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Details of Grant 

EPSRC Reference: GR/J54130/01
Title: IN-LINE PROCESS RHEOMETRY OF REACTING SYSTEMS BY A NEW WAVE INTERFERENCE TECHNIQUE
Principal Investigator: Williams, Professor R
Other Investigators:
Researcher Co-Investigators:
Project Partners:
Department: Chemical & Biological Process Eng
Organisation: Swansea University
Scheme: Standard Research (Pre-FEC)
Starts: 01 October 1993 Ends: 30 September 1996 Value (£): 100,238
EPSRC Research Topic Classifications:
Rheology
EPSRC Industrial Sector Classifications:
Related Grants:
Panel History:  
Summary on Grant Application Form
The programme will exploit the interferometrical basis of the Virtual Gap Rheometer (VGR) to develop an in-line process rheometer for reacting systems at the gel point and beyond, by continuous measurement of Group- and Phase velocity components (Vg, Vp respectively) of amplitude-modulated shear wavegroups, in real-time. A variable-gap VGR will be constructed to monitor the crosslinking of a polydimethylsiloxane, concentrating on strain sensitivity at the gel point and optimum frequency content of test waveforms for maximum sensitivity. Of key interest will be the technique's ability to determine gelation time and completely characterise the system's rheology at the gel point. The results obtained will be used to optimise design of an inline process instrument with fixed physical gaps and actuating surfaces aligned parallel to sample flow-through in a rectangular measuring cell. Rates of curing and gel development will be monitored in real-time over a range of temperatures and within rapid heating and cooling cycles.
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Organisation Website: http://www.swan.ac.uk