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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">10.26896/1028-6861-2021-87-1-5-11</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-1344</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>Изучение состава низкомолекулярных соединений в олигометилгидридсилоксанах</article-title><trans-title-group xml:lang="en"><trans-title>Study of the composition of low-molecular compounds in the oligomethylhydridesiloxanes</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>Филиппов</surname><given-names>А. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Filippov</surname><given-names>A. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Александр Михайлович Филиппов</p><p>105118, Москва, ш. Энтузиастов, д. 38</p></bio><bio xml:lang="en"><p>Alexander M. Filippov</p><p>38, Éntuziastov sh., Moscow, 105118</p></bio><email xlink:type="simple">amphil@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>Шулятьева</surname><given-names>Т. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Shulyatieva</surname><given-names>T. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Тамара Ивановна Шулятьева</p><p>105118, Москва, ш. Энтузиастов, д. 38</p></bio><bio xml:lang="en"><p>Tamara I. Shulyatieva</p><p>38, Éntuziastov sh., Moscow, 105118</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>Карпенков</surname><given-names>Е. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Karpenkov</surname><given-names>E. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Егор Игоревич Карпенков</p><p>105118, Москва, ш. Энтузиастов, д. 38</p></bio><bio xml:lang="en"><p>Egor I. Karpenkov</p><p>38, Éntuziastov sh., Moscow, 105118</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>Стороженко</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Storozsenko</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Павел Аркадьевич Стороженко</p><p>105118, Москва, ш. Энтузиастов, д. 38</p></bio><bio xml:lang="en"><p>Pavel A. Storozsenko</p><p>38, Éntuziastov sh., Moscow, 105118</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Государственный Трудового Красного Знамени научно-исследовательский институт химии и технологии элементоорганических соединений Государственный научный центр Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>RF State Scientific Center Joint Stock Company «State Research Institute for Chemistry and Technology of Organoelement Compounds» (JSC GNIIKhTÉOS)</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>18</day><month>01</month><year>2021</year></pub-date><volume>87</volume><issue>1</issue><fpage>5</fpage><lpage>11</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Филиппов А.М., Шулятьева Т.И., Карпенков Е.И., Стороженко П.А., 2021</copyright-statement><copyright-year>2021</copyright-year><copyright-holder xml:lang="ru">Филиппов А.М., Шулятьева Т.И., Карпенков Е.И., Стороженко П.А.</copyright-holder><copyright-holder xml:lang="en">Filippov A.M., Shulyatieva T.I., Karpenkov E.I., Storozsenko P.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/1344">https://www.zldm.ru/jour/article/view/1344</self-uri><abstract><p>Олигометилгидридсилоксаны благодаря наличию реакционноспособной гидридсилильной (SiH) связи нашли широкое применение в строительной, бумажной, текстильной и резиновой промышленности. Низкомолекулярные фракции метилгидридсилоксанов как циклического, так и линейного строения негативно влияют на эксплуатационные свойства материалов, изготовленных на основе олигомеров. В связи с этим основная цель данной работы состояла в идентификации данных фракций в товарном продукте 136-157М, а также в синтезированных из него соолигомерах. Для решения поставленной задачи использовали метод хромато-масс-спектрометрии. Первоначально было доказано, что при росте температуры колонки и испарителя от 60 до 300 °C состав низкомолекулярных фракций не меняется. Следовательно, никаких деполимеризационных процессов, связанных с образованием низкомолекулярных соединений, в ходе анализа не протекает. Для качественного анализа низкомолекулярной фракции ее компоненты разделяли на капиллярной колонке и идентифицировали при использовании масс-детектора с ионной ловушкой. Было показано, что под действием электронной ионизации происходит фрагментация молекул с образованием положительно заряженных ионов. Для метилгидридсилоксанов в первую очередь образуются катионы с молекулярной массой [M – 15]+, которые возникают при разрыве углеродсилильной связи. Если такой разрыв происходит в циклосилоксанах с общим числом звеньев более четырех, то могут протекать дальнейшие процессы диссоциации с отрывом нейтрального фрагмента (метилсилана) и образованием бициклосилоксановых катионов. Так как набор положительных ионов индивидуален для каждого из компонентов и зависит от [M]+•, можно с высокой степенью достоверности покомпонентно описать всю низкомолекулярную фракцию. Было установлено, что в товарном образце ее можно описать двумя гомологическими рядами — циклических где m ≥ 4, и линейных силоксанов где n ≥ 1.</p></abstract><trans-abstract xml:lang="en"><p>The presence of reactive hydrogen-silyl (SiH) bonds in oligomethylhydrosiloxanes provided their widespread use in the building, paper, textile and rubber industries. Low molecular weight fractions of methylhydrosiloxanes, both cyclic and linear, negatively affect the performance of oligomer-based materials. The main goal of the present study is detection and identification of these fractions in the commercial product 136-157M, as well as in the co-oligomers synthesized from it. A method of gas chromatography-mass spectrometry was used in the study. First, we proved that an increase in the temperature of the column and evaporator from 60°C to 300°C does not change the composition of the low molecular weight fractions. Consequently, no depolymerization processes related to the formation of low-molecular-weight compounds occur during the analysis. To perform a qualitative analysis, the components of low-molecular-weight fraction were separated on a capillary column and then identified using a mass detector with an ion trap. It is shown that electron ionization triggers fragmentation of molecules and the formation of positively charged ions. As for methylhydrosiloxanes, cations with a molecular weight of [M – 15]+ arising from the rupture of the carbon-silyl bond are formed first. Moreover, when such a rupture occurs in cyclosiloxanes with a total number of units of more than four, further dissociation processes can occur with the detachment of the neutral fragment (methylsilane) and the formation of bicyclosiloxane cations. Since the set of positive ions is individual for each of the components and depends on [M]+•, a component-wise description of the entire low molecular weight fraction becomes possible with a high degree of the reliability. It is sown that for the considered commercial sample it can be described by two homologous series — cyclic where m ≥ 4, and linear siloxanes where n ≥ 1</p></trans-abstract><kwd-group xml:lang="ru"><kwd>газовая хроматография</kwd><kwd>масс-спектрометрия</kwd><kwd>метилгидридсилоксаны</kwd><kwd>гомологические ряды</kwd><kwd>электронная ионизация</kwd><kwd>фрагментация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>gas chromatography</kwd><kwd>mass spectrometry</kwd><kwd>methylhydrosiloxanes</kwd><kwd>homologous series</kwd><kwd>electronic ionization</kwd><kwd>fragmentation</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Авторы выражают благодарность И. Ю. 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