The adsorption parameters (a) for members of four classes of saturated hydrocarbons were compared with those observed for the corresponding ethers. The saturated hydrocarbon liquids exhibit a measurable affinity for polystyrene, as indicated by the linear relationships log a f ¼ log a i ¹ D s(N f ¹ N i), each characteristic of the homologous series being considered. These values increase from the linear series H(CH 2) nH (a i ¼ 0.10 ⫾ 0.02; D s ¼ 0.00 ⫾ 0.02) to those having the greatest affinity, members of the cyclic series (CH 2) n, where a i ¼ 0.863 and D s ¼ 0.0875. Even the latter, however, are considerably below the values for the corresponding cyclic ethers (CH 2) nO (a i ¼ 3.31; D s ¼ 0.0888), demonstrating the superiority of an oxygen atom and a methylene unit in affinity for the polymer’s phenyl group.
Посилання на статтю:
Polymer swelling: 22. Molecular structure–affinity correlation studies that involve poly(styrene-co-divinylbenzene) exposed to saturated hydrocarbons / L.A. Errede, George V.D. Tiers // Polymer. – 1999. – N 40. – P. 1567–1575.