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090 _a656819
100 _a20171213a2017 k y0engy50 ba
101 0 _aeng
135 _adrcn ---uucaa
181 0 _ai
182 0 _ab
200 1 _aInfluence of lactic acid on the catalytic performance of MDABCO for ring-opening polymerization of l-lactide
_fLuo Zhixiong [et al.]
203 _aText
_celectronic
300 _aTitle screen
320 _a[References: p. 20-21 (42 tit.)]
330 _aA 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.
333 _aРежим доступа: по договору с организацией-держателем ресурса
461 _tApplied Catalysis A: General
463 _tVol. 546
_v[P. 15–21]
_d2017
610 1 _aэлектронный ресурс
610 1 _aтруды учёных ТПУ
610 1 _aRing-opening polymerization
610 1 _apolylactide
610 1 _aMDABCO MOFs
610 1 _alactic acid
610 1 _aheterogeneous catalysis
610 1 _aполимеризация
610 1 _aполилактиды
610 1 _aмолочная кислота
610 1 _aгетерогенный катализ
701 0 _aLuo Zhixiong
701 0 _aChaemchuen
_bS.
_cchemist-technologist
_cresearcher at Tomsk Polytechnic University
_f1984-
_gSomboon
_2stltpush
_3(RuTPU)RU\TPU\pers\42620
701 0 _aZhou Kui
701 1 _aGonzalez
_bA. A.
_gAndres Alvarado
701 1 _aVerpoort
_bF. V. K.
_cchemist-technologist
_cProfessor of Tomsk Polytechnic University, doctor of chemical Sciences
_f1963-
_gFrensis Valter Kornelius
_2stltpush
_3(RuTPU)RU\TPU\pers\35059
712 0 2 _aНациональный исследовательский Томский политехнический университет (ТПУ)
_bИнститут природных ресурсов (ИПР)
_bКафедра технологии органических веществ и полимерных материалов (ТОВПМ)
_h6832
_2stltpush
_3(RuTPU)RU\TPU\col\18659
801 2 _aRU
_b63413507
_c20181224
_gRCR
856 4 _uhttps://doi.org/10.1016/j.apcata.2017.08.007
942 _cCF