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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">atu</journal-id><journal-title-group><journal-title xml:lang="ru">Вестник Алматинского технологического университета</journal-title><trans-title-group xml:lang="en"><trans-title>The Journal of Almaty Technological University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2304-568X</issn><issn pub-type="epub">2710-0839</issn><publisher><publisher-name>АО "АТУ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.48184/2304-568X-2026-3-241-251</article-id><article-id custom-type="elpub" pub-id-type="custom">atu-2863</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>ТЕХНОЛОГИЯ ТЕКСТИЛЯ И ОДЕЖДЫ, ДИЗАЙН</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TEXTILE AND CLOTHING TECHNOLOGY, DESIGN</subject></subj-group></article-categories><title-group><article-title>Сравнительный анализ изменений молекулярной структуры кератина шерсти после окрашивания</article-title><trans-title-group xml:lang="en"><trans-title>Comparative analysis of changes in the molecular structure of wool keratin after dyeing</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-7208-8408</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мынбатырова</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Myngbatyrova</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>160012, г. Шымкент, пр. Тауке хана, 5</p></bio><bio xml:lang="en"><p>160012, Shymkent, Tauke khan Avenue,5</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-2645-1357</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Мирзамуратова</surname><given-names>Р. Ш.</given-names></name><name name-style="western" xml:lang="en"><surname>Mirzamuratova</surname><given-names>R. Sh.</given-names></name></name-alternatives><bio xml:lang="ru"><p>160012, г. Шымкент, пр. Тауке хана, 5</p></bio><bio xml:lang="en"><p>160012, Shymkent, Tauke khan Avenue,5</p></bio><email xlink:type="simple">era05.05@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Южно-Казахстанский университет им.  М.Ауэзова</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>M. Auezov South Kazakhstan University</institution><country>Kazakhstan</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Южно-Казахстанский университет им. М.Ауэзова</institution><country>Казахстан</country></aff><aff xml:lang="en"><institution>M. Auezov South Kazakhstan University</institution><country>Kazakhstan</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>30</day><month>09</month><year>2026</year></pub-date><volume>153</volume><issue>3</issue><fpage>241</fpage><lpage>251</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Мынбатырова Л.А., Мирзамуратова Р.Ш., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Мынбатырова Л.А., Мирзамуратова Р.Ш.</copyright-holder><copyright-holder xml:lang="en">Myngbatyrova L.A., Mirzamuratova R.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://www.vestnik-atu.kz/jour/article/view/2863">https://www.vestnik-atu.kz/jour/article/view/2863</self-uri><abstract><p>В статье представлен сравнительный анализ структурных изменений натуральной и окрашенной шерсти методом инфракрасной Фурье-спектроскопии. В качестве объектов исследования использованы образцы неокрашенной белой и коричневой шерсти, а также шерсть, окрашенная розовым и бледноголубым красителями. Целью работы являлась оценка влияния процесса окрашивания на вторичную структуру α-кератина и состояние дисульфидных связей. Установлено, что для неокрашенных образцов характерна сохранённая α-спиральная конформация кератина, что подтверждается положением полосы Amide I в диапазоне 1631–1643 см⁻¹ и наличием устойчивых S–S связей в области 528–561 см⁻¹. Существенных различий между белой и коричневой шерстью не выявлено. После окрашивания наблюдается смещение полосы Amide I до 1625,99 см⁻¹, что свидетельствует о частичном изменении кератиновой структуры. При этом розовый краситель оказывает умеренное воздействие, тогда как бледно-голубой вызывает выраженные структурные изменения, сопровождающиеся окислением дисульфидных связей и появлением полосы сульфоновой кислоты при 1055 см⁻¹. Результаты исследования подтверждают, что химическая природа красителя определяет степень деградации кератиновой матрицы. Метод ИК-Фурье спектроскопии может быть рекомендован для контроля структурной целостности шерстяных волокон при технологической обработке.</p></abstract><trans-abstract xml:lang="en"><p>The article presents a comparative analysis of structural changes in natural and dyed wool using Fouriertransform infrared spectroscopy (FTIR). The study objects included samples of undyed white and brown wool, as well as wool dyed with pink and pale blue dyes. The aim of the work was to evaluate the effect of the dyeing process on the secondary structure of α-keratin and the state of disulfide bonds. It was found that the undyed samples are characterized by a preserved α-helical conformation of keratin, which is confirmed by the position of the Amide I band in the range of 1631–1643 cm⁻¹ and the presence of stable S–S bonds in the region of 528– 561 cm⁻¹. No significant differences were found between white and brown wool. After dyeing, a shift of the Amide I band to 1625.99 cm⁻¹ is observed, indicating a partial change in the keratin structure. In this case, the pink dye has a moderate effect, while the pale blue dye causes pronounced structural changes, accompanied by oxidation of disulfide bonds and the appearance of a sulfonic acid band at 1055 cm⁻¹. The research results confirm that the chemical nature of the dye determines the degree of degradation of the keratin matrix. The FTIR spectroscopy method can be recommended for monitoring the structural integrity of wool fibers during technological processing.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>шерстяные волокна</kwd><kwd>окрашенная шерсть</kwd><kwd>неокрашенная шерсть</kwd><kwd>кератин</kwd><kwd>структура шерсти</kwd><kwd>ИК-спектроскопия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>wool fibers</kwd><kwd>dyed wool</kwd><kwd>undyed wool</kwd><kwd>keratin</kwd><kwd>wool structure</kwd><kwd>FTIR spectroscopy</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">M. Feughelman Mechanical properties and structure of alpha-keratin fibers. Journal of Applied Polymer Science, 2002, 83(3): 489–507.</mixed-citation><mixed-citation xml:lang="en">M. Feughelman Mechanical properties and structure of alpha-keratin fibers. 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