Influence of lactic acid on the catalytic performance of MDABCO for ring-opening polymerization of L-lactide

Zhixiong Luo, Somboon Chaemchuen, Kui Zhou, Andres Alvarado Gonzalez, Francis Verpoort

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)15-21
Number of pages7
JournalApplied Catalysis A: General
Volume546
DOIs
Publication statusPublished - 25 Sep 2017

Fingerprint

Ring opening polymerization
Lactic acid
Lactic Acid
Metals
Catalyst activity
Polymerization
Structural properties
Nitrates
Zinc
Catalysts
Acids
dilactide
triethylenediamine

Keywords

  • Heterogeneous catalysis
  • Lactic acid
  • MDABCO MOFs
  • Polylactide
  • Ring-opening polymerization

ASJC Scopus subject areas

  • Catalysis
  • Process Chemistry and Technology

Cite this

Influence of lactic acid on the catalytic performance of MDABCO for ring-opening polymerization of L-lactide. / Luo, Zhixiong; Chaemchuen, Somboon; Zhou, Kui; Gonzalez, Andres Alvarado; Verpoort, Francis.

In: Applied Catalysis A: General, Vol. 546, 25.09.2017, p. 15-21.

Research output: Contribution to journalArticle

Luo, Zhixiong ; Chaemchuen, Somboon ; Zhou, Kui ; Gonzalez, Andres Alvarado ; Verpoort, Francis. / Influence of lactic acid on the catalytic performance of MDABCO for ring-opening polymerization of L-lactide. In: Applied Catalysis A: General. 2017 ; Vol. 546. pp. 15-21.
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