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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">ikbgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Кабардино-Балкарского государственного университета</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Kabardino-Balkarian State University</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2221-7789</issn><publisher><publisher-name>Kabardino-Balkarian State University named after Kh. M. Berbekov</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.31143/2221-7789-2025-4-55-59</article-id><article-id custom-type="edn" pub-id-type="custom">OGGXLW</article-id><article-id custom-type="elpub" pub-id-type="custom">ikbgu-64</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>ТВЕРДОТЕЛЬНОЕ МОДИФИЦИРОВАНИЕ ХИТОЗАНА КОРИЧНОЙ КИСЛОТОЙ</article-title><trans-title-group xml:lang="en"><trans-title>SOLID-STATE MODIFICATION OF CHITOSAN BY CINNAMIC ACID</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>Хавпачев</surname><given-names>М. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Khavpachev</surname><given-names>M. A.</given-names></name></name-alternatives><email xlink:type="simple">mukhamed_hav@ispm.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>Малык</surname><given-names>Б. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Malyk</surname><given-names>B. V.</given-names></name></name-alternatives><email xlink:type="simple">mukhamed_hav@ispm.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>Иванов</surname><given-names>П. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanov</surname><given-names>P. L.</given-names></name></name-alternatives><email xlink:type="simple">mukhamed_hav@ispm.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>Рябкова</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryabkova</surname><given-names>O. A.</given-names></name></name-alternatives><email xlink:type="simple">mukhamed_hav@ispm.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Акопова</surname><given-names>Т. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Akopova</surname><given-names>T. A.</given-names></name></name-alternatives><email xlink:type="simple">mukhamed_hav@ispm.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт физико-органической химии и углехимии им. Л.М. Литвиненко; Институт синтетических полимерных материалов им. Н.С. Ениколопова</institution></aff><aff xml:lang="en"><institution>L.M. Litvinenko Institute of Physical-Organic Chemistry and Coal Chemistry; N.S. Enikolopov Institute of Synthetic Polymeric Materials</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Институт физико-органической химии и углехимии им. Л.М. Литвиненко</institution></aff><aff xml:lang="en"><institution>L.M. Litvinenko Institute of Physical-Organic Chemistry and Coal Chemistry</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Институт синтетических полимерных материалов им. Н.С. Ениколопова</institution></aff><aff xml:lang="en"><institution>N.S. Enikolopov Institute of Synthetic Polymeric Materials</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>30</day><month>12</month><year>2025</year></pub-date><volume>15</volume><issue>4</issue><fpage>55</fpage><lpage>59</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хавпачев М.А., Малык Б.В., Иванов П.Л., Рябкова О.А., Акопова Т.А., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Хавпачев М.А., Малык Б.В., Иванов П.Л., Рябкова О.А., Акопова Т.А.</copyright-holder><copyright-holder xml:lang="en">Khavpachev M.A., Malyk B.V., Ivanov P.L., Ryabkova O.A., Akopova T.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.izvestiakbsu.ru/jour/article/view/64">https://www.izvestiakbsu.ru/jour/article/view/64</self-uri><abstract><p>Осуществлен синтез гидрофобного производного хитозана путем проведения реакции ацилирования полисахарида коричной кислотой в двухшнековом экструдере под действием сдвиговых напряжений. Показано, что при температуре 100 °C и различных соотношениях исходных реагентов образуются производные со степенью замещения от 0,05 до 0,21. Установлено, что реакция протекает по смешанному механизму и сопровождается присоединением кислоты или ее остатков к аминогруппам полимера ионными и ковалентными связями.</p></abstract><trans-abstract xml:lang="en"><p>Solvent-free acylation of chitosan with cinnamic acid was performed under shear stresses in a twin-screw extruder. At 100 °C, varying the chitosan-to-cinnamic acid molar ratio (1:0.5, 1:1, 1:1.5) yielded derivatives with degree of substitution values ranging from 0.05 to 0.21. Fourier-transform infrared spectroscopy revealed that the solid-state reaction proceeds via two pathways, involving both ionic and covalent bonding of the acid or its residues to the amino groups of the polymer.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>твердотельный синтез</kwd><kwd>давление и сдвиговые напряжения</kwd><kwd>механическая активация</kwd><kwd>хитозан</kwd><kwd>коричная кислота</kwd></kwd-group><kwd-group xml:lang="en"><kwd>solid-state synthesis</kwd><kwd>pressure and shear stresses</kwd><kwd>mechanical activation</kwd><kwd>chitosan</kwd><kwd>cinnamic acid</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">Акопова Т.А., Роговина С.З., Вихорева Г.А., Зеленецкий С.Н., Гальбрайх Л.С., Ениколопов Н.С. Образование хитозана из хитина в условиях сдвиговых деформаций // Высокомолекулярные со- единения. Серия Б. 1991. Т. 32, № 10. 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