Controlling the drying-induced peeling of colloidal films

Osman, A., Goehring, L. ORCID: 0000-0002-3858-7295, Stitt, H. and Shokri, N., 2020. Controlling the drying-induced peeling of colloidal films. Soft Matter, 16 (36), pp. 8345-8351. ISSN 1744-683X

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Abstract

In this work, we investigated the effect of the suspension properties on the drying dynamics and the resulting film peeling instability. To do so, a comprehensive series of experiments were conducted using drops of aqueous mixtures of colloidal silica dispersions and polyethylene oxide (PEO) additives. Time- lapse digital microscope images of the evaporating droplets show that film peeling can be discouraged and eventually eliminated with an increase in PEO concentration and molecular weight. This is due to the additives modifying the suspension properties which in turn modify the drying front length across the evaporating surface. Our result extends the understanding of the physics of film failure which is relevant information for various industrial processes such as in inkjet printing and coating applications.

Item Type: Journal article
Publication Title: Soft Matter
Creators: Osman, A., Goehring, L., Stitt, H. and Shokri, N.
Publisher: Royal Society of Chemistry (RSC)
Date: 23 September 2020
Volume: 16
Number: 36
ISSN: 1744-683X
Identifiers:
NumberType
10.1039/d0sm00252fDOI
1370809Other
Divisions: Schools > School of Science and Technology
Record created by: Linda Sullivan
Date Added: 01 Oct 2020 09:00
Last Modified: 01 Oct 2020 09:00
URI: http://irep.ntu.ac.uk/id/eprint/41054

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