Viscosity of Polyelectrolyte Solutions: Experiment and a New Model
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- 作者：Jianyong Yang ; Nan Liu ; Dahong Yu ; Changjun Peng ; Honglai Liu ; Ying Hu ; and Jianwen Jiang
- 刊名：Industrial & Engineering Chemistry Research
- 出版年：2005
- 出版时间：October 12, 2005
- 年：2005
- 卷：44
- 期：21
- 页码：8120 - 8126
- 全文大小：132K
- 年卷期：v.44,no.21(October 12, 2005)
- ISSN：1520-5045
文摘
The viscosity of sodium polyacrylate (NaPAA) and poly(sodium 4-styrenesulfonate) (NaPSS)solutions was experimentally measured with various added salt (NaCl) concentrations at differenttemperatures. With a low salt concentration, the reduced specific viscosity (
rs) exhibits amaximum and then a minimum with decreasing polyelectrolyte concentration (Cp) and divergesas Cp approaches zero. A new statistical mechanics model was developed based on thecombination of Eyring's absolute-rate theory and Jiang's polyelectrolyte model. This model cansatisfactorily correlate the viscosity of NaPAA and NaPSS solutions over the entire range ofadded NaCl concentration and temperature in this study and correctly predict the anomalousconcentration-dependent behavior of rs.
rs) exhibits amaximum and then a minimum with decreasing polyelectrolyte concentration (Cp) and divergesas Cp approaches zero. A new statistical mechanics model was developed based on thecombination of Eyring's absolute-rate theory and Jiang's polyelectrolyte model. This model cansatisfactorily correlate the viscosity of NaPAA and NaPSS solutions over the entire range ofadded NaCl concentration and temperature in this study and correctly predict the anomalousconcentration-dependent behavior of rs.