Probing Nanoscale Relaxation Behavior in Thin Polymer Films
- The investigations into the complicated effects of film thickness on bulk properties of thin polymer films has yielded conflicting results. The reduction in molecular mobility, and with it an increase in the glass transition temperature, for thin films of poly (bisphenol A carbonate) (PBAC) was assigned to the formation of an adsorbed layer. The adsorbed layer was obtained by washing away the loosely bounded chains using a good solvent. Next, using atomic force microscopy (AFM), the thickness of each sample was measured after annealing for various times at three different annealing temperatures. The growth of this adsorbed layer was shown to deviate from the previously reported 2-step mechanism seen for other polymers. For PBAC, after very long annealing times at high temperatures the thin films were dewetted, where segments of the adsorbed layer were removed from the substrate.
Autor*innen: | Hassan OmarORCiD |
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Koautor*innen: | Paulina SzymoniakORCiD, Andreas Hertwig, Andreas SchönhalsORCiD |
Dokumenttyp: | Posterpräsentation |
Veröffentlichungsform: | Präsentation |
Sprache: | Englisch |
Jahr der Erstveröffentlichung: | 2023 |
Organisationseinheit der BAM: | 6 Materialchemie |
6 Materialchemie / 6.6 Physik und chemische Analytik der Polymere | |
DDC-Klassifikation: | Technik, Medizin, angewandte Wissenschaften / Ingenieurwissenschaften / Ingenieurwissenschaften und zugeordnete Tätigkeiten |
Freie Schlagwörter: | Adsorbed Layer; Atomic force microscopy; Broadband dielectric spectroscopy; Growth Kinetics; Thin films |
Themenfelder/Aktivitätsfelder der BAM: | Material |
Material / Nano | |
Veranstaltung: | Royal Society of Chemistry (RSC) Poster |
Veranstaltungsort: | Online meeting |
Beginndatum der Veranstaltung: | 28.02.2023 |
Enddatum der Veranstaltung: | 01.03.2023 |
Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
Datum der Freischaltung: | 24.03.2023 |
Referierte Publikation: | Nein |