Raman spectroscopy of sulfonated polystyrene resins

Raman spectroscopy has been applied to the determination of molecular struc tural features in sulfonated polystyrene resins. Comparison with model comp ounds has facilitated the identification of key molecular vibrations which are characteristic of sulfonates and their undissociated acids. Of particul ar importance in the current study is the ability to undertake analysis of these resins in the hydrated state, with various amounts of water being pre sent in the resins. (C) 2000 Elsevier Science B.V. All rights reserved.