近年来,导电纤维的种类不断丰富,它在电子纺织品领域取得了快速发展,智能可穿戴,和医疗保健。然而,大量使用合成纤维对环境的破坏不容忽视,竹子领域对导电纤维的研究很少,绿色和可持续的材料。在这项工作中,我们用碱性亚硫酸钠法去除竹子中的木质素,采用直流磁控溅射法在单根竹纤维束上涂覆铜膜,制备导电竹纤维束,并分析了其在不同工艺参数下的结构和物理性能,找到结合成本和性能的最合适的准备条件。扫描电子显微镜的结果表明,可以通过增加溅射功率和延长溅射时间来提高铜膜的覆盖率。导电竹纤维束的电阻率随溅射功率和溅射时间的增加而降低,最大为0.22Ω·mm;同时,导电竹纤维束的拉伸强度持续下降至375.6MPa。根据X射线衍射结果,导电竹纤维束表面的铜膜中的Cu显示(111)晶面的择优取向,表明所制备的Cu薄膜具有较高的结晶度和良好的薄膜质量。X射线光电子能谱结果表明,铜膜中Cu以Cu0和Cu2+的形式存在,大多数是Cu0。总的来说,竹纤维束的发展为导电纤维向自然再生方向发展提供了研究依据。
The variety of conductive fibers has been constantly enriched in recent years, and it has made rapid development in the fields of electronic textiles, intelligent wearable, and medical care. However, the environmental damage caused by the use of large quantities of synthetic fibers cannot be ignored, and there is little research on conductive fibers in the field of bamboo, a green and sustainable material. In this work, we used the alkaline sodium sulfite method to remove lignin from bamboo, prepared a conductive bamboo fiber bundle by coating a copper film on single bamboo fiber bundles using DC magnetron sputtering, and analyzed its structure and physical properties under different process parameters, finding the most suitable preparation condition that combines cost and performance. The results of the scanning electron microscope show that the coverage of copper film can be improved by increasing the sputtering power and prolonging the sputtering time. The resistivity of the conductive bamboo fiber bundle decreased with the increase of the sputtering power and sputtering time, up to 0.22 Ω·mm; at the same time, the tensile strength of the conductive bamboo fiber bundle continuously decreased to 375.6 MPa. According to the X-ray diffraction results, Cu in the copper film on the surface of the conductive bamboo fiber bundle shows the preferred orientation of (111) the crystal plane, indicating that the prepared Cu film has high crystallinity and good film quality. X-ray photoelectron spectroscopy results show that Cu in the copper film exists in the form of Cu0 and Cu2+, and most are Cu0. Overall, the development of the conductive bamboo fiber bundle provides a research basis for the development of conductive fibers in a natural renewable direction.