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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">10.29235/1561-8323-2020-64-3-300-307</article-id><article-id custom-type="elpub" pub-id-type="custom">dan-884</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>Кислотно-основные свойства волокнистых полиамфолитов с аминодиацетатными группами</article-title><trans-title-group xml:lang="en"><trans-title>Acid-base properties of fibrous polyampholytes with aminodiacetic functional groups</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>Косандрович</surname><given-names>Е. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosandrovich</surname><given-names>E. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Косандрович Евгений Генрихович – канд. хим. наук, доцент, заведующий лабораторией</p><p>ул. Сурганова, 13, 220072, Минск </p></bio><bio xml:lang="en"><p>Kasandrovich Evgenii G. – Ph. D. (Chemistry), Associate Professor, Head of the Laboratory</p><p>13, Surganov Str., 220072, Minsk </p></bio><email xlink:type="simple">kosandrovich@ifoch.bas-net.by</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Нестеронок</surname><given-names>П. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Nesteronok</surname><given-names>P. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Нестеронок Петр Викторович – канд. хим. наук, ст. науч. сотрудник</p><p>ул. Сурганова, 13, 220072, Минск </p></bio><bio xml:lang="en"><p>Nesteronok Petr V. - Ph. D. (Chemistry), Senior researcher</p><p>13, Surganov Str., 220072, Minsk </p></bio><email xlink:type="simple">petr.nester@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шаченкова</surname><given-names>Л. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Shachenkova</surname><given-names>L. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шаченкова Лариса Николаевна – канд. хим. наук, ст. науч. сотрудник</p><p>ул. Сурганова, 13, 220072, Минск </p></bio><bio xml:lang="en"><p>Shachenkova Larisa N. - Ph. D. (Chemistry), Senior researcher</p><p>13, Surganov Str., 220072, Minsk </p></bio><email xlink:type="simple">sln13102005@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Солдатов</surname><given-names>В. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Soldatov</surname><given-names>V. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Солдатов Владимир Сергеевич – академик, д-р хим. наук, профессор, гл. науч. сотрудник</p><p>ул. Сурганова, 13, 220072, Минск </p></bio><bio xml:lang="en"><p>Soldatov Vladimir S. - Academician, D. Sc. (Chemistry), Professor, Chief researcher</p><p>13, Surganov Str., 220072, Minsk </p></bio><email xlink:type="simple">soldatov@ifoch.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 физико-органической химии Национальной академии наук Беларуси</institution></aff><aff xml:lang="en"><institution>Institute of Physical Organic 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>300</fpage><lpage>307</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Косандрович Е.Г., Нестеронок П.В., Шаченкова Л.Н., Солдатов В.С., 2020</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="ru">Косандрович Е.Г., Нестеронок П.В., Шаченкова Л.Н., Солдатов В.С.</copyright-holder><copyright-holder xml:lang="en">Kosandrovich E.G., Nesteronok P.V., Shachenkova L.N., Soldatov V.S.</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/884">https://doklady.belnauka.by/jour/article/view/884</self-uri><abstract><p>Аминированием полиакрилонитрильного волокна Нитрон С полиаминами с числом повторяющихся звеньев 1–5 и их последующим алкилированием монохлоруксусной кислотой получены полиамфолиты, содержащие в своей структуре аминодиацетатные группы. Получены экспериментальные результаты потенциометрического титрования и сорбции противоионов поддерживающего электролита (kСl) синтезированными ионитами, которые позволили определить параметры кислотности функциональных групп: в полиамфолитах обнаруживается присутствие четырех видов катионообменных и двух видов анионообменных групп, установлена последовательность их нейтрализации в процессе титрования.</p></abstract><trans-abstract xml:lang="en"><p>Polyampholytes, containing aminodiacetic functional groups, on the base of polyacrylonitrile fiber Nitron C were obtained by the amination reaction of nitrile groups with polyamines (number of repeating units from 1 to 5) and subsequent alkylation with monochloroacetic acid. The experimental results of potentiometric titration and sorption of supporting electrolyte (kCl) ions by synthesized ion exchangers were obtained, which made it possible to determine the acidity parameters of functional groups: the presence of four types of cation exchange and two types of anion exchange groups was detected in polyampholytes, the sequence of their neutralization in the titration process was established.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>волокнистый ионит</kwd><kwd>сорбция</kwd><kwd>потенциометрическое титрование</kwd><kwd>параметры кислотности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>fibrous ion exchanger</kwd><kwd>sorption</kwd><kwd>potentiometric titration</kwd><kwd>acidity parameters</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">Орловская, Л. А. 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