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Three kinds of cationic acrylamide copolymer with different branch degree were prepared controlling the dosage of N, N’-methylenebisacrylamide. The physical characteristics of the branch-degree- modified copolymers were analyzed by intrinsic viscosity and charge density. The branch degree measurements were investigated by applying the colloidal titration phenomena using a spectrophotometer and comparison with the cationic regain measurement method. The results showed that the absorbance behaviors of spectrophotometer were distinctively different with the branch degree of copolymers. Also, the branch degree determinations and molecular structure estimations of the copolymers were numerically measured by applying the titration phenomena using a spectrophotometer. Finally, three kinds of branch-degree-modified copolymers were applied to flocculation test using arbocel micro pulp for the determination of flocculation behavior by different morphology of cationic acrylamide copolymers.

Effect of Branch Degree of Cationic Acrylamide Copolymers on Flocculation Properties