Electric antibacterial effect of piezoelectric poly(lactic acid) fabric
| Autor: | Koichi Hosoya, Takumi Kenichiro, Onishi Osamu, Tamakura Daiji, Ando Masamichi, Takafumi Inoue, Ryo Todo, Tetsuya Yamanaga |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Materials science
Physics and Astronomy (miscellaneous) Scanning electron microscope technology industry and agriculture General Engineering General Physics and Astronomy Piezoelectricity law.invention Protein filament law Electric field parasitic diseases Slippage Elongation Crystallization Composite material Voltage |
| Zdroj: | Japanese Journal of Applied Physics. 58:SLLD09 |
| ISSN: | 1347-4065 0021-4922 |
| DOI: | 10.7567/1347-4065/ab3b1b |
| Popis: | Poly(lactic acid) (PLA) has a high piezoelectric constant due to molecular orientation by uniaxial elongation and crystallization by heat treatment. The piezoelectric constant of PLA yarn is approximately 10 pCN−1. In our previous study, we reported the strong antibacterial effect of piezoelectric PLA fabrics that we had developed with fabric extension and contraction [Ando et al., Jpn. J. Appl. Phys. 56, 10PG01 (2017)]. In this study, we simulated the generating voltage of the yarn under tensile stress, considering filament slippage among adjacent filaments. Measurements were conducted to confirm the generating voltage and resulting electric field strength. Further, we confirmed that the growth of bacteria was suppressed, based on the electric field that formed in the fabric. Testing of the fabrics across multiple production lots repeatedly revealed a strong antibacterial effect, and scanning electron microscope image of dead bacteria in the fabric was different from those under the heat, drying and acid test. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|