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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Ogarev-online</journal-id><journal-title-group><journal-title xml:lang="en">Ogarev-online</journal-title><trans-title-group xml:lang="ru"><trans-title>Огарёв-online</trans-title></trans-title-group></journal-title-group><issn publication-format="electronic">2311-2468</issn><publisher><publisher-name xml:lang="en">National Research Mordovia State University</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">333339</article-id><article-id pub-id-type="doi">10.15507/2311-2468.013.202504.401-410</article-id><article-id pub-id-type="edn">opzffn</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Technical Sciences</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Технические науки</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Laboratory Synthesis of Technical-Grade Hydroxypropyl Methylcellulose from Hemp Shive (Industrial Hemp)</article-title><trans-title-group xml:lang="ru"><trans-title>Лабораторный синтез гидроксипропилметилцеллюлозы технического качества из пеньки (технической конопли)</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0005-3601-1005</contrib-id><name-alternatives><name xml:lang="en"><surname>Asfandeev</surname><given-names>Andrey Yu.</given-names></name><name xml:lang="ru"><surname>Асфандеев</surname><given-names>Андрей Юрьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Postgraduate Student at the Institute of High‑Tech Technologies and New Materials</p></bio><bio xml:lang="ru"><p>Аспирант Института наукоемких технологий и новых материалов</p></bio><email>asfandeev.a.yu@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-1774-0836</contrib-id><contrib-id contrib-id-type="spin">4915-4366</contrib-id><name-alternatives><name xml:lang="en"><surname>Kostryukov</surname><given-names>Sergey G.</given-names></name><name xml:lang="ru"><surname>Кострюков</surname><given-names>Сергей Геннадьевич</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Candidate of Chemical Sciences, Associate Professor at the Department of Fundamental Chemistry and Chemical Technology</p></bio><bio xml:lang="ru"><p>Кандидат химических наук, доцент кафедры фундаментальной химии и химической технологии</p></bio><email>kostryukov_sg@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0002-3612-5959</contrib-id><name-alternatives><name xml:lang="en"><surname>Burmistrova</surname><given-names>Anastasia A.</given-names></name><name xml:lang="ru"><surname>Бурмистрова</surname><given-names>Анастасия Александровна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Student at the Institute of High‑Tech Technologies and New Materials</p></bio><bio xml:lang="ru"><p>Студент Института наукоемких технологий и новых материалов </p></bio><email>nastya.burmistrova1411@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0003-5927-0080</contrib-id><name-alternatives><name xml:lang="en"><surname>Kuzmicheva</surname><given-names>Anastasia A.</given-names></name><name xml:lang="ru"><surname>Кузьмичева</surname><given-names>Анастасия Алексеевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Student at the Institute of High‑Tech Technologies and New Materials</p></bio><bio xml:lang="ru"><p>Студент Института наукоемких технологий и новых материалов</p></bio><email>Kuzmicheva_nastya04@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">National Research Mordovia State University</institution></aff><aff><institution xml:lang="ru">Национальный исследовательский Мордовский государственный университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-12-29" publication-format="electronic"><day>29</day><month>12</month><year>2025</year></pub-date><volume>13</volume><issue>4</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>401</fpage><lpage>410</lpage><history><date date-type="received" iso-8601-date="2025-10-20"><day>20</day><month>10</month><year>2025</year></date><date date-type="accepted" iso-8601-date="2025-11-10"><day>10</day><month>11</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Asfandeev A.Y., Kostryukov S.G., Burmistrova A.A., Kuzmicheva A.A.</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Асфандеев А.Ю., Кострюков С.Г., Бурмистрова А.А., Кузьмичева А.А.</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Asfandeev A.Y., Kostryukov S.G., Burmistrova A.A., Kuzmicheva A.A.</copyright-holder><copyright-holder xml:lang="ru">Асфандеев А.Ю., Кострюков С.Г., Бурмистрова А.А., Кузьмичева А.А.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0/</ali:license_ref></license></permissions><self-uri xlink:href="https://ogarev-online.ru/2311-2468/article/view/333339">https://ogarev-online.ru/2311-2468/article/view/333339</self-uri><abstract xml:lang="en"><p><bold>Introduction</bold>. Hydroxypropyl methylcellulose (HPMC) is an important cellulose derivative widely used in various industries. The aim of the study is to develop a method for synthesizing HPMC from industrial hemp cellulose, which is a renewable and cost‑effective raw material.</p> <p><bold>Materials and Methods</bold>. The study used samples of cellulose‑containing hemp shive and industrially produced chemical reagents without additional purification. The synthesis was carried out in a heterogeneous medium of toluene/isopropanol. The product was characterized using Fourier transform infrared (FTIR) spectroscopy and nuclear magnetic resonance (NMR) spectroscopy on nuclei ¹H and ¹³C. The viscosity of 2 % aqueous solutions was determined using a Brookfield viscometer.</p> <p><bold>Results</bold>. The synthesis of HPMC from pre‑dried hemp shive was successfully accomplished. The degree of methylation (DS) and hydroxypropylation (MS) was determined by ¹³C NMR spectroscopy. FTIR spectroscopy data confirmed the formation of cellulose ether. The dynamic viscosity of the obtained samples for 2 % aqueous solutions ranged from 35 to 58 Pa · s.</p> <p><bold>Discussion and Conclusion</bold>. The developed method demonstrates the possibility of efficiently producing HPMC from renewable hemp raw material under laboratory conditions. The process is reproducible and controllable, with the yield of the target product ranging from 76 to 81 %.</p></abstract><trans-abstract xml:lang="ru"><p><bold>Введение</bold>. Гидроксипропилметилцеллюлоза (ГПМЦ) является важной производной целлюлозы, широко применяемой в различных отраслях промышленности. Цель исследования – разработка метода синтеза ГПМЦ из целлюлозы технической конопли, выступающей возобновляемым и экономичным сырьем.</p> <p><bold>Материалы и методы</bold>. В работе использованы образцы целлюлозосодержащей пеньки и химические реагенты промышленного производства без дополнительной очистки. Синтез проводили в гетерогенной среде толуол/изопропанол. Для характеристики продукта применяли инфракрасную спектроскопию (ИК) с преобразованием Фурье, а также спектроскопию ядерного магнитного резонанса (ЯМР) на ядрах ¹H и ¹³C. Вязкость 2 %-ных водных растворов определяли с помощью вискозиметра Брукфильда (Brookfield).</p> <p><bold>Результаты исследования</bold>. Успешно осуществлен синтез ГПМЦ из предварительно высушенной пеньки. Степень метилирования (DS) и гидроксипропилирования (MS) определена методом ЯМР-спектроскопии на ядрах ¹³C. Данные ИК-спектроскопии подтвердили образование эфира целлюлозы. Динамическая вязкость полученных образцов для 2 %-ных водных растворов составила от 35 до 58 Па · с.</p> <p><bold>Обсуждение и заключение</bold>. Разработанный метод демонстрирует возможность эффективного получения ГПМЦ из возобновляемого конопляного сырья в лабораторных условиях. Процесс воспроизводимый и управляемый; выход целевого продукта составляет 76–81 %.</p></trans-abstract><kwd-group xml:lang="en"><kwd>hydroxypropyl methylcellulose (HPMC)</kwd><kwd>industrial hemp</kwd><kwd>hemp fiber</kwd><kwd>dimethyl sulfate</kwd><kwd>propylene oxide</kwd><kwd>degree of substitution</kwd><kwd>viscosity</kwd><kwd>FTIR spectroscopy</kwd><kwd>NMR spectroscopy</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>гидроксипропилметилцеллюлоза (ГПМЦ)</kwd><kwd>техническая конопля</kwd><kwd>пенька</kwd><kwd>диметилсульфат</kwd><kwd>окись пропилена</kwd><kwd>степень замещения</kwd><kwd>вязкость</kwd><kwd>ИК-спектроскопия</kwd><kwd>ЯМР-спектроскопия</kwd></kwd-group><funding-group><award-group><funding-source><institution-wrap><institution xml:lang="ru">Исследование выполнено при финансовой поддержке внутривузовского научного гранта в области гуманитарных, естественных и инженерно-технических наук ФГБОУ ВО "МГУ им. Н.П. Огарёва" 2025 года (Приоритет 2030).</institution></institution-wrap><institution-wrap><institution xml:lang="en">The research was carried out with the financial support of the intra-university scientific grant in the field of humanities, natural, and engineering sciences of the Mordovia State University 2025 (Priority 2030).</institution></institution-wrap></funding-source></award-group></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">Majewicz T.G., Erazo-Majewicz P., Podlas T.J. Cellulose Ethers. Kirk-Othmer Encyclopedia of Chemical Technology. 2002. https://doi.org/10.1002/0471440264.pst044 2</mixed-citation><mixed-citation xml:lang="ru">Cellulose Ethers / T. G. 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