Sulfonation distribution in sulfonated polystyrene ionomers measured by MALDI-ToF MS
Matrix-assisted laser desorption ionization time-of-flight mass spectrometry (MALDI-ToF MS) was used to quantify the sulfonation level and sulfonation distribution of sulfonated polystyrene ionomers prepared by homogeneous solution sulfonation. The sulfonation levels obtained by MALDI-ToF MS and acid–base titration were compared, and the sulfonate distributions determined by MALDI-ToF MS were compared with theoretical random distributions. The results indicate that the sulfonation reaction used produces a sample with a random sulfonate distribution.
ACS Macro Letters
Zhang, Longhe; Katzenmeyer, Bryan C.; Cavicchi, Kevin A.; Weiss, Robert; and Wesdemiotis, Chrys, "Sulfonation distribution in sulfonated polystyrene ionomers measured by MALDI-ToF MS" (2013). Polymer Engineering Faculty Research. 1995.