News

This process creates a very versatile polymer latex product. It can be used to create scratch resistant paints in which the scratches heal themselves. It can be fine tuned to produce polymer based packaging which will allow water or air to pass through the packaging in tailored ways. The resultant rough textured spherical shapes also lend themselves to the creation of sheets with polymer that present much more surface area than usual allowing more efficient interaction with other materials.

The versatility of this process did not stop there. By exposing the material to a second simple step which deposited another polymer layer on top of the already silica based nanoparticles "battered" polymers the researchers were able to produce particles with an even greater range of properties and uses. The image shows such a multi-layered polymer colloid and was taken with a transmission electron microscope.

Industrialists will be interested not just in the versatility of the end product but the ease and cost effectiveness of the process. The Warwick research team has worked on a number of other processes that coated polymers in forms of protection but they all required a number of steps to produce the end result. This new process cuts dramatically the time needed to create such materials and its single step can already be produced on a mass scale with currently used industrial equipment. The amount of material that one can harvest from the process will also impress industrialists as the Warwick team showed that the useful product can easily be made up to around 45% of the volume of each water-based solution used in their process. This compares with figures of as of little as 1 to 10 % for comparable multi-step processes that make these complex particles.

The research paper by Patrick J. Colver, Catheline A. L. Colard, and Stefan A. F. Bon at the University of Warwick is entitled Multilayered Nanocomposite Polymer Colloids Using Emulsion Polymerization Stabilized by Solid Particles in the Journal of the American Chemical Society. See http://pubs.acs.org/doi/abs/10.1021/ja807242k

For further information please contact:

Dr Stefan Bon, Associate Professor of Polymer Chemistry
Department of Chemistry. University of Warwick
Tel: 024 7657 4009 Email: S.Bon@warwick.ac.uk
Web : www.stefanbon.eu

Peter Dunn, Press and Media Relations Manager,
Communications Office, University House
University of Warwick, Coventry CV4 8UW
Tel: 024 76 523708 or 07767 655860
email: p.j.dunn@warwick.ac.uk

PR90 PJD 24th November 2008