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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">vestich</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Национальной академии наук Беларуси. Серия химических наук</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the National Academy of Sciences of Belarus, Chemical Series</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8331</issn><issn pub-type="epub">2524-2342</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">10.29235/1561-8331-2022-58-1-7-16</article-id><article-id custom-type="elpub" pub-id-type="custom">vestich-699</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>ФИЗИЧЕСКАЯ ХИМИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICAL CHEMISTRY</subject></subj-group></article-categories><title-group><article-title>Реологические свойства и гидролитическая устойчивость in vitro композиции карбоксиметилцеллюлоза–диоксидин</article-title><trans-title-group xml:lang="en"><trans-title>Rheological properties and in vitro hydrolytic stability of the carboxymethylcellulose–dioxidine composition</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>Юркштович</surname><given-names>Т. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Yurkshtovich</surname><given-names>T. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юркштович Татьяна Лукинична – кандидат химических наук, доцент, заведующая лабораторией</p><p>ул. Ленинградская, 14, 220006, Минск</p></bio><bio xml:lang="en"><p>Yurkshtovich Tatiana L. – Ph. D. (Chemistry), Associate Professor, Head of the laboratory</p><p>14, Leningradskaya str., 220006, Minsk</p></bio><email xlink:type="simple">yurk@bsu.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>Юркштович</surname><given-names>Н. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Yurkshtovich</surname><given-names>N. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Юркштович Николай Константинович – кандидат химических наук</p><p>ул. Акад. Купревича, 5/3, 220141, Минск</p></bio><bio xml:lang="en"><p>Yurkshtovich Nikolai K. – Ph. D. (Chemistry), Deputy director of the State Enterprise “Academpharm”</p><p>5/3, Academician Kuprevich str., 220141, Minsk</p></bio><email xlink:type="simple">yurkshtovich@tut.by</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>Голуб</surname><given-names>Н. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Golub</surname><given-names>N. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Голуб Наталья Васильевна – кандидат химических. наук, cтарший научный сотрудник</p><p>ул. Ленинградская, 14, 220006, Минск</p></bio><bio xml:lang="en"><p>Golub Natalia V. – Ph. D. (Chemistry), Senior Researcher</p><p>14, Leningradskaya str., 220006, Minsk</p></bio><email xlink:type="simple">natali.golub@tut.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>Костерова</surname><given-names>Р. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Kosterova</surname><given-names>R. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Костерова Раиса Ивановна – научный сотрудник</p><p>ул. Ленинградская, 14, 220006, Минск</p></bio><bio xml:lang="en"><p>Kosterova Raisa I.– Researcher</p><p>14, Leningradskaya str., 220006, Minsk</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Пристромова</surname><given-names>Ю. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Pristromova</surname><given-names>Y. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Пристромова Юлия Игоревна – младший научный сотрудник</p><p>ул. Ленинградская, 14, 220006, Минск</p></bio><bio xml:lang="en"><p>Pristromova Yulia I. – Junior Researcher</p><p>14, Leningradskaya str., 220006, Minsk</p></bio><email xlink:type="simple">prystromyi@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>Соломевич</surname><given-names>С. О.</given-names></name><name name-style="western" xml:lang="en"><surname>Solomevich</surname><given-names>S. O.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соломевич Сергей Олегович – кандидат химических наук, старший научный сотрудник</p><p>ул. Ленинградская, 14, 220006, Минск</p></bio><bio xml:lang="en"><p>Solomevich Sergey O. – Ph. D. (Chemistry), Senior Researcher</p><p>14, Leningradskaya str., 220006, Minsk</p></bio><email xlink:type="simple">sergeysolomevich@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>Бычковский</surname><given-names>П. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Bychkovsky</surname><given-names>P. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Бычковский Павел Михайлович – кандидат химических наук, доцент, директор</p><p>ул. Акад. Курчатова, 1 , 220045, Минск</p></bio><bio xml:lang="en"><p>Bychkovski Pavel M. – Ph. D. (Chemistry), Associate Professor, Director</p><p>1, Akademician Kurchatov str., 220045, Minsk</p></bio><email xlink:type="simple">bychkovsky@tut.by</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Научно-исследовательский институт физико-химических проблем Белорусского государственного университета</institution></aff><aff xml:lang="en"><institution>Research Institute for Physical Chemical Problems of the Belarusian State University</institution></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Государственное предприятие «Академфарм»</institution></aff><aff xml:lang="en"><institution>State Enterprise “Aсadempharm”</institution></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Учебно-научно-производственное республиканское унитарное предприятие «Унитехпром БГУ»</institution></aff><aff xml:lang="en"><institution>The Educational, Scientific and Production Republican Unitary Enterprise “UE Unitehprom BSU”</institution></aff></aff-alternatives><pub-date pub-type="collection"><year>2022</year></pub-date><pub-date pub-type="epub"><day>09</day><month>03</month><year>2022</year></pub-date><volume>58</volume><issue>1</issue><fpage>7</fpage><lpage>16</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Юркштович Т.Л., Юркштович Н.К., Голуб Н.В., Костерова Р.И., Пристромова Ю.И., Соломевич С.О., Бычковский П.М., 2022</copyright-statement><copyright-year>2022</copyright-year><copyright-holder xml:lang="ru">Юркштович Т.Л., Юркштович Н.К., Голуб Н.В., Костерова Р.И., Пристромова Ю.И., Соломевич С.О., Бычковский П.М.</copyright-holder><copyright-holder xml:lang="en">Yurkshtovich T.L., Yurkshtovich N.K., Golub N.V., Kosterova R.I., Pristromova Y.I., Solomevich S.O., Bychkovsky P.M.</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://vestichem.belnauka.by/jour/article/view/699">https://vestichem.belnauka.by/jour/article/view/699</self-uri><abstract><p>Получена композиция карбоксиметилцеллюлоза–диоксидин и изучены ее структурно-морфологические и реологические характеристики в условиях термообработки и химического гидролиза в фосфатном буферном растворе с рН 7,4. Методами ИК-спектроскопии, сканирующей электронной микроскопии, вискозиметрии установлено, что введение диоксидина в раствор натриевой соли карбоксиметилцеллюлозы с разной молекулярной массой приводит к частичному разупорядочиванию водородных связей между макромолекулами, способствует термодеструкции полиcахарида, понижению динамической вязкости растворов. Получены экспериментальные кинетические кривые гидролиза карбоксиметилцеллюлозы в присутствии и в отсутствие диоксидина и установлено, что они могут быть описаны с помощью уравнения первого порядка. Рассчитаны константы скорости гидролиза и показано, что в результате термообработки, а также в присутствии активного вещества скорость процесса гидролиза карбоксиметилцеллюлозы в условиях in vitro увеличивается. Изменение реологических свойств растворов натриевой соли карбоксиметилцеллюлозы с разной степенью полимеризации в присутствии антимикробного вещества следует учитывать в выборе состава вязких пролонгированных форм биологически активных веществ.</p></abstract><trans-abstract xml:lang="en"><p>The composition of carboxymethylcellulose–dioxydine was obtained and its structural, morphological and rheological characteristics in the processes of heat treatment and chemical hydrolysis were studied. Using IR spectroscopy, scanning electron microscopy, and viscometry, it has been established that the introduction of dioxidine into a solution of carboxymethylcellulose sodium salt with different molecular weights leads to partial disordering of hydrogen bonds between macromolecules, promotes thermal destruction of the polysaccharide and a decrease in the dynamic viscosity of solutions. Experimental kinetic curves of carboxymethylcellulose hydrolysis in the presence and absence of dioxidine were obtained, and it was shown that they could be described using a first-order equation. The hydrolysis rate coefficients were calculated, and it was shown that, as a result of heat treatment, as well as in the presence of an active substance, the rate of carboxymethylcellulose hydrolysis increased. The change in the rheological properties of carboxymethylcellulose sodium salt solutions with different degrees of polymerization in the presence of an antimicrobial substance should be taken into account when choosing the composition of viscous prolonged forms of biologically active substances.</p><p> </p></trans-abstract><kwd-group xml:lang="ru"><kwd>карбоксиметилцеллюлоза</kwd><kwd>диоксидин</kwd><kwd>термодеструкция</kwd><kwd>гидролиз</kwd><kwd>реологические характеристики</kwd></kwd-group><kwd-group xml:lang="en"><kwd>carboxymethylcellulose</kwd><kwd>dioxydine</kwd><kwd>thermal degradation</kwd><kwd>hydrolysis</kwd><kwd>rheological characteristics</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">Изучение реологических свойств растворов натриевой соли карбоксиметилцеллюлозы / В. В. Чернова [и др.] // Изв. Сарат. ун-та нов. Сер. Химия. Биология. 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