Physical and Thermodynamic Properties of Poly(2-phenyl-1,3-dioxolane-4-yl-methyl-methacrylate-coethylmethacrylate) Polymer with Inverse Gas Chromatography

Abstract

In this study, the physical and thermodynamic properties of poly(2- phenyl-1,3-dioxolane-4-yl-methyl-methacrylate-co-ethylmethacrylate) (PDMMA-EM) were investigated by using inverse gas chromatography. Two groups of alcohols and alkanes with different chemical natures and polarities were used to obtain some properties of (PDMMA-EMsolvent) systems. The specific retention volume, V_g⁰, glass transition temperature, Tg, the sorption enthalpy, ΔH₁^S, sorption free energy, ΔG₁^S, sorption entropy, ΔS₁^S, the weight fraction activity coefficients of solute probes at infinite dilution, Ω₁^∞ and Flory-Huggins interaction parameters, χ₁₂^∞, between polymer and solvents were determined in the temperature range of 333-473 K. The solubility parameters of PDMMA-EM at infinite dilution was also found by plotting the graph of [δ₁² - (ΔG₁^∞/V₁)] versus solubility parameters, δ₁, of probes.