Sulfonated EPDM ionomers(S-EPDM) were prepared with concentrated sulfuric acid and acetic anhydride.

• 用浓硫酸和醋酸酐与三元乙丙橡胶 (EPDM)反应制备了磺化三元乙丙橡胶离聚物 (S -EPDM)。