Auernhammer, Julia ; Keil, Tom ; Lin, Binbin ; Schäfer, Jan-Lukas ; Xu, Bai-Xiang ; Biesalski, Markus ; Stark, Robert W. (2024)
Mapping humidity-dependent mechanical properties of a single cellulose fibre.
In: Cellulose, 2021, 28 (13)
doi: 10.26083/tuprints-00023522
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
Modelling of single cellulose fibres is usually performed by assuming homogenous properties, such as strength and Young’s modulus, for the whole fibre. Additionally, the inhomogeneity in size and swelling behaviour along the fibre is often disregarded. For better numerical models, a more detailed characterisation of the fibre is required. Herein, we report a method based on atomic force microscopy to map these properties along the fibre. A fibre was mechanically characterised by static colloidal probe AFM measurements along the longitudinal direction of the fibre. Thus, the contact stress and strain at each loading point could be extracted. Stress–strain curves were be obtained along the fibre. Additionally, mechanical properties such as adhesion or dissipation were mapped. Local variations of the effective fibre radius were recorded via confocal laser scanning microscopy. Scanning electron microscopy measurements revealed the local macroscopic fibril orientation and provided an overview of the fibre topography. By combining these data, regions along the fibre with higher adhesion, dissipation, bending ability and strain or differences in the contact stress when increasing the relative humidity could be identified. This combined approach allows for one to obtain a detailed picture of the mechanical properties of single fibres.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Auernhammer, Julia ; Keil, Tom ; Lin, Binbin ; Schäfer, Jan-Lukas ; Xu, Bai-Xiang ; Biesalski, Markus ; Stark, Robert W. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Mapping humidity-dependent mechanical properties of a single cellulose fibre |
| Sprache: | Englisch |
| Publikationsjahr: | 10 Dezember 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | September 2021 |
| Ort der Erstveröffentlichung: | Dordrecht |
| Verlag: | Springer Science |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Cellulose |
| Jahrgang/Volume einer Zeitschrift: | 28 |
| (Heft-)Nummer: | 13 |
| DOI: | 10.26083/tuprints-00023522 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/23522 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichung DeepGreen |
| Kurzbeschreibung (Abstract): | Modelling of single cellulose fibres is usually performed by assuming homogenous properties, such as strength and Young’s modulus, for the whole fibre. Additionally, the inhomogeneity in size and swelling behaviour along the fibre is often disregarded. For better numerical models, a more detailed characterisation of the fibre is required. Herein, we report a method based on atomic force microscopy to map these properties along the fibre. A fibre was mechanically characterised by static colloidal probe AFM measurements along the longitudinal direction of the fibre. Thus, the contact stress and strain at each loading point could be extracted. Stress–strain curves were be obtained along the fibre. Additionally, mechanical properties such as adhesion or dissipation were mapped. Local variations of the effective fibre radius were recorded via confocal laser scanning microscopy. Scanning electron microscopy measurements revealed the local macroscopic fibril orientation and provided an overview of the fibre topography. By combining these data, regions along the fibre with higher adhesion, dissipation, bending ability and strain or differences in the contact stress when increasing the relative humidity could be identified. This combined approach allows for one to obtain a detailed picture of the mechanical properties of single fibres. |
| Freie Schlagworte: | Cellulose, Single Fibre Strength, Scanning Electron Microscopy, Confocal Laser Scanning Microscopy, Atomic Force Microscopy, Colloidal Probe |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-235228 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 500 Naturwissenschaften und Mathematik > 530 Physik 500 Naturwissenschaften und Mathematik > 540 Chemie |
| Fachbereich(e)/-gebiet(e): | 11 Fachbereich Material- und Geowissenschaften 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Mechanik Funktionaler Materialien 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physikalische Metallkunde 11 Fachbereich Material- und Geowissenschaften > Materialwissenschaft > Fachgebiet Physics of Surfaces 07 Fachbereich Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie 07 Fachbereich Chemie > Ernst-Berl-Institut > Fachgebiet Makromolekulare Chemie > Makromolekulare Chemie und Papierchemie |
| Hinterlegungsdatum: | 10 Dez 2024 13:07 |
| Letzte Änderung: | 11 Dez 2024 07:50 |
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| Suche nach Titel in: | TUfind oder in Google |
Verfügbare Versionen dieses Eintrags
- Mapping humidity-dependent mechanical properties of a single cellulose fibre. (deposited 10 Dez 2024 13:07) [Gegenwärtig angezeigt]
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