POLYMER SWELLING .10. SORPTION OF 1-BROMOALKANES BY POLY(STYRENE-CO-DIVINYLBENZENE)

The results observed in this sorption study are qualitatively similar to, but quantitatively different from, those observed in earlier sorption studies of liquids that comprise homologous series of the type Z(CH2)nH, where Z is a phenyl, iodo, or chioro substituent. These results confirm mathematical relationships deduced earlier that show how the number,αn, of absorbed molecules per accessible phenyl group in the polymer at liquid saturation decreases with n, and also how αn correlates with the corresponding solubility parameter, δn, of the test liquid. The parameters of these equations for a given Z(CH2)nH series are characteristic of Z, and they appear to reflect the net result of the electronic nature and the "bulkiness" of that substituent as described in the text. The physical significance of α and some of the implications thereof are discussed. © 1990 American Chemical Society.