Email this article Electrostatic long-range interactions in macromolecules of flexible-chain linear polyelectrolytes with low charge density in aqueous solutions of different ionic strength
- Authors: Pavlov G.M.1, Dommes O.A.1, Okatova O.V.1, Gavrilova I.I.1, Panarin E.F.1,2
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Affiliations:
- Institute of Macromolecular Compounds of the Russian Academy of Sciences
- Peter the Great St.Petersburg Polytechnic University
- Issue: Vol 489, No 3 (2019)
- Pages: 262-266
- Section: Physical chemistry
- URL: https://journals.eco-vector.com/0869-5652/article/view/18590
- DOI: https://doi.org/10.31857/S0869-56524893262-266
- ID: 18590
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Abstract
The methods of molecular hydrodynamics (translational diffusion, velocity sedimentation, viscometry) have been used to study copolymers of N‑methyl-N‑vinylacetamide and N‑methyl-N‑vinylamine hydrochloride with an average content of charged groups (4,4 ± 0,2) mol.% in aqueous 0,2 M NaCl solution. Kuhn-Mark-Houwink-Sakurada scaling relations were obtained. Viscous flow was studied in the widest possible range of ionic strengths of aqueous solutions, from salt-free to 6 M NaCl. The data got were compared with those previously obtained for neutral poly-N‑methyl-N‑vinylacetamide. It was firstly shown experimentally that the character of the dependence of the intrinsic viscosity on the molecular weight of a copolymer of such composition in solutions of minimal ionic strength is typical for the chains exhibiting intrachain volume effects, i.e. electrostatic long-range interactions.
About the authors
G. M. Pavlov
Institute of Macromolecular Compounds of the Russian Academy of Sciences
Email: oljaspb552@gmail.ru
Russian Federation, 31, Bolshoy prospect, St-Petersburg 199004
O. A. Dommes
Institute of Macromolecular Compounds of the Russian Academy of Sciences
Author for correspondence.
Email: oljaspb552@gmail.ru
Russian Federation, 31, Bolshoy prospect, St-Petersburg 199004
O. V. Okatova
Institute of Macromolecular Compounds of the Russian Academy of Sciences
Email: oljaspb552@gmail.ru
Russian Federation, 31, Bolshoy prospect, St-Petersburg 199004
I. I. Gavrilova
Institute of Macromolecular Compounds of the Russian Academy of Sciences
Email: oljaspb552@gmail.ru
Russian Federation, 31, Bolshoy prospect, St-Petersburg 199004
E. F. Panarin
Institute of Macromolecular Compounds of the Russian Academy of Sciences; Peter the Great St.Petersburg Polytechnic University
Email: oljaspb552@gmail.ru
Corresponding Member of the Russian Academy of Sciences
Russian Federation, 31, Bolshoy prospect, St-Petersburg 199004; 29, Polytechnitcheskaya street, St.-Petersburg, 195251References
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