Abstract
AbstractEquilibrium solubilities of methyl salicylate (MS) in chloro‐butyl rubber (CIIR) are measured at 318 and 333 K at several MS vapor pressures. The partial molar enthalpy of absorption, Habs, of MS(g) in CIIR and the partial molar enthalpy of mixing, Hmix, of MS(l) in CIIR are derived from the measured isotherms. The enthalpies are regarded as constant in the present concentration interval, and Habs and Hmix are −50.3 ± 3 kJ (mol MS(g))−1 and 4.7 ± 3 kJ (mol MS(l))−1, respectively. The Flory interaction parameter is calculated from the enthalpy of mixing, and the obtained Flory solution model agrees well with the present solubility data. © 2008 Wiley Periodicals, Inc. J Appl Polym Sci, 2008
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