Jessica E. Coughlin, Andreas Reisch, Marie Z. Markarian and Joseph B. Schlenoff Sulfonation of polystyrene: Toward the “ideal” polyelectrolyte Journal of Polymer Science Part A: Polymer Chemistry 51
The sulfonation of polystyrene powder is carried out with concentrated sulfuric acid and an elevated temperature. Fully sulfonated polystyrene chains are obtained with no chain scission or crosslinking, as observed with size exclusion chromatography, dynamic light scattering, and elemental analysis. Kinetic studies show that particle size, acid concentration, and temperature strongly influence the conversion rate. Perdeuterated poly(styrene sulfonate) is also prepared with D2SO4.
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