Characterization of Thermodynamic Properties of 3-N-Butyl-6-(1-Decyl Olefinic Acid Base)-4-Cyclohexene Diacid by Inverse Gas Chromatography

The dispersive-free energy and acid-base forces of 3-n-butyl-6-(1-decyl olefinic acid base)-4-cyclohexene diacid were investigated by inverse gas chromatography. Five nonpolar and 5 polar solvents were used between 353K and 413K. By using the retention times of nonpolar and polar probes in the infinite dilution region, adsorption thermodynamic parameters, including the adsorption enthalpy by acid-base interactions and the molar-free adsorption energy of acid-base interaction were evaluated. The results showed that 3-n-butyl-6-(1-decyl olefinic acid base)-4-cyclohexene diacid has low surface energy dispersion and is a Lewis amphoteric material with predominantly basic character. These results were confirmed by the Lewis acidity and basicity constants. Because the surface energy dispersion of inorganic fillers was higher than modified inorganic fillers, and the compatibility of inorganic fillers with the polymers was poor, the inorganic fillers should be modified with 3-n-butyl-6-(1-decyl olefinic acid base)-4-cyclohexene diacid to reduce the surface energy.