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Citation: LIU Li-Hua, GONG Zhu-Qing, HUANG Jian, ZHENG Ya-Jie. Viscosity Behavior of Poly(dimethyldiallylammonium chloride) in Polyferric Sulfate[J]. Chinese Journal of Applied Chemistry, ;2004, 21(10): 1029-1033. shu

Viscosity Behavior of Poly(dimethyldiallylammonium chloride) in Polyferric Sulfate

1.
a Institute of Metallurgical Physical Chemistry, Central South University, Changsha 410083;
2.
b College of Chemistryand Chemical Engineering, Central South University, Changsha 410083

Corresponding author: LIU Li-Hua,
Received Date: 1 December 2003
Available Online: 6 March 2004
Fund Project:

The viscosity behavior of poly(dimethyldiallylammonium chloride)(PDMDAAC) in polyferric sulfate solutions(PFS) have been investigated as a function of interactions between PDMDAAC and PFS by FT-IR, SEM and X-ray diffractometry. The results show that the PDMDAAC chains adopt stretching conformation in PFS solution because of their special pyrrole ring structure and become larger in size due to stronger electrostatic repulsion of the polyferric cations. The viscosity behavior of PDMDAAC in PFS solution is less affected by the total iron concentration and basicity of the PFS solution, but affected by the concentration of PDMDAAC in PFS. The PDMDAAC chains present physical entanglement when the concentration of PDMDAAC is above 2.0 g/L, stretch in the concentration range of 0.8~2.0 g/L, and behave as a polyelectrolyte at below 0.8 g/L. The FT-IR, SEM and XRD results indicate that PDMDAAC interacted with the main phase Fe_4.67(SO₄)₆(OH)₂·20H₂O of PFS.
- poly(dimethyldiallylammonium chloride),
- polyferric sulfate,
- polyelectrolyte effect
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