<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Доклады Академии наук</journal-id><journal-title-group><journal-title xml:lang="en">Доклады Академии наук</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Академии наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-5652</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">18590</article-id><article-id pub-id-type="doi">10.31857/S0869-56524893262-266</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Physical chemistry</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Физическая химия</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Electrostatic long-range interactions in macromolecules of flexible-chain linear polyelectrolytes with low charge density in aqueous solutions of different ionic strength</article-title><trans-title-group xml:lang="ru"><trans-title>Электростатическое дальнодействие в макромолекулах гибкоцепных линейных полиэлектролитов с малой плотностью заряда в водных растворах разной ионной силы</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Pavlov</surname><given-names>G. M.</given-names></name><name xml:lang="ru"><surname>Павлов</surname><given-names>Г. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>oljaspb552@gmail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Dommes</surname><given-names>O. A.</given-names></name><name xml:lang="ru"><surname>Доммес</surname><given-names>О. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>oljaspb552@gmail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Okatova</surname><given-names>O. V.</given-names></name><name xml:lang="ru"><surname>Окатова</surname><given-names>О. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>oljaspb552@gmail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Gavrilova</surname><given-names>I. I.</given-names></name><name xml:lang="ru"><surname>Гаврилова</surname><given-names>И. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>oljaspb552@gmail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Panarin</surname><given-names>E. F.</given-names></name><name xml:lang="ru"><surname>Панарин</surname><given-names>Е. Ф.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Corresponding Member of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>Член-корреспондент РАН</p></bio><email>oljaspb552@gmail.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Institute of Macromolecular Compounds of the Russian Academy of Sciences</institution></aff><aff><institution xml:lang="ru">Институт высокомолекулярных соединений Российской академии наук</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Peter the Great St.Petersburg Polytechnic University</institution></aff><aff><institution xml:lang="ru">"Санкт-Петербургский политехнический университет Петра Великого"</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-11-29" publication-format="electronic"><day>29</day><month>11</month><year>2019</year></pub-date><volume>489</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>262</fpage><lpage>266</lpage><history><date date-type="received" iso-8601-date="2019-12-09"><day>09</day><month>12</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-12-09"><day>09</day><month>12</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Russian academy of sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Российская академия наук</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Russian academy of sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-5652/article/view/18590">https://journals.eco-vector.com/0869-5652/article/view/18590</self-uri><abstract xml:lang="en"><p>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.</p></abstract><trans-abstract xml:lang="ru"><p>Методами молекулярной гидродинамики (поступательная диффузия, скоростная седиментация, вискозиметрия) исследованы сополимеры N‑метил-N‑винилацетамида и N‑метил-N‑виниламина гидрохлорида со средним содержанием заряженных групп (4,4 ± 0,2) мол.% в водном 0,2 M растворе NaCl. Получены скейлинговые соотношения Куна-Марка-Хаувинка-Сакурады. Вязкое течение изучено в максимально широком интервале ионных сил водных растворов, от бессолевых до 6 М NaCl. Полученные результаты сопоставлены с данными, полученными ранее для нейтрального поли-N‑метил-N‑винилацетамида. Впервые экспериментально показано, что характер зависимости характеристической вязкости от молекулярной массы сополимера такого состава в растворах минимальной ионной силы типичен для цепей, проявляющих внутрицепные объёмные взаимодействия, т.е. электростатическое дальнодействие.</p></trans-abstract><kwd-group xml:lang="en"><kwd>polyelectrolites</kwd><kwd>linear charge density</kwd><kwd>ionic strength</kwd><kwd>molecular hydrodynamics</kwd><kwd>electrostatic long-range interaction</kwd><kwd>scaling relations</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>полиэлектролиты</kwd><kwd>линейная плотность заряда</kwd><kwd>ионная сила</kwd><kwd>электростатическое дальнодействие</kwd><kwd>молекулярная гидродинамика</kwd><kwd>скейлинговые соотношения</kwd></kwd-group><funding-group/></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Muthukumar M. 50th Anniversary Perspective: A Perspective on Polyelectrolyte Solutions // Macromolecules. 2017. V. 50. P. 9528-9560.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>Dautzenberg H., Jaeger W., Koetz J., Philipp B., Seidel C., Stscherbina D. Polyelectrolytes: Formation, Characterization, and Application. Munich: Hanser-Gardner Publ., 1994.</mixed-citation></ref><ref id="B3"><label>3.</label><mixed-citation>Odijk T. Polyelectrolytes Near the Rod Limit // J. Polym. Sci.: Polym. Phys. Ed. 1977. V. 15. № 3. P. 477-483.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Skolnick J., Fixman M. Electrostatic Persistence Length of a Wormlike Polyelectrolyte // Macromolecules. 1977. V. 10. № 5. P. 944-948.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Gubarev A.S., Carrillo J.M.Y., Dobrynin A.V. Scale-Dependent Electrostatic Stiffening in Biopolymers // Macromolecules. 2009. V. 42. № 15. P. 5851-5860.</mixed-citation></ref><ref id="B6"><label>6.</label><mixed-citation>Staudinger H. Nobel Lecture (1953): Macromolecular Chemistry. In: Nobel Lectures, Chemistry 1942-1962. Amsterdam: Elsevier, 1964. P. 397-419.</mixed-citation></ref><ref id="B7"><label>7.</label><mixed-citation>Kraemer E.O. Molecular Weights of Celluloses and Cellulose Derivates // Ind. Eng. Chem. 1938. V. 30. № 10. P. 1200-1203.</mixed-citation></ref><ref id="B8"><label>8.</label><mixed-citation>Pavlov G.M., Okatova O.V., Mikhailova A.V., et al. Conformational Parameters of Poly(N methyl-N vinylacetamide) Molecules through the Hydrodynamic Studies // Macromol. Biosci. 2010. V. 10. P. 790.</mixed-citation></ref><ref id="B9"><label>9.</label><mixed-citation>Pavlov G.M., Okatova O.V., Gubarev A.S., et al. Strong Linear Polyelectrolytes in Solutions of Extreme Concentrations of One-One Valent Salt. Hydrodynamic Study // Macromolecules. 2014. V. 47. № 8. P. 2748.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Flory P.J. Principles of Polymer Chemistry. N.Y.: Cornell Univ. Press, 1953.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Gray G., Bloomfield V., Hearst J. Sedimentation Coefficients of Linear and Cyclic Wormlike Coils with Excluded-Volume Effects // J. Chem. Phys. 1967. V. 46. № 4. P. 1493-1498.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Pavlov G.M. Size and Average Density Spectra of Macromolecules Obtained from Hydrodynamic Data // Eur. Phys. J. E: Soft Matter Biol. Phys. 2007. V. 22. P. 171-180.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Pavlov G.M., Panarin E.F., Korneeva E.V., et al. Hydrodynamic Properties of Poly(1-vinyl-2-pyrrolidone) Molecules in Dilute Solution // Makromol. Chem. 1990. V. 191. № 12. P. 2889-2899.</mixed-citation></ref></ref-list></back></article>
