Polystyrene‐co‐4‐hydroxystyrene ionomers (3.0–22 mol%) were synthesized via neutralization of demethylated polystyrene‐co‐4‐methoxystyrene. The physical properties of the ionomers as well as their nonionic precursors were studied by calorimetry, torsion pendulum and small‐angle X‐ray scattering (SAXS). Evidence for ion aggregation was obtained for the styrene‐4‐hydroxystyrene ionomers from SAXS and torsion pendulum studies.
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Clas et al. (1986) studied this question.
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