fusibility, glass transition temperatures and solubility by the variation of the molecular weight of the lignin. In addition, the chemical functionality of lignin can be specifically defined as required for an application. Searching for new valuable markets for lignin, fiber reinforced polymers were found to be of particular interest. Especially epoxy based thermosets seem highly promising. An easy and inexpensive method to produce fiber reinforced plastics is the wet lay-up process. This technique combined with newly developed lignin filled epoxy resins provides a new set of materials with interesting properties.
Typ des Eintrags: | Dissertation | ||||
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Erschienen: | 2016 | ||||
Autor(en): | Mehlhase, Sabrina | ||||
Art des Eintrags: | Erstveröffentlichung | ||||
Titel: | Development of a Lignin Substituted Thermoset for Fiber Reinforced Polymers | ||||
Sprache: | Englisch | ||||
Referenten: | Rehahn, Prof. Dr. Matthias ; Biesalski, Prof. Dr. Markus | ||||
Publikationsjahr: | 14 Juni 2016 | ||||
Ort: | Darmstadt | ||||
Datum der mündlichen Prüfung: | 2 Mai 2016 | ||||
URL / URN: | http://tuprints.ulb.tu-darmstadt.de/5521 | ||||
Kurzbeschreibung (Abstract): | The scope of this work is to introduce the by-product material lignin of the industrial pulping process in a completely new value chain of fiber reinforced polymers. Due to its natural origin the use of lignin in conventional applications is limited because of process impurities such as sulfur contamination, chemical inhomogeneities arising from a non-uniform feedstock and the complexity of its characterization. However, lignin presents a renewable source for bulking agents which possess manifold possibilities compared to conventional wooden derivatives such as wood flour or wood fibers. It is possible to adjust fusibility, glass transition temperatures and solubility by the variation of the molecular weight of the lignin. In addition, the chemical functionality of lignin can be specifically defined as required for an application. Searching for new valuable markets for lignin, fiber reinforced polymers were found to be of particular interest. Especially epoxy based thermosets seem highly promising. An easy and inexpensive method to produce fiber reinforced plastics is the wet lay-up process. This technique combined with newly developed lignin filled epoxy resins provides a new set of materials with interesting properties. |
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Alternatives oder übersetztes Abstract: |
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URN: | urn:nbn:de:tuda-tuprints-55217 | ||||
Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 500 Naturwissenschaften 500 Naturwissenschaften und Mathematik > 540 Chemie |
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Fachbereich(e)/-gebiet(e): | 07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie |
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Hinterlegungsdatum: | 26 Jun 2016 19:55 | ||||
Letzte Änderung: | 26 Jun 2016 19:55 | ||||
PPN: | |||||
Referenten: | Rehahn, Prof. Dr. Matthias ; Biesalski, Prof. Dr. Markus | ||||
Datum der mündlichen Prüfung / Verteidigung / mdl. Prüfung: | 2 Mai 2016 | ||||
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