Molecular hydrodynamics methods (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 relationships have been obtained. Viscous flow has been studied in the widest possible range of ionic strengths of aqueous solutions, from salt-free to 6 M NaCl. The data have been compared with those previously obtained for neutral poly-N-methyl-N-vinylacetamide. It has been shown experimentally for the first time that the character of the dependence of the intrinsic viscosity on the molecular mass of a copolymer of such a composition in solutions of minimal ionic strength is typical of the chains exhibiting intrachain volume effects, i.e. electrostatic long-range interactions.

中文翻译：

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低电荷密度柔性链状线性聚电解质高分子在不同离子强度水溶液中的长程静电相互作用

分子流体动力学方法（平移扩散、速度沉降、粘度测定）已用于研究 N-甲基-N-乙烯基乙酰胺和 N-甲基-N-乙烯基胺盐酸盐的共聚物，其中带电基团的平均含量为 (4.4 ± 0.2) mol % 0.2 M NaCl 水溶液。已获得 Kuhn-Mark-Houwink-Sakurada 标度关系。粘性流动已在从无盐到 6 M NaCl 的水溶液的尽可能广泛的离子强度范围内进行了研究。已将这些数据与先前获得的中性聚-N-甲基-N-乙烯基乙酰胺的数据进行了比较。