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RHEOLOGICAL PROPERTIES AND APPLICATIONS OF MESQUITE TREE (PROSOPIS JULIFLORA) GUM. 3. THE INFLUENCE OF MESQUITE GUM OH THE INTERFACIAL TENSION BETWEEN OIL AND WATER

1981; Taylor & Francis; Volume: 2; Issue: 4 Linguagem: Inglês

10.1080/01932698108943919

1532-2351

E.J. Vernon‐Carter, P. Sherman,

Lignin and Wood Chemistry

Abstract The influence of mesquite gum on the interfacial tension between liquid paraffin and distilled water has been studied as a function of gum concentration, pH, and added NaCl or CaCl2. The time dependence of the reduction in interfacial tension was influenced by all three variables. Diffusion to the oil-water interface was the dominant factor in the initial decrease of interfacial tension when low mesquite gum concentrations were used. Reconformation of molecules adsorbed at the oil-water interface controlled the reduction in interfacial tension at longer times when using more concentrated gum solutions.