Abstract
The time domain measurement of polarization reversal is made for melt-quenched, uniaxially-drawn and annealed Nylon 11 samples by applying a stepwise electric field. The amount of reversed polarization of an as-drawn sample is almost independent of the field strength above 80 MV m−1 and gives a value of ca. 50 mC m−2. The switching time is proportional to a power of the field strength. Annealing above 100°C causes a marked increase in switching time but does not change the amount of reversed polarization. X-Ray study shows that annealing results in a change in crystal structure from a pseudohexagonal phase containing distorted conformation into an all-trans triclinic phase. Such a structural change enlarges the potential barrier against the chain rotation to result in the increase in the switching time.
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Takahashi, Y., Shimomura, M., Kutani, M. et al. Ferroelectric Switching Characteristics and Crystal Structure of Nylon 11. Polym J 29, 234–239 (1997). https://doi.org/10.1295/polymj.29.234
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DOI: https://doi.org/10.1295/polymj.29.234
