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 <front>
  <journal-meta>
   <journal-id journal-id-type="publisher-id">Herald of Technological University</journal-id>
   <journal-title-group>
    <journal-title xml:lang="en">Herald of Technological University</journal-title>
    <trans-title-group xml:lang="ru">
     <trans-title>ВЕСТНИК ТЕХНОЛОГИЧЕСКОГО УНИВЕРСИТЕТА</trans-title>
    </trans-title-group>
   </journal-title-group>
   <issn publication-format="print">3034-4689</issn>
  </journal-meta>
  <article-meta>
   <article-id pub-id-type="publisher-id">62800</article-id>
   <article-categories>
    <subj-group subj-group-type="toc-heading" xml:lang="ru">
     <subject>ХИМИЯ, ТЕХНОЛОГИЯ И ИСПОЛЬЗОВАНИЕ ПОЛИМЕРОВ</subject>
    </subj-group>
    <subj-group subj-group-type="toc-heading" xml:lang="en">
     <subject></subject>
    </subj-group>
    <subj-group>
     <subject>ХИМИЯ, ТЕХНОЛОГИЯ И ИСПОЛЬЗОВАНИЕ ПОЛИМЕРОВ</subject>
    </subj-group>
   </article-categories>
   <title-group>
    <article-title xml:lang="en">LOCAL STEREOCHEMICAL MICROSTRUCTURES DEPENDENCE OF b RELAXATION PROCESS IN SOME VINYL POLYMERS: FUNDAMENTALS AND CORRELATIONS</article-title>
   </title-group>
   <contrib-group content-type="authors">
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Guarrotxena</surname>
       <given-names>N </given-names>
      </name>
      <name xml:lang="en">
       <surname>Guarrotxena</surname>
       <given-names>N </given-names>
      </name>
     </name-alternatives>
     <email>nekane@ictp.csic.es</email>
     <xref ref-type="aff" rid="aff-1"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Zaikov</surname>
       <given-names>G E</given-names>
      </name>
      <name xml:lang="en">
       <surname>Zaikov</surname>
       <given-names>G E</given-names>
      </name>
     </name-alternatives>
     <xref ref-type="aff" rid="aff-2"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Shkodich</surname>
       <given-names>V F</given-names>
      </name>
      <name xml:lang="en">
       <surname>Shkodich</surname>
       <given-names>V F</given-names>
      </name>
     </name-alternatives>
     <email>shkodich@mail.ru</email>
     <xref ref-type="aff" rid="aff-3"/>
    </contrib>
    <contrib contrib-type="author">
     <name-alternatives>
      <name xml:lang="ru">
       <surname>Kochnev</surname>
       <given-names>A M</given-names>
      </name>
      <name xml:lang="en">
       <surname>Kochnev</surname>
       <given-names>A M</given-names>
      </name>
     </name-alternatives>
     <email>kochnev55@bk.ru</email>
     <xref ref-type="aff" rid="aff-4"/>
    </contrib>
   </contrib-group>
   <aff-alternatives id="aff-1">
    <aff>
     <institution xml:lang="ru">Institute of polymer science and technology</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Institute of polymer science and technology</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-2">
    <aff>
     <institution xml:lang="ru">KNRTU</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">KNRTU</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-3">
    <aff>
     <institution xml:lang="ru">Department of technology of synthetic rubbe</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Department of technology of synthetic rubbe</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <aff-alternatives id="aff-4">
    <aff>
     <institution xml:lang="ru">Department of technology of synthetic rubber</institution>
     <country>ru</country>
    </aff>
    <aff>
     <institution xml:lang="en">Department of technology of synthetic rubber</institution>
     <country>ru</country>
    </aff>
   </aff-alternatives>
   <pub-date publication-format="print" date-type="pub" iso-8601-date="2025-08-01T14:16:21+03:00">
    <day>01</day>
    <month>08</month>
    <year>2025</year>
   </pub-date>
   <pub-date publication-format="electronic" date-type="pub" iso-8601-date="2025-08-01T14:16:21+03:00">
    <day>01</day>
    <month>08</month>
    <year>2025</year>
   </pub-date>
   <volume>17</volume>
   <issue>6</issue>
   <fpage>154</fpage>
   <lpage>159</lpage>
   <history>
    <date date-type="received" iso-8601-date="2023-04-20T15:23:28+03:00">
     <day>20</day>
     <month>04</month>
     <year>2023</year>
    </date>
   </history>
   <self-uri xlink:href="https://vestniktu.ru/en/nauka/article/62800/view">https://vestniktu.ru/en/nauka/article/62800/view</self-uri>
   <abstract xml:lang="ru">
    <p>Динамический механический анализ (ДМА) является доступным и универсальным аналитическим методом, в котором образец подвергают осциллирующему напряжению или деформации как функции от колебательной частоты и температуры. Благодаря этому неразрушающему измерению, может быть получено полное понимание о динамических механических свойствах полимеров. В связи с этим два типа полимеров, имеющих различные тактично-зависимые стереохимические микроструктуры, были представлены контролируемой динамо-механической прочностью. Один серия состоит из трех различных образцов ПВХ, до и после реакции замещения в различной степени концентрации и расплава. А другая серия состоит из трех коммерческих образцов ПММА. В данной работе, представлена прямая зависимость между β-переходом и содержанием MMР тетрад концов изотактических макромолекул, по меньшей мере одной гептады в длину, особенно с теми MMР структурами, принимающих GTTG
                  -TT конформацию. В основном это свидетельствует о том, что β-переход как температуры, так и интенсивности, уменьшается с долей вышеупомянутых микроструктур, способствуя к вовлечению свободного объема и степени сцепления местных движений в механизмах физико-химических процессов, ответственных за механическое поведение ПВХ и ПММА. </p>
   </abstract>
   <trans-abstract xml:lang="en">
    <p>Dynamic mechanical thermal analysis (DMTA) is an accessible and versatile analytical technique where a sample is submitted to an oscillating stress or strain as a function of oscillatory frequency and temperature. Through this non-destructive measurement, a comprehensive understanding of the dynamic mechanical properties of polymers may be obtained. In this context, two series of polymers having different tacticity-dependent stereochemical microstructures have been submitted to controlled dynamo-mechanical strength. One series consists of three different PVC samples prior to and after substitution reaction to various extents in solution and in melt state. And one series consists of three commercial PMMA samples. In this review, we provide a straight correlation between β-relaxation and the content of mmr tetrads termini of isotactic sequences of at least one heptad in length, especially with those mmr structures taking the GTTG
                  -TT conformation. Basically it is demonstrated that β-relaxation both, temperature and intensity, decrease with the content of the aforementioned microstructures, giving further support to the implication of magnitudes such as free volume and of coupling degree of the local motions in the mechanisms of the physicochemical processes responsible of the PVC and PMMA mechanical behaviors.</p>
   </trans-abstract>
   <kwd-group xml:lang="ru">
    <kwd>PVC</kwd>
    <kwd>PMMA</kwd>
    <kwd>β-relaxation</kwd>
    <kwd>chain conformation</kwd>
    <kwd>local motion</kwd>
    <kwd>nucleophilic substitution</kwd>
    <kwd>molecular microstructure</kwd>
    <kwd>поливинилхлорид</kwd>
    <kwd>полиметилметакрилат</kwd>
    <kwd>релаксационный β-переход</kwd>
    <kwd>конформация цепей</kwd>
    <kwd>нуклеофильное замещение</kwd>
    <kwd>молекулярная микроструктура</kwd>
   </kwd-group>
   <kwd-group xml:lang="en">
    <kwd>PVC</kwd>
    <kwd>PMMA</kwd>
    <kwd>β-relaxation</kwd>
    <kwd>chain conformation</kwd>
    <kwd>local motion</kwd>
    <kwd>nucleophilic substitution</kwd>
    <kwd>molecular microstructure</kwd>
    <kwd>поливинилхлорид</kwd>
    <kwd>полиметилметакрилат</kwd>
    <kwd>релаксационный β-переход</kwd>
    <kwd>конформация цепей</kwd>
    <kwd>нуклеофильное замещение</kwd>
    <kwd>молекулярная микроструктура</kwd>
   </kwd-group>
  </article-meta>
 </front>
 <body>
  <p></p>
 </body>
 <back>
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