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Zeta potential measurements of fibres. D‐C. Streaming current method
Author(s) -
Chang M. Y.,
Robertson A. A.
Publication year - 1967
Publication title -
the canadian journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.404
H-Index - 67
eISSN - 1939-019X
pISSN - 0008-4034
DOI - 10.1002/cjce.5450450202
Subject(s) - streaming current , zeta potential , current (fluid) , electrolyte , materials science , porosity , capillary action , exponential function , mechanics , reliability (semiconductor) , composite material , chemistry , thermodynamics , mathematical analysis , mathematics , physics , nanotechnology , electrokinetic phenomena , power (physics) , electrode , nanoparticle
Streaming current techniques have been extensively used in measurements of zeta‐potential, ζ, at the solid/liquid interface of capillary systems. In the case of porous, swelling and deformable materials, the application becomes less certain because of the complex geometry of the flow paths and interactions of neighboring electric double layers. The applicability of the equations developed by Goring, Biefer and Mason to papermaking fibres in various electrolytes is examined and found inadequate. An exponential form of the concentration function in the streaming current equation is proposed, I η L/pD = (Aζ/4π) exp(–Bc) , and its reliability in evaluating ζ, is demonstrated. Factors affecting the parameter B are discussed.