Next Article in Journal
One- and Two-Dimensional NMR in Studying Wood–Water Interaction at Moisturizing Spruce. Anisotropy of Water Self-Diffusion
Previous Article in Journal
A Simple Method to Synthesize Lignin Nanoparticles
Previous Article in Special Issue
Direct Cryo Writing of Aerogels via 3D Printing of Aligned Cellulose Nanocrystals Inspired by the Plant Cell Wall
Open AccessFeature PaperArticle

Spreading and Imbibition of Vesicle Dispersion Droplets on Porous Substrates

Institute of Technical Thermodynamics, TU Darmstadt, 64287 Darmstadt, Germany
Research Interfacial Technology, Evonik Nutrition & Care GmbH, 45127 Essen, Germany
Department of Chemical Engineering, Loughborough University, Loughborough, LE11 3TU, UK
Author to whom correspondence should be addressed.
Colloids Interfaces 2019, 3(3), 53;
Received: 2 June 2019 / Revised: 11 July 2019 / Accepted: 12 July 2019 / Published: 21 July 2019
(This article belongs to the Special Issue Colloids and Interfaces in Printing Technology)
Vesicles have recently found widespread use in applications such as conditioning of textiles, paper and hair, as well as transdermal drug delivery. The mode of treatment in several such cases involves the application of droplets of aqueous dispersions of vesicles onto dry porous substrates like paper and textiles. One of the factors which affects the performance of such treatments is the rate at which the droplets spread and imbibe on the porous substrate. Depending upon the specific purpose of the treatment either a fast or slow droplet spreading kinetics could be desired. Therefore, it is important to have a good understanding of the droplet spreading process and the factors which influence it. In this work, an experimental investigation of the simultaneous spreading and imbibition of vesicle dispersion droplets on cellulose filter papers is carried out. Two different types of vesicles which are composed of similar lipid molecules but exhibit contrasting lipid bilayer phase behavior are used. Two different grades of filter papers with comparable porosities but different thicknesses are used as porous substrate. It is found that the droplet spreading behavior is of the “complete wetting” type on the thicker porous substrate, whereas it is of the “partial wetting” type on the thinner substrate. Furthermore, it is observed that the spreading of droplets containing vesicles with liquid-crystalline phase bilayers occurs faster than that of vesicles with solid-gel phase bilayers. The secondary radial penetration which commences after the initial droplet spreading is complete is also investigated and discussed. View Full-Text
Keywords: vesicles; wetting; imbibition vesicles; wetting; imbibition
Show Figures

Figure 1

MDPI and ACS Style

Kumar, A.; Kleinen, J.; Venzmer, J.; Trybala, A.; Starov, V.; Gambaryan-Roisman, T. Spreading and Imbibition of Vesicle Dispersion Droplets on Porous Substrates. Colloids Interfaces 2019, 3, 53.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop