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Details of Grant 

EPSRC Reference: GR/M58436/01
Title: SENSING FLOC STRUCTURE IN CONCENTRATED COLLOIDAL DISPERSIONS
Principal Investigator: Vincent, Professor B
Other Investigators:
Robins, Dr MM Povey, Professor MJ Robins, Dr M
Researcher Co-Investigators:
Project Partners:
Department: Chemistry
Organisation: University of Bristol
Scheme: Standard Research (Pre-FEC)
Starts: 01 December 1999 Ends: 30 November 2001 Value (£): 94,257
EPSRC Research Topic Classifications:
Complex fluids & soft solids
EPSRC Industrial Sector Classifications:
No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
The project overall will develop an understanding of the scattering of ultrasound from aggregated particular dispersions, which will form the basis of the design of robust, cheap sensors for the chemical, pharmaceutical and food industries. Previous work has shown that ultrasonic spectra change dramatically upon aggregation. Theoreticians are currently trying to interpret these changes. A key requirement is to validate the information from the ultrasonic experiments. The University of Bristol has developed a large rang eof model colloidal systems, and has studied their homo- and heteroaggregation using static and dynamic light scattering (eg to determine fractal dimensions). The use of highly swollen microgel particles allows the extension of the light scattering techniques into concentration regions which may be probed using ultrasonics. The IFR has a highly accurate ultrasonic spectrometer which operates over the frequency range 2-100 MHz. Concurrent theoretical work will be carried out at Leeds (M Povey) to interpret the ultrasonic data. On-line instrumentation will be developed in the late stages with the Nottingham Group (R Challis).
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Organisation Website: http://www.bris.ac.uk