The purpose of this study is to make use of the advantages of both polyvinylidene fluoride (PVDF) and polyacrylonitrile (PAN) to fabricate a flexible electronic device. Polyvinylidene fluoride (PVDF)/polyacrylonitrile (PAN) composite fibrous mats with different blend ratios were fabricated using electrospinning. The effects of PVDF and PAN mass ratio on fiber morphology, chemical structure, thermal stability, and piezoelectric properties of the produced composite fibers were investigated by scanning electron microscopy (SEM), X-ray diffractometry (XRD), Fourier transform infrared spectroscopy (FTIR), thermogravimetry (TG), and piezoelectric tester. The SEM images showed that the PVDF/PAN composite nanofibers were fabricated successfully and fiber diameters increased with the increase of PVDF content. The FTIR and XRD analyses showed that both the α- and β-crystal phases existed in PVDF/PAN composite fibers. The thermal stability of PVDF/PAN fibrous mats was less than that of neat PVDF fibers. The piezoelectric properties of PVDF/PAN fibrous mats were significant and a function of PVDF content. The output voltage of PVDF/PAN fibrous mats increased from 1.2 to 5.0 V as PVDF content increased from 20 to 100%. The piezoelectric voltages of PVDF/PAN composite nanofibers also increased with the increase of impacting force. Tensile and contact angle testing indicated that the PVDF/PAN fibrous mats were more flexible and hydrophilic than neat PVDF membrane. PVDF/PAN nanocomposite fiber mats were observed suitable for potential application in flexible electronic devices.

中文翻译：

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电纺聚偏二氟乙烯/聚丙烯腈复合纤维：制造与表征

这项研究的目的是利用聚偏二氟乙烯（PVDF）和聚丙烯腈（PAN）的优势来制造柔性电子设备。采用静电纺丝法制备了不同配比的聚偏二氟乙烯（PVDF）/聚丙烯腈（PAN）复合纤维毡。通过扫描电子显微镜（SEM），X射线衍射（XRD），傅立叶变换红外光谱（FTIR）研究了PVDF和PAN质量比对所制备复合纤维的纤维形态，化学结构，热稳定性和压电性能的影响。 ），热重法（TG）和压电测试仪。SEM图像表明，PVDF / PAN复合纳米纤维的制备成功，纤维直径随着PVDF含量的增加而增加。FTIR和XRD分析表明，PVDF / PAN复合纤维中同时存在α和β晶相。PVDF / PAN纤维毡的热稳定性低于纯PVDF纤维的热稳定性。PVDF / PAN纤维毡的压电性能非常重要，并且是PVDF含量的函数。随着PVDF含量从20％增加到100％，PVDF / PAN纤维毡的输出电压从1.2 V增加到5.0V。PVDF / PAN复合纳米纤维的压电电压也随着冲击力的增加而增加。拉伸和接触角测试表明，PVDF / PAN纤维毡比纯净的PVDF膜更具柔韧性和亲水性。观察到PVDF / PAN纳米复合纤维毡适合在柔性电子设备中潜在应用。PVDF / PAN纤维毡的热稳定性低于纯PVDF纤维的热稳定性。PVDF / PAN纤维毡的压电性能非常重要，并且是PVDF含量的函数。随着PVDF含量从20％增加到100％，PVDF / PAN纤维毡的输出电压从1.2 V增加到5.0V。PVDF / PAN复合纳米纤维的压电电压也随着冲击力的增加而增加。拉伸和接触角测试表明，PVDF / PAN纤维毡比纯净的PVDF膜更具柔韧性和亲水性。观察到PVDF / PAN纳米复合纤维毡适合在柔性电子设备中潜在应用。PVDF / PAN纤维毡的热稳定性低于纯PVDF纤维的热稳定性。PVDF / PAN纤维毡的压电性能非常重要，并且是PVDF含量的函数。随着PVDF含量从20％增加到100％，PVDF / PAN纤维毡的输出电压从1.2 V增加到5.0V。PVDF / PAN复合纳米纤维的压电电压也随着冲击力的增加而增加。拉伸和接触角测试表明，PVDF / PAN纤维毡比纯净的PVDF膜更具柔韧性和亲水性。观察到PVDF / PAN纳米复合纤维毡适合在柔性电子设备中潜在应用。随着PVDF含量从20％增加到100％，PVDF / PAN纤维毡的输出电压从1.2 V增加到5.0V。PVDF / PAN复合纳米纤维的压电电压也随着冲击力的增加而增加。拉伸和接触角测试表明，PVDF / PAN纤维毡比纯净的PVDF膜更具柔韧性和亲水性。观察到PVDF / PAN纳米复合纤维毡适合在柔性电子设备中潜在应用。随着PVDF含量从20％增加到100％，PVDF / PAN纤维毡的输出电压从1.2 V增加到5.0V。PVDF / PAN复合纳米纤维的压电电压也随着冲击力的增加而增加。拉伸和接触角测试表明，PVDF / PAN纤维毡比纯净的PVDF膜更具柔韧性和亲水性。观察到PVDF / PAN纳米复合纤维毡适合在柔性电子设备中潜在应用。