Ring-Opening Polymerization of l-Lactide to Cyclic Poly(Lactide) by Zeolitic Imidazole Framework ZIF-8 Catalyst

Zhixiong Luo, Somboon Chaemchuen, Kui Zhou, Francis Verpoort

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

The catalytic activity of ZIF-8 in the ring-opening polymerization of l-lactide without solvents or cocatalysts is presented for the first time. Two different synthetic strategies have been applied for synthesizing ZIF-8, either under solvothermal condition or by spray-drying procedure. Their catalytic activities are found to be correlating with the presence of open active sites in ZIF-8 structure. The structural defects that afford active acid and basic sites are supposed to cooperatively catalyze the reaction. ZIF-8 assembled by spray-drying technique, displays a superior catalytic activity at temperature of 160 °C, leading to the formation of high molecular weight cyclic polylactide. The ZIF-8 catalysts could be recycled and reused without any significant loss of catalytic activity.

Original languageEnglish
Pages (from-to)4135-4139
Number of pages5
JournalChemSusChem
Volume10
Issue number21
DOIs
Publication statusPublished - 9 Nov 2017

Keywords

  • heterogeneous catalysis
  • metal–organic frameworks
  • polymerization
  • structural defects
  • zeolites

ASJC Scopus subject areas

  • Environmental Chemistry
  • Chemical Engineering(all)
  • Materials Science(all)
  • Energy(all)

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