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Surface activity of foam fractions of a calcium lignosulphonate
Author(s) -
Keirstead K. F.,
Caverhill L.,
De Kée D.
Publication year - 1982
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.5450600516
Subject(s) - tensiometer (surface tension) , surface tension , foam fractionation , maximum bubble pressure method , bubble , calcium , materials science , composite material , chemistry , chromatography , pulmonary surfactant , metallurgy , thermodynamics , mechanics , biochemistry , physics
Successive foam fractionation has been used to divide a processed calcium lignosulphonate into tractions differing appreciably in surface activity. Static surface tension has been measured by the de Nouy tensiometer and surface tension aging by the sessile bubble (photographic) method. The effect of concentration on surface tension has been determined. The effect of pH at 1% concentration on dynamic surface tension has been determined on freshly prepared solutions.