Abstract
The authors have investigated nylon 5,7 as a piezoelectric polymer which can potentially exhibit very high activity. Nylon 5,7 is synthesized using improved procedures, and the product polymer is characterized by X-ray diffraction, calorimetry, and the thermally stimulated current. Films are prepared by quenching from the melt. The piezoelectric response is compared to that of other polyamides. Initial measurements a field strength of 175 kV/cm resulted in a piezoelectric strain coefficient d31 = 0.4 pC/N. By comparison, d31 values in the literature for nylon 11 and nylon 9 at 400 kV/cm are 0.6 and 1.1 pC/N, respectively (film-forming conditions, poling time, and temperature being the same). This indicates that at an equivalent field strength, nylon 5,7 could surpass the piezoelectric activity of nylon 9 and verify the theoretical prediction of increased activity in the lower, odd nylons.
| Original language | English (US) |
|---|---|
| Pages | 256-260 |
| Number of pages | 5 |
| State | Published - 1988 |
| Event | Proceedings of the 6th International Symposium on Electrets (ISE 6) - Oxford, England Duration: Sep 1 1988 → Sep 3 1988 |
Other
| Other | Proceedings of the 6th International Symposium on Electrets (ISE 6) |
|---|---|
| City | Oxford, England |
| Period | 9/1/88 → 9/3/88 |
ASJC Scopus subject areas
- General Engineering