NMR Characterization of Sulfonation Blockiness in Copoly(styrene-sulfonated styrene) Dickinson, L. Charles ; Weiss, R. A. ; Wnek, Gary E. Abstract Publication: Macromolecules Pub Date: April 2001 DOI: 10.1021/ma0016275 Bibcode: 2001MaMol..34.3108D