Issue 7, 2019

Kinetic study of TBD catalyzed δ-valerolactone polymerization using a gas-driven droplet flow reactor

Abstract

The kinetics of aliphatic polyester synthesis is critical to understanding the mechanism of ring-opening polymerization and making the reaction more controllable. In this paper, we introduce a gas-driven droplet flow reactor to determine the reaction kinetics of 1,5,7-triazabicyclo[4.4.0]dec-5-ene (TBD) catalyzed δ-valerolactone polymerization. Only 2 mL reaction solution was used for each test, which significantly reduced the work in preparing the anhydrous reactants. The experimental results indicated that the orders of the catalyst and the alcohol in the kinetic model are close to 1 and 0, respectively, and therefore the rate-determining step was the activation reaction between the monomer and catalyst. Then, the activated monomer quickly reacts with the end hydroxyl in the polymer chain to finish the reaction. In the end, we calculated the activation energy of the rate-determining reaction, which is only 7.302 ± 0.047 kJ mol−1.

Graphical abstract: Kinetic study of TBD catalyzed δ-valerolactone polymerization using a gas-driven droplet flow reactor

Supplementary files

Article information

Article type
Paper
Submitted
29 Jan 2019
Accepted
11 Mrz 2019
First published
12 Mrz 2019

React. Chem. Eng., 2019,4, 1189-1194

Kinetic study of TBD catalyzed δ-valerolactone polymerization using a gas-driven droplet flow reactor

S. Lu and K. Wang, React. Chem. Eng., 2019, 4, 1189 DOI: 10.1039/C9RE00046A

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