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Mechanistic Understanding and Three‐Dimensional Tuning of Fluid Imbibition in Silica‐Coated Cotton Linter Paper Sheets

Mikolei, Joanna J. ; Neuenfeld, Lukas ; Paech, Steffen ; Langhans, Markus ; Biesalski, Markus ; Meckel, Tobias ; Andrieu‐Brunsen, Annette (2022)
Mechanistic Understanding and Three‐Dimensional Tuning of Fluid Imbibition in Silica‐Coated Cotton Linter Paper Sheets.
In: Advanced Materials Interfaces, 9 (19)
doi: 10.1002/admi.202200064
Artikel, Bibliographie

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Kurzbeschreibung (Abstract)

Paper‐based microfluidic devices are used in point of care diagnostic, sensor technology or lab‐on‐a‐chip devices. Although a number of studies has been reported, only relatively few paper‐based diagnostic tools are available on the market. A remaining challenge is the mechanistic understanding and precise design of capillary flow in paper. Here, silica coatings are applied to control paper wettability, fiber swelling, and thus fluid transport in all three dimensions of a paper sheet via a simple dip‐coating and post‐treatment process. By adjusting the three‐dimensional silica coating distribution, a three‐dimensional asymmetric wettability gradient within the paper sheet is obtained which controls the fluid distribution and imbibition. The correlation between silica coating amount and silica distribution with the resulting fluid behavior is systematically elaborated by analyzing the interaction between fiber and fluid as well as the fiber swelling by applying confocal microscopy. Three different silica‐amount dependent fluid distribution states are demonstrated. These new insights into the mechanism of fluid imbibition using simple silica coatings enable the specific design of different imbibition mechanisms and thus the adjustment of the microfluidic properties in paper‐based microfluidic devices with control over all three spatial dimensions of a paper sheet in one fabrication step.

Typ des Eintrags: Artikel
Erschienen: 2022
Autor(en): Mikolei, Joanna J. ; Neuenfeld, Lukas ; Paech, Steffen ; Langhans, Markus ; Biesalski, Markus ; Meckel, Tobias ; Andrieu‐Brunsen, Annette
Art des Eintrags: Bibliographie
Titel: Mechanistic Understanding and Three‐Dimensional Tuning of Fluid Imbibition in Silica‐Coated Cotton Linter Paper Sheets
Sprache: Englisch
Publikationsjahr: 2022
Ort: Darmstadt
Verlag: Wiley-VCH
Titel der Zeitschrift, Zeitung oder Schriftenreihe: Advanced Materials Interfaces
Jahrgang/Volume einer Zeitschrift: 9
(Heft-)Nummer: 19
Kollation: 12 Seiten
DOI: 10.1002/admi.202200064
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Kurzbeschreibung (Abstract):

Paper‐based microfluidic devices are used in point of care diagnostic, sensor technology or lab‐on‐a‐chip devices. Although a number of studies has been reported, only relatively few paper‐based diagnostic tools are available on the market. A remaining challenge is the mechanistic understanding and precise design of capillary flow in paper. Here, silica coatings are applied to control paper wettability, fiber swelling, and thus fluid transport in all three dimensions of a paper sheet via a simple dip‐coating and post‐treatment process. By adjusting the three‐dimensional silica coating distribution, a three‐dimensional asymmetric wettability gradient within the paper sheet is obtained which controls the fluid distribution and imbibition. The correlation between silica coating amount and silica distribution with the resulting fluid behavior is systematically elaborated by analyzing the interaction between fiber and fluid as well as the fiber swelling by applying confocal microscopy. Three different silica‐amount dependent fluid distribution states are demonstrated. These new insights into the mechanism of fluid imbibition using simple silica coatings enable the specific design of different imbibition mechanisms and thus the adjustment of the microfluidic properties in paper‐based microfluidic devices with control over all three spatial dimensions of a paper sheet in one fabrication step.

Freie Schlagworte: imbibition control, paper‐based hybrid materials, paper‐based microfluidic devices
Sachgruppe der Dewey Dezimalklassifikatin (DDC): 500 Naturwissenschaften und Mathematik > 540 Chemie
600 Technik, Medizin, angewandte Wissenschaften > 660 Technische Chemie
Fachbereich(e)/-gebiet(e): 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: 02 Aug 2024 12:43
Letzte Änderung: 02 Aug 2024 12:43
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