Synthesis in pilot plant scale and physical properties of sulfonated polystyrene

By C. R. Martins, G. Ruggeri, Marco Aurélio De Paoli. 2003

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The homogenous sulfonation of polystyrene was developed in a pilot plant scale producing polymers with different sulfonation degrees (18 to 22 mole % of sulfonated styrene units). The reaction yield depends chiefly on the concentration ratio of acetyl sulfate and polystyrene. The morphological and thermal properties of the sulfonated polystyrene obtained by homogeneous sulfonation were studied by means of scanning electron microscopy, differential scanning calorimetry and thermogravimetry. The glass transition temperature of sulfonated polystyrene increases in relation to pure polystyrene and DCp was evaluated in order to confirm the strong interactions among the ~SO3H groups.

Subfields: Environmental Chemistry, Organic Chemistry, Polymers and Plastics

View Paper: https://www.semanticscholar.org/paper/78eebba1582e581e0fb2c12556093d2c67c1b80e