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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">dan</journal-id><journal-title-group><journal-title xml:lang="ru">Доклады Национальной академии наук Беларуси</journal-title><trans-title-group xml:lang="en"><trans-title>Doklady of the National Academy of Sciences of Belarus</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1561-8323</issn><issn pub-type="epub">2524-2431</issn><publisher><publisher-name>The Republican Unitary Enterprise Publishing House "Belaruskaya Navuka"</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">dan-102</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>СТРУКТУРА И СВОЙСТВА ДИСПЕРСИЙ ДИОКСИДА КРЕМНИЯ В ПОЛИЭТИЛЕНГЛИКОЛЕ-400</article-title><trans-title-group xml:lang="en"><trans-title>STRUCTURE AND PROPERTIES OF THE DISPERSIONS OF SILICA IN POLYETHYLENE GLYCOL-400</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>ПЛИСКО</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>PLISKO</surname><given-names>T. V.</given-names></name></name-alternatives><email xlink:type="simple">sumire-san@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>БИЛЬДЮКЕВИЧ</surname><given-names>А. В.</given-names></name><name name-style="western" xml:lang="en"><surname>BILDYUKEVICH</surname><given-names>A. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>академик</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>ЗЕЛЕНКОВСКИЙ</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>ZELENKOVSKY</surname><given-names>V. M.</given-names></name></name-alternatives><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="ru" id="aff-1"><institution>Институт физико-органической химии НАН Беларуси, Минск</institution><country>Belarus</country></aff><pub-date pub-type="collection"><year>2015</year></pub-date><pub-date pub-type="epub"><day>01</day><month>06</month><year>2016</year></pub-date><volume>59</volume><issue>3</issue><fpage>51</fpage><lpage>55</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ПЛИСКО Т.В., БИЛЬДЮКЕВИЧ А.В., ЗЕЛЕНКОВСКИЙ В.М., 2016</copyright-statement><copyright-year>2016</copyright-year><copyright-holder xml:lang="ru">ПЛИСКО Т.В., БИЛЬДЮКЕВИЧ А.В., ЗЕЛЕНКОВСКИЙ В.М.</copyright-holder><copyright-holder xml:lang="en">PLISKO T.V., BILDYUKEVICH A.V., ZELENKOVSKY V.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://doklady.belnauka.by/jour/article/view/102">https://doklady.belnauka.by/jour/article/view/102</self-uri><abstract><p>Квантовохимическим моделированием и спектроскопическими исследованиями дисперсии диоксида кремния в полиэтиленгликоле с Mn = 400 г ∙ моль–1 (ПЭГ-400) подтверждена возможность образования водородной связи между силанольной группой и эфирным атомом кислорода или концевой гидроксильной группой ПЭГ-400. Показано, что дисперсии SiO2 в ПЭГ-400 с концентрацией 0,5–3 % являются золями, а при повышении концентрации SiO2 имеет место золь–гель переход, что обуславливает различную устойчивость дисперсий к термокоагуляции в зависимости от концентрации.</p></abstract><trans-abstract xml:lang="en"><p>The possibility of hydrogen bond formation between the silanol group and the oxygen atom of the ether group or the terminal hydroxyl group of polyethylene glycol (Mn = 400 g · mol–1, PEG-400) in the silica (aerosil) dispersions in PEG-400 was proved by quantum chemical simulation and IR-spectroscopy. The silica dispersions in PEG-400 over the concentration range of 0.5–3 % were found to be sols, but with increasing the silica concentration the sol–gel transition was shown to occur that yields different thermocoagulation stability of the dispersions depending on the silica concentration.</p></trans-abstract></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Raghavan S. R. et al. // Langmuir. 2000. Vol. 16. P. 7920–7930.</mixed-citation><mixed-citation xml:lang="en">Raghavan S. R. et al. // Langmuir. 2000. Vol. 16. P. 7920–7930.</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Jun Hou et al. // Langmuir. 2000. Vol. 16. P. 1066–1077.</mixed-citation><mixed-citation xml:lang="en">Jun Hou et al. // Langmuir. 2000. Vol. 16. 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