Department of Industrial Chemistry "Toso Montanari", Bologna University, Viale Risorgimento 4, I-40136, Bologna, Italy.
Department of Industrial Chemistry "Toso Montanari", Bologna University, Viale Risorgimento 4, I-40136, Bologna, Italy.
Carbohydr Polym. 2021 Feb 15;254:117304. doi: 10.1016/j.carbpol.2020.117304. Epub 2020 Oct 24.
In this work we present a simple, inexpensive, and easily scalable industrial paper process to prepare sheets of conductive cellulose fibers coated with polyanilines. First, bare fibers were coated by in situ oxidative polymerization of polyaniline then, the resulting composite fibers were used to fabricate electroactive sheets. The resistivity of the sheets is 14 ± 1 Ω sq, a value around 1000 times lower than those reported in literature. The superior electronic proprieties of the sheets were demonstrated by assembling a capacitive touch sensor device with optimized geometry. The touch sensor shows an increase of 3-4 % of the starting electric capacity after compression and a fast response time of 52 ms. To our knowledge this is the first time that a device is prepared in this way and therefore, the herein presented results can bring an significant improvement in the development of low-cost, green and high-tech electronic devices.
在这项工作中，我们提出了一种简单、廉价且易于扩展的工业纸张处理方法，用于制备涂有聚苯胺的导电纤维素纤维薄片。首先，通过苯胺的原位氧化聚合对裸纤维进行涂层，然后，将得到的复合纤维用于制造电活性薄片。薄片的电阻率为 14 ± 1 Ω sq，比文献报道的值低 1000 倍左右。通过组装具有优化几何形状的电容式触摸传感器装置，证明了薄片的卓越电子性能。触摸传感器在压缩后电容量增加了 3-4%，响应时间快至 52 ms。据我们所知，这是首次以这种方式制备器件，因此，这里呈现的结果可以为低成本、绿色和高科技电子设备的开发带来显著的改进。
