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Details of Grant 

EPSRC Reference: GR/R94800/01
Title: FUNDAMENTAL STUDIES OF PARTICLE GENERATION BY FREEZE DRYING
Principal Investigator: Wilson, Professor DI
Other Investigators:
Johns, Professor M
Researcher Co-Investigators:
Project Partners:
Unilever University of Auckland
Department: Chemical Engineering and Biotechnology
Organisation: University of Cambridge
Scheme: Standard Research (Pre-FEC)
Starts: 01 July 2002 Ends: 31 July 2003 Value (£): 78,841
EPSRC Research Topic Classifications:
Particle Technology
EPSRC Industrial Sector Classifications:
Food and Drink Pharmaceuticals and Biotechnology
Manufacturing No relevance to Underpinning Sectors
Related Grants:
Panel History:  
Summary on Grant Application Form
Spray drying is an established technology for the generation of particulates from solutions or suspensions, but it conventionally features a hot gas phase, which is not suitable for certain components or products. Spray freeze crystallisation can yield a fine dispersion of frozen powder with complex microstructures, which can be used to seed subsequent products, or dried to give porous particulates. This project will employ magnetic resonance (MR) imaging techniques, developed at the Magnetic Resonance Research (MRRC) at Cambridge, to investigate fundamental aspects of the spray freezing technology, building on recent work at the Department of Chemical and Materials Engineering at the University of Auckland (NZ). Spray freezing lends itself readily to MR investigations, as the solid and liquid phases can be readily identified by modern fast imaging techniques; other MR techniques will be used to probe the composition and microstructure of the products generated. The results obtained using aqueous solutions will be compared with those optained using video techniques at Auckland, while those obtained for opaque systems will be unique. The proposal seeks funding for the main investigator at Auckland, Jason Hindmarsh, to spend 12 months at the MRRC in Cambridge as a post-doctoral researcher. The spray freezing apparatus will be constructed in Auckland and brought to the UK by Mr. Hindmarsh.
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Organisation Website: http://www.cam.ac.uk