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 School of Chemistry & Applied Biomedical Sciences

Research output: Contribution to journal › Article

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 language	English
Pages (from-to)	15-21
Number of pages	7
Journal	Applied Catalysis A: General
Volume	546
DOIs	https://doi.org/10.1016/j.apcata.2017.08.007
Publication status	Published - 25 Sep 2017

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Keywords

Heterogeneous catalysis
Lactic acid
MDABCO MOFs
Polylactide
Ring-opening polymerization

ASJC Scopus subject areas

Catalysis
Process Chemistry and Technology

Cite this

Luo, Z., Chaemchuen, S., Zhou, K., Gonzalez, A. A., & Verpoort, F. (2017). Influence of lactic acid on the catalytic performance of MDABCO for ring-opening polymerization of L-lactide. Applied Catalysis A: General, 546, 15-21. https://doi.org/10.1016/j.apcata.2017.08.007

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

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.",

keywords = "Heterogeneous catalysis, Lactic acid, MDABCO MOFs, Polylactide, Ring-opening polymerization",

author = "Zhixiong Luo and Somboon Chaemchuen and Kui Zhou and Gonzalez, {Andres Alvarado} and Francis Verpoort",

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AU - Luo, Zhixiong

AU - Chaemchuen, Somboon

AU - Zhou, Kui

AU - Gonzalez, Andres Alvarado

AU - Verpoort, Francis

PY - 2017/9/25

Y1 - 2017/9/25

N2 - 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.

AB - 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.

KW - Heterogeneous catalysis

KW - Lactic acid

KW - MDABCO MOFs

KW - Polylactide

KW - Ring-opening polymerization

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10.1016/j.apcata.2017.08.007