Polymer swelling. XXIII. Molecular structure-affinity correlation studies involving poly(styrene-co-divinylbenzene) exposed to acyclic olefinic liquids

• Published in: Journal of applied polymer science Vol. 73; no. 9; pp. 1583 - 1609
• Main Authors: Errede, L. A., Tiers, George V. D.
• Format: Journal Article
• Language: English
• Published: New York John Wiley & Sons, Inc 29.08.1999; Wiley
• Subjects: adsorption parameter (α); Applied sciences; ethylenes; Exact sciences and technology; Miscellaneous; Organic polymers; Physicochemistry of polymers; polymer swelling; polystyrene; Properties and characterization; Crosslinked copolymer; Benzene(divinyl) copolymer; Olefin; Molecular structure; Liquid absorption; Absorptivity; Property structure relationship; Experimental study; Molecular weight property relation; Styrene copolymer
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/(SICI)1097-4628(19990829)73:9<1583::AID-APP1>3.0.CO;2-1

The adsorption parameters (α) of 45 olefinic liquids with respect to poly(styrene‐co‐divinylbenzene) were established gravimetrically in the usual way. Those for the structures that comprise RaRbCCRcRd, where each R is H or an alkyl group, can be fitted to log αf = log αi − Ds(Nf − Ni) relationships, where Ni and Nf are the initial and final number of mass units in the subseries of the above general molecular structure (GMS). The constant αi reflects the number of methyl groups in lieu of H atoms and their positional relationship to each other on the double bond, whereas the constant Ds reflects the unit change in log αi caused by incrementation of a (CH2)nR substituent from n = 1 to its allowable limit while the rest of the molecular structure is kept constant. The results observed thereby confirm that these adsorption phenomena involve a liaison between the pendent phenyl groups of the sorbent polymer and the double bond of the sorbate liquid. The adsorption data accumulated in these studies show that in the cases of olefinic liquids carrying other kinds of functional groups, such as aromatic or ether groups, the adsorption preference usually favors the other functionality, leaving the olefinic group in the “nonadsorbed” portion of the adsorbed molecule where it can exert a positive influence on adsorptivity due to dynamic associative interactions with the mobile sorbed molecules of its own kind. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 1583–1609, 1999