Title: Electrical-conductivity SFM study of an ultrafiltration membrane
Abstract: A method for local investigation of ultrafiltration membrane pore networks has been developed in order to complement bulk measurements and calculations. An membrane (200 nm) pore network was filled with electrodeposited nickel. Membranes were analysed simultaneously with normal scanning force microscopy (SFM) and electrical-conductivity SFM. Cantilevers coated with cm diamond were used to map both normal force and conductivity. Conductivity images show two kinds of pores: bright pores with diameters of and grey pores with diameters of , depending on the depth of the nickel tubes. The average pore diameter measured from the normal SFM images is , and the ratio of the conductive pores to total number of pores is 49.8%. Preferential flow paths can be established from this technique.
Publication Year: 1997
Publication Date: 1997-03-01
Language: en
Type: article
Indexed In: ['crossref']
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Cited By Count: 10
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