丝素蛋白/聚丙烯酰胺复合导电凝胶电子皮肤的制备及其传感性能研究
首发时间:2020-01-23
摘要:为了感知应力以及人体温度的变化,通过简单的自由基聚合法制备丝素蛋白/聚丙烯酰胺复合导电凝胶并作为感知应力和温差的电子皮肤传感器。通过红外光谱仪、TGA、万能拉伸机以及数字万用表研究电子皮肤传感器的组成结构、热稳定性、拉伸稳定性和各种传感性能,发现电子皮肤传感器的可拉伸性达到100%,对应的电阻变化率高达200%,同时其具有可重复拉伸1000次的循环稳定性,而且电子皮肤传感器对温差有较灵敏的感应,通过添加温感变色物质还可将其对温差的感应进行可视化,发现其在30 ℃左右有明显的颜色变化。这种可生物降解的多功能性电子皮肤传感器在监测人体活动和人体温度领域都具有非常大的应用潜力。
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Preparation of SF/PAM composite conductive gel and study its sensing properties
Abstract:To sense human activities and body temperature, a silk fibroin/polyacrylamide composite conductive gel was prepared by free radical polymerization and used as an electronic skin sensor to sense stress and temperature difference. Infrared spectrometer, TGA, universal stretcher and digital multimeter were used to study the composition structure, thermal stability, tensile stability and various sensing properties of the electronic skin sensor, respectively. The stretchability of the electronic skin sensor reached 100%, and the corresponding resistance change rate was 200%, Simultaneously, it had cyclic stability that could be repeatedly stretched 1000 times. The electronic skin sensor was sensitive to the temperature. This sensing could be visualized by adding some color-changing substances, it had obvious color change at about 30 ℃. This biodegradable and versatile electronic skin sensor had great application potential in monitoring human activity and body temperature.
Keywords: Silk fibroin Electronic skin Stress sensing Temperature sensing
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丝素蛋白/聚丙烯酰胺复合导电凝胶电子皮肤的制备及其传感性能研究
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