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Abstract
Poly(glycerol citrate) is a biodegradable aliphatic polyester made of citric acid and glycerol. Because of the high functionality of the reactants, citric acid—4 and glycerol—3, there are many possibilities for creating different polymer chain structures. In this work, the polycondensation of citric acid with glycerol and its kinetics were studied through the kinetic model, allowing for estimation of relevant kinetic constants values for the first time with the employment of a genetic algorithm. The proposed kinetic model is multidimensional and contains eight parameters. The values of kinetic constants of the reaction included in our kinetic model were estimated. Relevant Arrhenius plots justify the applied model because of values of the R2 coefficient of nearly 1.0. Considerations on the competitiveness of various reactionary acts are presented.
Highlights
Poly(glycerol citrate) (PGCit) is a biodegradable aliphatic polyester[1] made of citric acid[2,3] and glycerol.[4]
Ester structure was confirmed by measurement of Esterification degree (ED), Fourier transform infrared spectroscopy (FTIR), algorithm
The genetic algorithm had no problems with convergence and it minimized the objective function efficiently
Summary
Poly(glycerol citrate) (PGCit) is a biodegradable aliphatic polyester[1] made of citric acid[2,3] and glycerol.[4] The use of these monomers has many potential application advantages.[5] Glycerol is essential in many important metabolic pathways in cells.[6] It forms the backbone of many fats, including triglycerides and phospholipids,[7] which is crucial in building the cell membrane.[8] Citric acid is an important intermediate product in the Krebs cycle (the citric acid cycle).[9] it is considered nontoxic and biodegradable in living organisms.[10] it is one of the most popular and used organic acids in the industry.[11] It is often used as an acidity regulator[12] and antioxidant.[13] In turn, glycerol is a waste in the production of biodiesel.[14] The management of these two substances is dictated by the principles of ecology and green chemistry.[15]
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