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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2020-11-67-72</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-2010</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>ФИЗИКО-ХИМИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICOCHEMICAL MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Определение гранулометрического состава и электрокинетического потенциала порошков филлосиликатов методом фотонной корреляционной спектроскопии</article-title><trans-title-group xml:lang="en"><trans-title>Determination of particle size distribution and electrokinetic potential of phyllosilicate powders by photon correlation spectroscopy</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-7045-3588</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Четверикова</surname><given-names>А. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Chetverikova</surname><given-names>A. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Геннадьевна Четверикова</p><p>Оренбург</p></bio><bio xml:lang="en"><p>Anna G. Chetverikova </p><p>Orenburg</p></bio><email xlink:type="simple">KR-727@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Оренбургский государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Orenburg State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>28</day><month>09</month><year>2023</year></pub-date><volume>0</volume><issue>11</issue><fpage>67</fpage><lpage>72</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/2010">https://www.izmt.ru/jour/article/view/2010</self-uri><abstract><p>Рассмотрены актуальные проблемы контроля гранулометрического состава и электрокинетического потенциала порошков филлосиликатов методом фотонной корреляционной спектроскопии. Проанализированы стабильные стандартно подготовленные коллоидные растворы порошков каолинитовой и монтмориллонитовой глин месторождений Оренбургской области. Наиболее качественный раствор с доступными для наблюдения объектами получен вблизи изоэлектрической точки скола минералов (водородный показатель раствора pH=6,5 ). Определены модальные эффективные диаметры неагломерированных частиц каолинита и монтмориллонита. Установлено образование ультра- и микроагрегатов частиц микрометровых размеров, взаимодействовавших как по базисным плоскостям, так и по типу «базис – боковой скол». Измерена зависимость электрокинетического потенциала суспензии каолинитовых и монтмориллонитовых частиц от водородного показателя среды. Показано, что поведение частиц обоих типов в электрическом поле в суспензии сpH&gt;5  практически аналогично, а основные различия проявляются в кислой среде: изоэлектрическая точка для каолинита близка кpH=2 а для монтмориллонита – кpH=3,5 Результаты исследования будут полезны при создании адсорбентов на основе природных филлосиликатов.</p></abstract><trans-abstract xml:lang="en"><p>The creation of adsorbents based on natural phylosilicates is one of the primary tasks of modern materials science. In its solution, the control of the granulometric composition of the powders is a prerequisite. The issues of controlling the particle size distribution and electrokinetic potential of phyllosilicates by the method of photon correlation spectroscopy are considered. Stable standardly prepared colloidal solutions of powders of kaolinite and montmorillonite clays from deposits of the Orenburg region are analyzed. The highest quality solution with objects accessible for observation was obtained near the isoelectric cleavage point of minerals (potential of hydrogen  pH=6,5). The modal effective diameters of non-agglomerated particles of kaolinite and montmorillonite have been determined. The formation of ultra- and microaggregates of micron-sized particles was established, interacting both along the basal planes and by the type of basal-lateral cleavage. The dependence of the electrokinetic potential of a suspension of kaolinite and montmorillonite particles on the pH of the medium has been measured. It is shown that the behavior of particles of both types in an electric field in a suspension with pH&gt;5 is practically the same, and the main differences are manifested in an acidic medium: the isoelectric point for kaolinite is close to and for montmorillonite pH=3,5.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гранулометрический состав</kwd><kwd>электрокинетический потенциал</kwd><kwd>коллоидный раствор</kwd><kwd>pH среды</kwd><kwd>филлосиликат</kwd></kwd-group><kwd-group xml:lang="en"><kwd>particle size distribution</kwd><kwd>electrokinetic potential</kwd><kwd>colloidal solution</kwd><kwd>pH of the medium</kwd><kwd>phyllosilicate</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">автор выражает благодарность сотрудникам Центра коллективного пользования приборным оборудованием «Институт микро- и нанотехнологий» (ЦКП ИМНТ ОГУ) Алиджанову Э. К. и Никияну А. 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