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Using Pickering stabilisation as a tool for the fabrication of supra-colloidal structures

By Patrick James Colver

Abstract

We have shown the use of Pickering stabilisation (the stabilisation of an interface with solid particles) in the creation of different materials. This gave us access to structures not possible in normal surfactant systems. These materials have some unique properties: For instance by using the high forces holding the Pickering particles at an oil-water-interface we can create interesting droplet morphologies. The non-spherical droplets obtained this way have potential uses in materials such as self healing composites. Additionally we developed the first Pickering miniemulsion system by using Laponite clay as the stabiliser. We went on to then demonstrate the improvements the latex can impart on the properties of pressure sensitive adhesives as well as increasing the thermal stability of the encapsulated polymer. We also created the first Pickering poly(HIPE) material and have shown that it is possible to produce structures which can be used in applications such as microfiltration. Finally the first purely Pickering emulsion polymerisation system was also designed using Ludox particles as a charged stabiliser. We could then create interesting shell morphologies by post treating the armoured latex particles

Topics: QD
OAI identifier: oai:wrap.warwick.ac.uk:1942

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