Guckert, Fernando Elias, et al. European Polymer Journal 187 (2023): 111926.
Enzymes are increasingly valued for the synthesis of polybutylene succinate (PBS) for biomedical applications due to their high selectivity, lower operating temperatures, absence of toxic metals, and reusability. Therefore, this work aims to investigate the enzyme-catalyzed polycondensation in solution, using diethyl succinate (DS) and 1,4-butanediol (BDO) as monomers, Novozym 435 as the biocatalyst, and diphenyl ether as the solvent.
PBS Production: The experiment was conducted with equimolar monomers under magnetic stirring at approximately 400 rpm and vacuum (0.1 atm) at different temperatures (70, 80, and 90 °C). For each synthesis, 0.1 mol of DS (17.42 g) and 0.1 mol of BDO (9.01 g) were used. The amount of Novozym 435 (N435) used was 10 wt% (relative to the total mass of monomers), equivalent to 2.64 g of biocatalyst. For the reactions in solution, 5 wt% (1.32 g) and 50 wt% (13.21 g) diphenyl ether (DE) were used to reduce the viscosity of the reaction medium. The condenser of the experimental setup was set to 5 °C to condense the reaction byproducts, with collections and weighing every 5 minutes to study the kinetics of each experimental run. The reaction time ranged from 60 to 90 minutes. The reaction's completion was determined based on the high viscosity of the medium, which made further homogenization via magnetic stirring impossible. Additionally, the molecular weight distribution of the PBS samples was measured at the end of each reaction.
Li, Hongwei, et al. Applied Energy 200 (2017): 119-131.
Diethyl succinate (DES) is a novel and efficient solvent for carbon dioxide (CO2) absorption. Gas-liquid equilibrium data for the CO2 + DES system were obtained experimentally using a gas-phase recirculation method, with measurements taken from 288.15 K to 318.15 K. The data were modeled using the Kritchevsky-Kasarnovsky model and the Peng-Robinson equation of state. The gas-liquid equilibrium data of the DES system were compared with those of the diethyl carbonate (DEC) and dimethyl carbonate (DMC) systems, revealing that the Henry's constants followed the order: DES < DEC < DMC. Absorption and desorption energy simulations using Gaussian 09 software indicate that DES has superior CO2 absorption capacity compared to DEC and DMC. When N2 gas is used for stripping and desorption, the DES system is more cost-effective than the DEC and DMC systems.
What is the molecular weight of diethyl succinate?
The molecular weight of diethyl succinate is 174.19.
What is the IUPAC name of diethyl succinate?
The IUPAC name of diethyl succinate is Diethyl butanedioate.
What is the boiling point of diethyl succinate?
The boiling point of diethyl succinate is 218 °C.
What is the melting point of diethyl succinate?
The melting point of diethyl succinate is -20 °C.
Is diethyl succinate soluble in water?
Diethyl succinate is slightly soluble in water.
What is the appearance of diethyl succinate?
The appearance of diethyl succinate is clear colorless to yellow liquid.
What is the purity level of diethyl succinate?
The purity of diethyl succinate is 99%.
What is the storage condition recommended for diethyl succinate?
It is recommended to store diethyl succinate below +30 °C.
What are the synonyms for diethyl succinate?
The synonyms for diethyl succinate are Clorius.
What are the features and benefits of diethyl succinate?
The features and benefits of diethyl succinate include high quality products, fast delivery, and the option to order additional products.
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