Study on the Effect of Tween 60 on Dispersion Property of Water-Soluble Phenol-Formaldehyde Resin

To study the effect of Tween 60 on dispersion property of water-soluble phenol-formaldehyde resin (PFR), the size and zeta potential of PFR/Tween 60 molecule aggregates and the surface tension, turbidity and blocking property of PFR/Tween 60 dispersion were measured. The results of the study show that when Tween 60 concentration in the PFR/Tween 60 solutions is lower than CMC, the dispersion property of PFR solution is not affected by Tween 60 significantly. When Tween 60 concentration in the PFR/Tween 60 solutions is higher than CMC, the Tween 60 molecules, and PFR molecules form complex molecule aggregates in water which affected the dispersion property of PFR solution significantly. The interaction between Tween 60 molecule and PFR molecule in the complex molecule aggregates is stronger than the interaction between PFR molecules in the PFR molecule aggregates.