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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">plasticnews</journal-id><journal-title-group><journal-title xml:lang="ru">Пластические массы</journal-title><trans-title-group xml:lang="en"><trans-title>Plasticheskie massy</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0554-2901</issn><publisher><publisher-name>PLASTMASSY Publishing House (Moscow)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.35164/0554-2901-2023-9-10-6-8</article-id><article-id custom-type="elpub" pub-id-type="custom">plasticnews-909</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>XIX Международная научно-практическая конференция «Новые полимерные композиционные материалы. Микитаевские чтения»</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>XIX International Scientific and Practical Conference "New polymer composite materials. Mikitaev readings"</subject></subj-group></article-categories><title-group><article-title>Синтез поли(D,L-лактида) с контролируемой молекулярной массой и типом концевых групп</article-title><trans-title-group xml:lang="en"><trans-title>Synthesis of poly(D,L-lactide) with controlled molecular weight and type of end-groups</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>Атаманова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Atamanova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</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>Спирин</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Spirin</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Седуш</surname><given-names>Н. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Sedush</surname><given-names>N. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Москва</p></bio><bio xml:lang="en"><p>Moscow</p></bio><email xlink:type="simple">nsedush@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Институт синтетических полимерных материалов им. Н.С. Ениколопова РАН; Национальный исследовательский центр «Курчатовский институт»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Enikolopov Institute of Synthetic Polymeric Materials RAS; National Research Center «Kurchatov Institute»</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>ФГБНУ «Российский научный центр хирургии им. акад. Б.В. Петровского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Petrovsky National Research Centre of Surgery</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>11</month><year>2023</year></pub-date><volume>0</volume><issue>9-10</issue><fpage>6</fpage><lpage>8</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Атаманова А.А., Спирин О.А., Седуш Н.Г., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Атаманова А.А., Спирин О.А., Седуш Н.Г.</copyright-holder><copyright-holder xml:lang="en">Atamanova A.A., Spirin O.A., Sedush N.G.</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.plastics-news.ru/jour/article/view/909">https://www.plastics-news.ru/jour/article/view/909</self-uri><abstract><p>   Синтез поли(D,L-лактида) с заранее заданной молекулярной массой в диапазоне от 5 до 143 кДа проводили методом полимеризации лактида с раскрытием цикла в присутствии различной концентрации активатора 1,12-додекандиола. Для синтеза поли(D,L-лактида) с COOH-концевыми группами полимеризацию проводили в присутствии L-молочной кислоты. Установлено, что синтезированный полимер содержит на порядок более высокую концентрацию COOH-групп, чем поли(D,L-лактид), синтезированный в присутствии 1,12-додекандиола.</p></abstract><trans-abstract xml:lang="en"><p>   The synthesis of poly(D,L-lactide) with a predetermined molecular weight ranging from 5 to 143 kDa was conducted by ringopening polymerization of lactide in the presence of varying concentrations of the 1,12-dodecanediol activator. To synthesize poly(D,L-lactide) with COOH-end groups, polymerization was carried out in the presence of L-lactic acid. The synthesised polymer was found to contain an order of magnitude higher concentration of COOH groups than poly(D,L-lactide) synthesised in the presence of 1,12-dodecanediol.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>полилактид</kwd><kwd>биоразлагаемые полимеры</kwd><kwd>полимеризация с раскрытием цикла</kwd><kwd>молочная кислота</kwd><kwd>спектрофотометрия</kwd></kwd-group><kwd-group xml:lang="en"><kwd>polylactide</kwd><kwd>biodegradable polymers</kwd><kwd>ring-opening polymerization</kwd><kwd>lactic acid</kwd><kwd>spectrophotometry</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Garlotta, D. A Literature Review of Poly(Lactic Acid) // Journal of Polymers and the Environment. 2001 – №9. – C. 63-84.</mixed-citation><mixed-citation xml:lang="en">Garlotta, D. 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