Issue 8, 2011
From the journal:

Soft Matter

Sporopollenin capsules at fluid interfaces: particle-stabilised emulsions and liquid marbles

Bernard P. Binks,*a   Andrew N. Boa,b   Matthew A. Kibble,ab   Grahame Mackenzieb  and  Anaïs Rochera  

* Corresponding authors

a Surfactant & Colloid Group, Department of Chemistry, University of Hull, Hull, UK
E-mail: b.p.binks@hull.ac.uk

b Molecules for Health Group, Department of Chemistry, University of Hull, Hull, UK

Abstract

Hollow particles of sporopollenin from spores of the plant Lycopodium clavatum have been prepared. These particles possess ionisable groups on their surface such that they become increasingly negatively charged with an increase in pH. The particles adsorb to both air–water and oil–water interfaces, stabilising liquid marbles and emulsions respectively. Water marbles can be formed at all pH values between 2 and 10 and for salt concentrations up to 1 M NaCl. Their stability to evaporation is greater than the equivalent bare water drop. Deformation and buckling of the marbles occur as water is lost due to the solid-like nature of the liquid surface. Transitional phase inversion of emulsions occurs from water-in-oil to oil-in-water with increasing pH, with that corresponding to inversion depending on the oil type. Emulsion drops of millimetre size are stable to coalescence due to a close packed layer of particles at their surfaces.

Graphical abstract: Sporopollenin capsules at fluid interfaces: particle-stabilised emulsions and liquid marbles

About
Cited by
Related
Download options Please wait...

Article information

DOI
https://doi.org/10.1039/C0SM01516D
Article type
Paper
Submitted
20 Dec 2010
Accepted
11 Feb 2011
First published
02 Mar 2011

Soft Matter, 2011,7, 4017-4024

Permissions

Request permissions

Sporopollenin capsules at fluid interfaces: particle-stabilised emulsions and liquid marbles

B. P. Binks, A. N. Boa, M. A. Kibble, G. Mackenzie and A. Rocher, Soft Matter, 2011, 7, 4017 DOI: 10.1039/C0SM01516D

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements