Effect of Salt on the Viscosity and Microstructure of Hydrophobically Associating Water-Soluble Polymer
The effects of Na+, Ca2+, and Mg2+ on hydrophobically associating water-soluble polymers (HAWP) were studied in this paper.Their decreased viscosity in aqueous solution at different salt concentrations were measured and the corresponding microstructure by Atomic Force Microscopy (AFM) were determined. The results show that the destructive microstrucure was the intrinsic reason for the decresed viscosity. Among the three salt aqueous solutins, CaCl2 has the highest strong destructive capability to the microstucute of HAWP.
Weiguo Pan, Jianxing Ren and Yongguang Li
R. zhang et al., "Effect of Salt on the Viscosity and Microstructure of Hydrophobically Associating Water-Soluble Polymer", Advanced Materials Research, Vols. 347-353, pp. 1673-1677, 2012