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<article article-type="research-article" dtd-version="1.3" 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" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.29235/1561-8323-2020-64-3-293-299</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-883</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Набухание гидрогеля на основе полиакриламида в водных растворах низкомолекулярных солей</article-title><trans-title-group xml:lang="en"><trans-title>Swelling of polyacrylamide-based hydrogel in aqueous solutions of low-molecular salts</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Воробьёва</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Vorobieva</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Воробьёва Елена Викторовна – д-р хим. наук, доцент, заведующий лабораторией</p><p>ул. Сурганова, 9/1, 220072, Минск </p></bio><bio xml:lang="en"><p>Vorobieva Elena V. – D. Sc. (Chemistry), Associate professor, Head of the Laboratory</p><p>9/1, Surganov Str., 220072, Minsk </p></bio><email xlink:type="simple">evorobieva@igic.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт общей и неорганической химии Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of General and Inorganic Chemistry of the National Academy of Sciences of Belarus</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2020</year></pub-date><pub-date pub-type="epub"><day>09</day><month>07</month><year>2020</year></pub-date><volume>64</volume><issue>3</issue><fpage>293</fpage><lpage>299</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Воробьёва Е.В., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Воробьёва Е.В.</copyright-holder><copyright-holder xml:lang="en">Vorobieva E.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://doklady.belnauka.by/jour/article/view/883">https://doklady.belnauka.by/jour/article/view/883</self-uri><abstract><p>Изучена кинетика набухания сшитого полиакриламида в зависимости от состава внешнего раствора. Показано, что набухание полимерного геля при переходе от воды к раствору хлорида калия или натрия и обратно резко уменьшается, затем постепенно возрастает. Набухание геля в растворе хлорида натрия выше, чем хлорида калия. В равновесно набухшем геле концентрация солей в фазе геля выше, чем во внешнем растворе, и увеличивается при переходе от хлорида калия к хлориду натрия.</p></abstract><trans-abstract xml:lang="en"><p>The swelling kinetics of cross-linked polyacrylamide was studied depending on the composition of the external solution. It was shown that the polymer gel swelling during the transition from water to a potassium or sodium chloride solution and vice versa sharply decreases, then gradually increases. The swelling of gel in a solution of sodium chloride is higher than that of potassium chloride. In the equilibrium swollen gel, the concentration of salts in the gel phase is higher than in the external solution and increases with the transition from potassium chloride to sodium chloride.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>набухание</kwd><kwd>полимерный гидрогель</kwd><kwd>растворы</kwd><kwd>хлорид натрия</kwd><kwd>хлорид калия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>swelling</kwd><kwd>polymer hydrogel</kwd><kwd>solutions</kwd><kwd>sodium chloride</kwd><kwd>potassium chloride</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Роговина, Л. З. К определению понятия «полимерный гель» / Л. З. Роговина, В. Г. Васильев, Е. Е. Браудо // Высокомолекулярные соединения. Сер. С. – 2008. – Т. 50, № 7. – С. 1397−1406.</mixed-citation><mixed-citation xml:lang="en">Rogovina L. Z., Vasil’ev V. G., Braudo E. E. Definition of the concept of polymer gel. 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