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Solubility and sorption energetics of methyl salicylate in chloro‐butyl rubber
Author(s) -
Bakken Egil
Publication year - 2008
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.28930
Subject(s) - enthalpy , solubility , butyl rubber , sorption , chemistry , hildebrand solubility parameter , thermodynamics , standard enthalpy of reaction , natural rubber , enthalpy of mixing , flory–huggins solution theory , enthalpy change of solution , materials science , organic chemistry , polymer , physics , adsorption
Equilibrium 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, H abs , of MS(g) in CIIR and the partial molar enthalpy of mixing, H mix , of MS(l) in CIIR are derived from the measured isotherms. The enthalpies are regarded as constant in the present concentration interval, and H abs and H mix 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