Effect of alkali metal cations on adsorption of guar gum onto quartz

摘要: Abstract The effect of cesium, potassium, sodium, and lithium cations on the adsorption natural guar gum onto quartz was investigated. role these ions analyzed in terms their water structure-making or -breaking capabilities. In presence structure makers (Na+, Li+) polymer density did not change compared to levels observed distilled water. However, dilute solutions (0.01 N) structure-breaking (Cs+, K+) significantly increased, with potassium cesium producing same densities polymer. resulting colloidal aggregation/dispersion equilibria quartz–guar system were discussed mechanisms gum–quartz interactions also suggested. Assuming hydrogen bonding be driving mechanism, it proposed that molecules compete for silanol surface sites. Structure-breaking disturb interfacial around particles thus allowing more closely approach interact groups.