Polymers with Unusual Electrical Properties.
Abstract
Poly(octamethylene dibenzimidazole) is an amorphous polymer. When cast from formic acid, crystalline films of the 1:1 complex of benzimidazole/formic acid are obtained. The crystalline polymer shows large peaks in the dielectric constant and loss factor at 120C which are frequency independent, indicating a first order process. The value of the dielectric constant at the top of the peak is about comparable to values obtained for single crystals of ferroelectric substances. Such films also store large amounts of charge on being poled, and exhibit spontaneous current flow and voltage. The variation of the magnitudes of the current, charge, and voltage as a function of time and temperature are discussed, and a rationale is presented for the observed phenomena. There is a reasonable probability that the formic acid complex is ferroelectric.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 04, 1974
- Accession Number
- ADA002440
Entities
People
- Che-hsuing Hsu
- M. Litt
- P. Basu
- T. Noveske
Organizations
- Case Western Reserve University