Sorption properties of the mixed stationary phase "polydimethylsiloxane-$\beta$-cyclodextrin" in gas chromatography

Sorption and selective properties of the mixed stationary phase based on polydimethylsiloxane and methylated-$\beta$-cyclodextrin were studied by gas chromatographic method in the temperature range 60–180$^\circ$С. It is also established that introduction of macrocyclic adding in polymeric immovable phase results in increasing sorption of organic compounds of different classes (apart from n-alkanes C6-C10 and cyclogegsan) and showing of enantioselectivity, more pronounced for cyclic compounds with polar substituents. A greater role of entropy factors acting in the mixed polymer phase on the sorption of sorbates redistribution.