Journal of Chemical Thermodynamics, Vol.42, No.6, 758-763, 2010
Phase behaviour for the (carbon dioxide+2-phenoxyethyl acrylate) and (carbon dioxide+2-phenoxyethyl methacrylate) systems at temperatures from (313.2 to 393.2) K and pressures from (5 to 31) MPa
The solubility curves for the (carbon dioxide + 2-phenoxyethyl acrylate) and (carbon dioxide + 2-phenoxyethyl methacrylate) systems were determined by a static view cell apparatus at five temperatures (313.2, 333.2, 353.2, 373.2, and 393.2) K as well as pressures up to 31.43 MPa. Two (carbon dioxide + (meth)acrylate) systems had continuous critical mixture curves with maxima in pressure located between the critical temperatures of carbon dioxide and 2-phenoxyethyl (meth)acrylate. The solubility of 2-phenoxyethyl (meth)acrylate in the (carbon dioxide + 2-phenoxyethyl (meth)acrylate) systems increases as the temperature increases at a fixed pressure. The (carbon dioxide + 2-phenoxyethyl acrylate) and (carbon dioxide + 2-phenoxyethyl methacrylate) systems exhibit type-I phase behaviour. The experimental results for the (carbon dioxide + 2-phenoxyethyl acrylate) and (carbon dioxide + 2-phenoxyethyl methacrylate) systems correlate with the Peng-Robinson equation of state using a van der Waals one-fluid mixing rule including two adjustable parameters. The critical properties of 2-phenoxyethyl acrylate and 2-phenoxyethyl methacrylate were predicted with the Joback and Lee-Kesler method. (C) 2010 Elsevier Ltd. All rights reserved.
Keywords:Carbon dioxide;2-Phenoxyethyl acrylate;2-Phenoxyethyl methacrylate;High-pressure phase behaviour