Abstract
Commercially available styrene-ethylene/butylene-styrene triblock polymer (Kraton G 1650) was partially sulfonated using a SO3/triethyl phosphate reagent in a dichloroethane/cyclohexane mixed solvent. Films of the product were cast from lower alcohols to give elastic materials with different degrees of sulfonation (ca. 30–60%) as determined by titration. Transmission electron microscopy suggests that the cast films possess cylindrical sulfonated polystyrene domains. The films swell in water, with the extent of swelling being dependent on the sulfonation level. Ionic conductivities as high as 8.5 × 10−2 S/cm are obtained when fully hydrated, and compare favorably to those exhibited by hydrated, sulfonated fluoropolymers such as Nafion.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
