Tseghai Granch Berhe, Malengier Benny, Fante Kinde Anlay, Nigusse Abreha Bayrau, Van Langenhove Lieva
Department of Materials, Textiles and Chemical Engineering, Ghent University, 9000 Gent, Belgium.
Ethiopian Institute of Textile and Fashion Technology, Bahir Dar University, 6000 Bahir Dar, Ethiopia.
Sensors (Basel). 2020 Mar 20;20(6):1742. doi: 10.3390/s20061742.
In this work, we have successfully produced a conductive and stretchable knitted cotton fabric by screen printing of poly(3,4-ethylenedioxythiophene) polystyrene sulfonate (PEDOT:PSS) and poly(dimethylsiloxane-b-ethylene oxide)(PDMS-b-PEO) conductive polymer composite. It was observed that the mechanical and electrical properties highly depend on the proportion of the polymers, which opens a new window to produce PEDOT:PSS-based conductive fabric with distinctive properties for different application areas. The bending length analysis proved that the flexural rigidity was lower with higher PDMS-b-PEO to PEDOT:PSS ratio while tensile strength was increased. The SEM test showed that the smoothness of the fabric was better when PDMS-b-PEO is added compared to PEDOT:PSS alone. Fabrics with electrical resistance from 24.8 to 90.8 kΩ/sq have been obtained by varying the PDMS-b-PEO to PEDOT:PSS ratio. Moreover, the resistance increased with extension and washing. However, the change in surface resistance drops linearly at higher PDMS-b-PEO to PEDOT:PSS ratio. The conductive fabrics were used to construct textile-based strain, moisture and biopotential sensors depending upon their respective surface resistance.
在这项工作中，我们通过丝网印刷聚（3,4 - 乙撑二氧噻吩）聚苯乙烯磺酸盐（PEDOT:PSS）和聚（二甲基硅氧烷 - b - 环氧乙烷）（PDMS - b - PEO）导电聚合物复合材料，成功制备出了一种导电且可拉伸的针织棉织物。据观察，其机械性能和电学性能高度依赖于聚合物的比例，这为生产具有不同特性、适用于不同应用领域的基于PEDOT:PSS的导电织物开辟了一扇新窗口。弯曲长度分析表明，PDMS - b - PEO与PEDOT:PSS的比例越高，织物的抗弯刚度越低，而拉伸强度则有所提高。扫描电子显微镜（SEM）测试显示，与单独的PEDOT:PSS相比，添加PDMS - b - PEO后织物的光滑度更好。通过改变PDMS - b - PEO与PEDOT:PSS的比例，获得了电阻在24.8至90.8 kΩ/sq之间的织物。此外，电阻随拉伸和洗涤而增加。然而，在较高的PDMS - b - PEO与PEDOT:PSS比例下，表面电阻的变化呈线性下降。根据导电织物各自的表面电阻，将其用于构建基于纺织品的应变、湿度和生物电位传感器。
