Proceedings of the Membrane Society of Korea Conference (한국막학회:학술대회논문집)
- 2001.10a
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- Pages.39-50
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- 2001
A Novel Technoque for Characterization of Membranes
- Webber, Ronald (Porius Materials, Inc) ;
- Jena, Akshaya (Porius Materials, Inc) ;
- Gupta, Krishna (Porius Materials, Inc)
- Published : 2001.10.01
Abstract
The performance of membranes is governed their pore struture. Pore structures of porous materials can be determined by a number of techniques. However, The novel technique, capillary folw porometry has a number of advantages. In this technique, the sample is brought in contact with a liquid that fills the pores in the membrane spontaneously. Gas under pressure is used to force the liquid from the pores and increase gas flow. Gas flow rate measured as a function of gas pressure in wet and dry samples yield data on the largest pore size, the mean flow pore size, flow distribution and permeability. Pore characteristics of a number of membranes were measured using this technique. This technique did not require the use of any toxic material and the pressure employed was low. Capillary flow porometry is a suitable technique for measurement of the pore structure of many membranes.
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