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首页> 外文期刊>Journal of Materials Science >Coaxial electrospun flexible PANI//PU fibers as highly sensitive pH wearable sensor
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Coaxial electrospun flexible PANI//PU fibers as highly sensitive pH wearable sensor

机译：同轴电纺柔性PANI // PU纤维作为高度敏感的pH可穿戴传感器

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摘要

The combination of conductive material and flexible material is an unavoidable problem in the preparation of flexible sensor, but uniform combination of the materials in micro- or nanostructure is difficult. Coaxial electrospinning is an effective way to realize the combination, which is very strict for the solutions and the synthesis conditions. In this paper, composite pH-sensitive sensors were developed by coaxial electrospinning of polyaniline (PANI) and polyurethane (PU) into core-shell fibers. PU improved the mechanical properties of the sensors. The mechanical properties and conductivity of the sensor can be changed through adjusting the proportion of PANI and PU. By chronopotentiometry in buffer solutions, the sensor worked linearly in the pH range of 2-7 with the sensitivity of - 60 mV/pH and pH change below 0.2 can be detected. It was also proved that the sensor can resist the influence from the changes in temperature, detection time and deformation of the sensor, ensuring the stability in pH detection. Further, by attaching to skin, our sensor showed the response to the pH of small amount of sweat on the skin surface, which suggested the possibility in wearable devices. Graphic abstract
机译：导电材料和柔性材料的组合是在柔性传感器的制备中的不可避免的问题，但是难以均匀地组合材料中的材料或纳米结构中的材料。同轴电纺线是实现组合的有效方法，这对于溶液和合成条件非常严格。本文通过聚苯胺（PANI）和聚氨酯（PU）的同轴静电纺丝将复合pH敏感传感器和聚氨酯（PU）加入核心壳纤维。 PU改善了传感器的机械性能。通过调节PANI和PU的比例，可以改变传感器的机械性能和电导率。通过在缓冲溶液中的时间计量测定法，传感器在2-7的pH范围内线性工作，灵敏度为-60mV / pH，可以检测到0.2以下0.2的pH变化。还证明了传感器可以抵抗传感器的温度，检测时间和变形变形的影响，确保了pH检测的稳定性。此外，通过附着到皮肤，我们的传感器显示对皮肤表面上少量汗水的pH的响应，这提出了可穿戴装置的可能性。图形摘要

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  • 来源
    《Journal of Materials Science》 |2020年第33期|共15页
  • 作者

    Hou Xuesong; Zhou Yan; Liu Yongjia; Wang Liping; Wang Jinye;

  • 作者单位

    Shanghai Jiao Tong Univ Sch Biomed Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Biomed Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Instrumental Anal Ctr Natl Ctr Translat Med Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Biomed Engn Shanghai 200240 Peoples R China;

    Shanghai Jiao Tong Univ Sch Biomed Engn Shanghai 200240 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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