Dielectric behavior of sulfonic acid–polystyrene films

✍ Scribed by Richard A. Wallace

• Publisher: John Wiley and Sons
• Year: 1973
• Tongue: English
• Weight: 415 KB
• Volume: 17
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1973.070170117

✦ Synopsis

The dielectric properties of partially sulfonated polystyrene films (15% degree of sulfonation) in their dry and slightly wet (4.7% by weight of water content) states were measured over the frequency range between lo2 and lo6 Hz with temperature as a parameter. Loosely crosslinked (1% divinyl benzene) polystyrene films were synthesized and sulfonated with chlorosulfonic acid to a 15% degree of sulfonation. Films containing more than 15% sulfonation were very brittle. Dielectric constant and loss data of these sulfonic acid films are presented at various temperatures and are correlated in terms of Cole-Cole plots. The dielectric response characteristics of these films find application in the electroformation of sulfonated polymer electrets, which have been shown to possess a high degree of polarizability and are capable of storing large amounts of electric charge.