Modeling liquid-vapor equilibrium and density data of carbon dioxide + acrylic acid binary mixtures at high pressure

MATÍAS MENOSSI; MIRIAM STRUMIA; SÉVERINE CAMY; JUAN MANUEL MILANESIO; MATHIAS DESTARAC

Ciudad Real

Congreso; 17th European Meeting on Supercritical Fluids (EMSF 2019); 2019

Universidad de Castilla - La Mancha

Supercritical CO2 (scCO2) can be used in polymer synthesis, as many monomers are soluble at relatively moderate conditions1. It can solubilize low molecular weight non-polar molecules, slightly polar molecules, and even carboxylic acids2. However, the synthesized polymers are typically insoluble in scCO2, precipitating from the reactive mixture3. As an example, Poly(acrylic acid) (PAA) has been polymerized successfully by precipitation polymerization in a batch reactor4 and by continuous precipitation polymerization5. One of the most important parameters for continuous polymerization is the density of the reactive mixture. The residence time and the flow rates of each component depend on the density of the reactive mixture.