Modification of PTFE particles towards anion conducting properties

Benjamin Sydor

doi:10.34901/mul.pub.2025.023

Modification of PTFE particles towards anion conducting properties

Titel in Übersetzung: Modifizierung von PTFE Partikeln zur Einführung von anionenleitenden Gruppen

Benjamin Sydor

Lehrstuhl für Chemie der Kunststoffe (231)

Publikation: Thesis / Studienabschlussarbeiten und Habilitationsschriften › Masterarbeit

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Abstract

Ziel dieser Masterarbeit war die Funktionalisierung von Polytetrafluorethylen (PTFE)-Partikeln zur Einführung von anionenleitenden Gruppen für den Einsatz als Bindermaterial in Anionenaustauschmembran (AEM)-Wasserelektrolysezellen. Die Funktionalisierung der Oberfläche von PTFE-Partikeln wurde hierbei in drei Prozessschritte unterteilt: die Aktivierung der Partikeloberfläche, die Einführung von Aminogruppen (-NH2) an der aktivierten Oberfläche und die Quaternisierung dieser NH2-Gruppen. Nach jedem einzelnen Prozessschritt wurden die PTFE-Partikel mit einem Röntgenphotoelektronenspektroskop (XPS) analysiert, um die Oberflächenzusammensetzung zu bestimmen. Im Rahmen dieser Arbeit haben sich die Aktivierung der PTFE-Partikeloberfläche mittels Wasserstoffplasmas (H2-Plasma) sowie die Oberflächenaktivierung und das Einbringen von NH2-Gruppen mittels Ammoniakplasmas (NH3-Plasma) als erfolgreich erwiesen. Diese Ergebnisse bilden eine wichtige Grundlage für weitere Forschungen zur Funktionalisierung von PTFE-Partikeln, um die erforderlichen Eigenschaften für AEM-Wasserelektrolysezellen zu erreichen.

Titel in Übersetzung	Modifizierung von PTFE Partikeln zur Einführung von anionenleitenden Gruppen
Originalsprache	Englisch
Qualifikation	Dipl.-Ing.
Gradverleihende Hochschule	Montanuniversität
Betreuer/-in / Berater/-in	Bandl, Christine, Betreuer (intern)
Datum der Bewilligung	20 Dez. 2024
DOIs	https://doi.org/10.34901/mul.pub.2025.023
Publikationsstatus	Veröffentlicht - 2024

Bibliographische Notiz

nicht gesperrt

Schlagwörter

PTFE-Partikel
Modifikation
Plasmabehandlung
Quaternisierung
Ionenleitfähigkeit
AEM
Wasserelektrolyse
XPS

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10.34901/mul.pub.2025.023Lizenz: CC BY

VolltextEndgültige, publizierte Fassung, 2,85 MB

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title = "Modification of PTFE particles towards anion conducting properties",

abstract = "The objective of this master¿s thesis was to functionalise polytetrafluoroethylene (PTFE) particles towards anion conducting properties for the use as a binder material in anion exchange membrane (AEM) water electrolysis cells. The functionalisation of PTFE particle surfaces was divided into three process stages: the activation of the surface, the introduction of amino (NH2) groups to the activated surface and the quaternisation of the NH2 groups. After each individual process stage the PTFE particles were analysed with an X-ray photoelectron spectroscope (XPS) to determine the surface composition. Within the scope of this thesis, the activation of the PTFE particle surface via hydrogen (H2) plasma and the introduction of NH2 groups via silanisation or ammonia (NH3) plasma have proven to be successful, whereas the quaternization requires further investigation. The findings presented within this thesis provide a crucial foundation for further research into the functionalisation of PTFE particles to achieve the required properties for AEM water electrolysis cells.",

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N2 - The objective of this master¿s thesis was to functionalise polytetrafluoroethylene (PTFE) particles towards anion conducting properties for the use as a binder material in anion exchange membrane (AEM) water electrolysis cells. The functionalisation of PTFE particle surfaces was divided into three process stages: the activation of the surface, the introduction of amino (NH2) groups to the activated surface and the quaternisation of the NH2 groups. After each individual process stage the PTFE particles were analysed with an X-ray photoelectron spectroscope (XPS) to determine the surface composition. Within the scope of this thesis, the activation of the PTFE particle surface via hydrogen (H2) plasma and the introduction of NH2 groups via silanisation or ammonia (NH3) plasma have proven to be successful, whereas the quaternization requires further investigation. The findings presented within this thesis provide a crucial foundation for further research into the functionalisation of PTFE particles to achieve the required properties for AEM water electrolysis cells.

AB - The objective of this master¿s thesis was to functionalise polytetrafluoroethylene (PTFE) particles towards anion conducting properties for the use as a binder material in anion exchange membrane (AEM) water electrolysis cells. The functionalisation of PTFE particle surfaces was divided into three process stages: the activation of the surface, the introduction of amino (NH2) groups to the activated surface and the quaternisation of the NH2 groups. After each individual process stage the PTFE particles were analysed with an X-ray photoelectron spectroscope (XPS) to determine the surface composition. Within the scope of this thesis, the activation of the PTFE particle surface via hydrogen (H2) plasma and the introduction of NH2 groups via silanisation or ammonia (NH3) plasma have proven to be successful, whereas the quaternization requires further investigation. The findings presented within this thesis provide a crucial foundation for further research into the functionalisation of PTFE particles to achieve the required properties for AEM water electrolysis cells.

KW - PTFE-Partikel

KW - Modifikation

KW - Plasmabehandlung

KW - Quaternisierung

KW - Ionenleitfähigkeit

KW - AEM

KW - Wasserelektrolyse

KW - XPS

KW - PTFE particles

KW - modification

KW - plasma treatment

KW - quaternisation

KW - ion conductivity

KW - AEM

KW - water electrolysis

KW - XPS

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DO - 10.34901/mul.pub.2025.023

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