Polymer swelling. Part 17: Systematization of steric effects on adsorption parameters as exemplified by swelling of poly(styrene-co-divinylbenzene) to saturation using linear and non-linear acyclic aliphatic ether liquids

Abstract

The adsorption parameters (α) for five branched aliphatic ethers were established experimentally in the usual way [17]. It was shown that when this set of α-values is combined with the set already established for the unbranched ethers [17], the union set enables one to estimate with reasonable confidence the α-values for all the possible structural permutations derivable from the general molecular structure [GMS] H(CH 2) m+1[(CH 3) q′CH 2−q′ OCH 2−q(CH 3) q](CH 2) n+1H, and for a portion of those that are derivable from the GMS (CH 3) q′+1CH 2−q′[(CH 2) mO(CH 2) n]CH 2−q(CH 3) q+1, using the corresponding Log α vs N linear relationship deduced in these and earlier sorption studies, in which N = m+n+q+q′+4. It was shown that the data for the α-values derived thereby comprise a self-consistent rigidly interconnected multidimensional universe of linear Log α vs N relationships that represent series of subsets of the above GMSs resulting from varying one integer (m+n+q or ′) while the other three are held constant.