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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">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2025-91-3-11-15</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-2421</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>АНАЛИЗ ВЕЩЕСТВА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>SUBSTANCES ANALYSIS</subject></subj-group></article-categories><title-group><article-title>Индикатор на текстильной основе для кислотно-основного титрования</article-title><trans-title-group xml:lang="en"><trans-title>Textile-based indicator for acid-base titration</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>Ефанов</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Efanov</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Сергей Анатольевич Ефанов</p><p>305000, Курск, ул. Радищева, д. 33</p></bio><bio xml:lang="en"><p>Sergey A. Efanov</p><p>33, ul. Radishcheva, Kursk, 305000; 1, Malaya Kaluzhskaya ul., Moscow, 119071</p></bio><email xlink:type="simple">efanoff.sergey2016@yandex.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>Кудрявцева</surname><given-names>Т. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Kudryavtseva</surname><given-names>T. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Татьяна Николаевна Кудрявцева</p><p>305000, Курск, ул. Радищева, д. 33</p></bio><bio xml:lang="en"><p>Tatiana N. Kudryavtseva</p><p>33, ul. Radishcheva, Kursk, 305000</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Грехнева</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Grekhneva</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Владимировна Грехнева</p><p>305000, Курск, ул. Радищева, д. 33</p></bio><bio xml:lang="en"><p>Elena V. Grekhneva</p><p>33, ul. Radishcheva, Kursk, 305000</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Дорофеева</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Dorofeeva</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Елена Анатольевна Дорофеева</p><p>305000, Курск, ул. Радищева, д. 33</p></bio><bio xml:lang="en"><p>Elena A. Dorofeeva</p><p>33, ul. Radishcheva, Kursk, 305000</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Курский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kursk State University; A.N. Kosygin Russian State University (Technology. Design. Art)</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Курский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Kursk State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>20</day><month>03</month><year>2025</year></pub-date><volume>91</volume><issue>3</issue><fpage>11</fpage><lpage>15</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ефанов С.А., Кудрявцева Т.Н., Грехнева Е.В., Дорофеева Е.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Ефанов С.А., Кудрявцева Т.Н., Грехнева Е.В., Дорофеева Е.А.</copyright-holder><copyright-holder xml:lang="en">Efanov S.A., Kudryavtseva T.N., Grekhneva E.V., Dorofeeva E.A.</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://www.zldm.ru/jour/article/view/2421">https://www.zldm.ru/jour/article/view/2421</self-uri><abstract><p>Путем функционализации хлопчатобумажной ткани галохромными дисазопроизводными 4,4’-диаминостильбен-2,2’-дисульфокислоты по технологии прямого крашения получены текстильные галохромные материалы, которые использовали в качестве индикаторов для кислотно-основного титрования. Прямоугольные фрагменты полученного материала размером 20 на 20 мм помещали непосредственно в титруемый раствор. Галохромный краситель локализован в пределах фрагмента ткани, что значительно облегчает визуальную индикацию конечной точки титрования. Интервал изменения окраски и скорость ее изменения изучены в процессе потенциометрического титрования гидроксида натрия, гидрокарбоната натрия и водопроводной воды. Апробация галохромного текстильного материала в качестве индикатора для кислотно-основного титрования была проведена на примере определения щелочности воды. Правильность результатов подтверждена методом «введено – найдено». Галохромный сенсорный материал характеризуется высокой скоростью изменения окраски. Изменение цвета материала во всех случаях визуально наблюдается в пределах скачка на кривой титрования. Данные, полученные при определении щелочности воды с различными индикаторами, хорошо согласуются между собой. Разработанный материал можно использовать в системах бесконтактного контроля кислотности среды через прозрачную стенку в качестве альтернативы флуоресцентным сенсорам.</p></abstract><trans-abstract xml:lang="en"><p>In the present work, textile halochromic materials were obtained, which were tested as indicators of acid-base titration. Textile materials were obtained by functionalization of cotton fabric with halochromic disazo derivatives of 4,4’-diaminostilbene-2,2’-disulfonic acid using direct dyeing technology. Rectangular fragments of halochromic textile material, 20 by 20 mm in size, were placed directly into the titrated solution. The range of color change and the rate of its change were studied in the process of potentiometric titration of sodium hydroxide, sodium bicarbonate and tap water. Testing of halochromic textile material as an indicator of acid-base titration was carried out using the example of determining the acidity of water. The correctness of the results was determined using the added-found method. The halochromic sensor material is characterized by a high rate of color change. The color change of the material is visually observed in all cases within the jump on the titration curve. The data obtained when determining the alkalinity of water with various indicators are in good agreement with each other. When assessing the correctness of the results using the recovery test, the degree of discovery close to 100 % was obtained. When using such an indicator, the halochromic dye is localized within the tissue fragment, which significantly facilitates the fixation of the end point of titration. The use of the developed material can be relevant in contactless control systems for the acidity of the medium through a transparent wall as an alternative to fluorescent sensors.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>4</kwd><kwd>4’-диаминостильбен-2</kwd><kwd>2’-дисульфокислота</kwd><kwd>сенсорный материал</kwd><kwd>кислотно-основное титрование</kwd></kwd-group><kwd-group xml:lang="en"><kwd>4</kwd><kwd>4’-diaminostilbene-2</kwd><kwd>2’-disulfonic acid</kwd><kwd>sensory material</kwd><kwd>acid-base titration</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">Lianyun L., Huijuan Y., Huaqin Y., Feng G. Influence of the Concentration of Indicator on acid-base titration / Univ. Chem. 2015. Vol. 30. No. 6. P. 79 – 82. DOI: 10.3866/pku.dxhx20150679</mixed-citation><mixed-citation xml:lang="en">Lianyun L., Huijuan Y., Huaqin Y., Feng G. 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DOI: 10.1134/S1070427223030023</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
