|
|||||
|
|
Electrostimulated shift of the precipitation temperature of aqueous polyzwitterionic solutions |
|
| Authors: | George Georgiev Anna Tzoneva Lyudmil Lyutov Stefko Iliev Irena Kamenova Ventseslava Georgieva Elena Kamenska Andreas Bund |
| Institution: | 1. Faculty of Chemistry, University of Sofia, 1, J. Bourchier Avenue, 1164 Sofia, Bulgaria;2. Institute of Physical Chemistry and Electrochemistry, Dresden University of Technology, D-01062 Dresden, Germany |
| Abstract: | The precipitation temperature (Tpr) value of aqueous poly(dimethylamino-ethoxyacryloyl-propylsulphonate) (PDMAPS) solutions decreases with the rise of electric field intensity both in the absence and in the presence of a low molecular salt. This electrostimulated Tpr shift is explained qualitatively by means of the model taking into account both the dominating intermacromolecular dipole-dipole interaction and the dipole cluster formation. |
| Keywords: | phase separation “sol-gel” transition polyzwitterion |