Influence of anions on behavior of cationic polyelectrolyte poly(diallyldimethylammonium chloride) and its copolymer in aqueous solutions

被引：1

作者：

Lezov, A. A. ^{[1
]}

Rogozhin, V. B. ^{[1
]}

Donets, A., V ^{[1
]}

Lezova, A. A. ^{[1
]}

Gubarev, A. S. ^{[1
]}

Vlasov, P. S. ^{[2
]}

Samokhvalova, S. A. ^{[2
]}

Polushina, G. E. ^{[1
]}

Polushin, S. G. ^{[1
]}

Tsvetkov, N., V ^{[1
]}

机构：

[1] St Petersburg State Univ, Dept Mol Biophys & Polymer Phys, Fac Phys, Univ Skaya Nab 7-9, St Petersburg 199034, Russia

[2] St Petersburg State Univ, Dept Macromol Chem, Inst Chem, Univ Skaya Nab 7-9, St Petersburg 199034, Russia

来源：

JOURNAL OF MOLECULAR LIQUIDS | 2022年 / 347卷

基金：

俄罗斯基础研究基金会;

关键词：

Polyelectrolyte; Light scattering; Analytical ultracentrifugation; Bulky ions; Hydration; Copolymer; LIGHT-SCATTERING; DIALLYLDIMETHYLAMMONIUM CHLORIDE; CONFORMATIONAL BEHAVIOR; MOLECULAR-PROPERTIES; IONIC-STRENGTH; VISCOSITY; MACROMOLECULES; COEFFICIENT; DEPENDENCE; DYNAMICS;

D O I：

10.1016/j.molliq.2021.118369

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Physicochemical properties of polyelectrolyte poly(diallyldimethylammonium chloride) (poly (DADMAC)) and the copolymer of DADMAC with zwitterionic monomer 2-(diallyl(methyl)ammonio) acetate (DAMA) containing equimolar amounts of DADMAC and DAMA units were studied in aqueous solutions in the presence of ions of different sizes (Cl, Br, and I). The solutions were investigated by viscometry, analytical ultracentrifugation (AUC), nuclear magnetic resonance (NMR), dynamic (DLS) and static (SLS) light scattering. It was shown that an increase in the halogen ion size facilitated condensation of bulky anions on the polyelectrolyte chain. Ultimately, this resulted in deterioration of the solvent quality and collapse of the poly(DADMAC) coil in aqueous solution in the presence of iodine ions. Introducing DAMA units into the polymer chain exerted a positive effect on solubility of the resulting copolymer (poly (DADMAC-co-DAMA)) in aqueous solutions containing iodine ions. (C) 2021 Elsevier B.V. All rights reserved.

引用

页数：12

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