Influence of lactic acid on the catalytic performance of MDABCO for ring-opening polymerization of l-lactide; Applied Catalysis A: General; Vol. 546

Influence of lactic acid on the catalytic performance of MDABCO for ring-opening polymerization of l-lactide; Applied Catalysis A: General; Vol. 546

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Parent link:Applied Catalysis A: General
Vol. 546.— 2017.— [P. 15–21]
Korporativní autor: Национальный исследовательский Томский политехнический университет (ТПУ) Институт природных ресурсов (ИПР) Кафедра технологии органических веществ и полимерных материалов (ТОВПМ)
Další autoři: Luo Zhixiong, Chaemchuen S. Somboon, Zhou Kui, Gonzalez A. A. Andres Alvarado, Verpoort F. V. K. Frensis Valter Kornelius
Shrnutí:Title screen
A series of metal organic frameworks (MOFs) MDABCO (M = Co, Ni, Cu, Zn; DABCO = 1,4-diazabicyclo[2.2.2]octane) are utilized as catalysts for the bulk ring-opening polymerization of l-lactide. The catalytic activity varies in the order CuDABCO, NiDABCO < ZnDABCO, CoDABCO. By adding lactic acid, we unexpectedly observed enhanced catalytic activity. The combined use of lactic acid and ZnDABCO during polymerization results in a highly active polymerization system, along with the gradual change of MOFs structure caused by an increased acid concentration. Compared to related homogeneous fragments, such as zinc nitrate and 1,4-diazabicyclo[2.2.2]octane, ZnDABCO is found to afford highly isotactic polylactide, which would be ascribed to the unique structural properties of MOFs.
Режим доступа: по договору с организацией-держателем ресурса
Jazyk:angličtina
Vydáno: 2017
Témata:
электронный ресурс
труды учёных ТПУ
Ring-opening polymerization
polylactide
MDABCO MOFs
lactic acid
heterogeneous catalysis
полимеризация
полилактиды
молочная кислота
гетерогенный катализ
On-line přístup:https://doi.org/10.1016/j.apcata.2017.08.007
Médium: Elektronický zdroj Kapitola
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=656819

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