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Citation: Zhao Feng, Du Yu-Kou, Li Xing-Chang, Tang Ji-An, Yang Ping. Study on Viscoelastic Properties of Partially Hydrolyzed Polyacrylamide Solution[J]. Acta Physico-Chimica Sinica, ;2004, 20(11): 1385-1388. doi: 10.3866/PKU.WHXB20041120 shu

Study on Viscoelastic Properties of Partially Hydrolyzed Polyacrylamide Solution

1.
Department of Chemistry and Chemical Engineering, Suzhou University, Suzhou　215006; CAS Key Laboratory of Colloid and Interface Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing　100080

Received Date: 11 May 2004
Available Online: 15 November 2004

In this paper, the viscoelastic properties of partially hydrolyzed polyacrylamide(HPAM) solution were investigated with a cone-and-plate measuring system. Results show that the existence of viscoelastic structure in HPAM solution can be detected quite sensitively by the apparatus. Meanwhile, we also obtained the relationship between the elastic component and the viscous component. It is shown that there exists a maximum value corresponding to the elastic component of solution at the HPAM concentration range of 0.1～0.4 g·L－1. At shear rate ṝ=0.36 s－1, high molecular weight hydrolyzed polyacrylamide solution has apparent viscoelastic properties. With the addition of salts, viscoelastic properties of HPAM solution decrease. Moreover, the network structures in HPAM solution are destroyed at higher salt concentration, and the elastic behaviors vanish. For PAAM(polyacrylamide) solution, viscoelastic properties weren′t observed at the range of 0.36～1.36 s－1. A weak viscoelasticity was observed only when ṝ ≥1.65 s－1.
- Hydrolyzed polyacrylamide(HPAM);Elastic component;Viscous component;Viscoelastic properties structure
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