Mass Spectrometric Characterization of Polystyrene Cross - Linked with Pure m- and Pure p-Divinylbenzene

Abstract
Mass spectral data for polystyrene and its copolymers with 8% pure m- and 8% pure p-divinylbenzene show characteristic differences. Polystyrene is differentiated by the enhanced M/e 193 over 194, 207, and 208 peaks; the reverse relative intensities being observed for the copolymers. The para copolymer has characteristic peaks at 222, 235, and 236 m/e which do not appear in the spectra of either the meta copolymer or polystyrene. The last is tentatively assigned to the [3, 3]-paracyclophane structure formed in a γ-hydrogen rearrangement from adjacent p-DVB units fragmented from the copolymer network.

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