THERMODYNAMIC INTERACTIONS AND CHARACTERIZATION OF POLY(P-CHLOROSTYRENE) WITH SOME ALIPHATIC AND AROMATIC PROBES BY INVERSE GAS-CHROMATOGRAPHY

Abstract

Some thermodynamic quantities were obtained for the interactions of poly (p-chlorostyrene) with n-pentane, n-hexane, n-heptane, benzene, toluene, isopropylbenzene and n-propylbenzene by the inverse gas chromatography method in the temperature range 150-170-degrees-C. The specific retention volumes (V(g)0), weight fraction activity coefficients of solute probes at infinite dilution (OMEGA1infinity), Flory-Huggins thermodynamic interaction parameters (chi12infinity), interaction parameters based on hard-core volumes (chi12*), effective exchange interaction parameters (X12BAR) of the equation of state theory, between polymer and solutes are given. The molar enthalpy of sorption (DELTAH(s)BAR), the partial molar heat of mixing at infinite dilution (DELTAH-1infinityBAR) and the solubility parameter of polymer (delta2) were also calculated.