The use of the flory-huggins interaction parameter for the characterization of vacuum distillation residue fractions of mineral oils

Inverse gas chromatography. Relationship between mass activity coefficient and flory-huggins interaction parameter in the examination of petroleum pitches

“…The materials used in this work as stationary phases in inverse gas chromatographic (IGC) experiments were vacuum distillation residues from three oils: i) Baltic Sea oil (Polish west coast region), ii) FlottaBlend oil (North Sea) and iii) Pipe Oil (Russia -southwest region) and fractions collected during their separation [11]. The materials to be examined were coated (20 % w/w) onto Chromosorb P (80-100 mesh).…”

“…Saturated vapour pressures were taken from Refs. [11][12][13][14][15]. The values of second virial coefficient Bll were calculated according to [16].…”

“…The importance of this parameter has been discussed elsewhere [1,11]. Here we like to indicate only that the Flory-Huggins interaction parameter was used, e.g.…”

“…in monitoring the behaviour of polymer blends under varying temperature [1]. It was also used in the characterization of fractions separated from high-boiling vacuum distillation residues of petroleum [11]. Taking into account Eq.…”

Properties of materials as determined by inverse gas chromatography

“…Voelkel and Fall [20] have shown that the significant variation in the second virial coefficient data possibly collected from different sources may affect the final result, i.e. the value of physicochemical parameter.…”