Thiol and disulfide additon to the pendant vinylbenzene groups of poly(divinylbenzene-co-ethylvinylbenzene), including Amberlite XAD-4

摘要

Laboratory-prepared poly(divinylbenzen-co-ethylvinylbenzene) resin and the commercial version, Amberlite XAD-4, were modified by the anti-Markovnikov addition of thiols to the pendant vinylbenzene groups, linking fucntional groups through a thioether-dimethlene spacr to the resin. Compared to lab-made resins, Amberlite XAD-4, which has a much higher surface area and porosity, could be thiol-modified to a greater extent. Disulfide addition was then done to the pendant vinylbenzene groups of XAD-4 exclusively.