Abstract:

A new type of hydrophobic association polymer AM-M-BACC/AM was prepared by micellar polymerization, which has a long hydrophobic group up to 18 carbon atoms, and its solution properties were studied. Results show that the reduced viscosity of aqueous solution of the copolymer has little change in the range of 20~60℃,and the critical concentration of this solution is very obvious. The viscosity increases with salt concentration under various polymer concentrations, but it raises more under the condition of lower of lower polymer concentrations. The order of the increments of the reduced viscosity for different salt is: MgCl₂>CaCl₂>NaCl. In addition, the influence of the type and concentration of salt on the interaction of macromolecules in solution has been investigated preliminarily on the basis of Huggins constant.

Key words: hydrophobic association, water soluble polymer, salt resistively, laboratory test