Electrostatic measurements on lactose-glucose mixtures



: Murtomaa M, Laine E

Publisher: ELSEVIER SCIENCE BV

: 2000

 Journal of Electrostatics

: JOURNAL OF ELECTROSTATICS

: J ELECTROSTAT

: 48

: 2

: 155

: 162

: 8

: 0304-3886

DOI: https://doi.org/10.1016/S0304-3886(99)00063-7


This paper presents the results of an experimental study on electrostatic behavior of lactose and glucose which are commonly used in the pharmaceutical industry as additives. Resistivities and frictional charging of samples with different proportions of lactose and glucose were measured. Powder samples were charged by sliding them down into the Faraday's cup via a pipe. Resistivity was found to follow a linear relationship with the concentration but the nature of frictional charging changed considerably when mixtures were charged instead of pure additives. Both pure additives charged positively when slid into the Faraday's cup via a glass pipe but some mixtures became negatively charged due to powder-powder contacts within the flow and near the pipe surface. (C) 2000 Elsevier Science B.V. All rights reserved.



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