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Electrostatic Twisting of Core–Shell Nanofibers for Strain Sensing Applications
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-09-18 , DOI: 10.1021/acsapm.0c00580 Mikhail A. Kanygin 1 , Mahnaz Shafiei 2 , Behraad Bahreyni 1
ACS Applied Polymer Materials ( IF 4.4 ) Pub Date : 2020-09-18 , DOI: 10.1021/acsapm.0c00580 Mikhail A. Kanygin 1 , Mahnaz Shafiei 2 , Behraad Bahreyni 1
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Stretchable strain sensors are increasingly needed in emerging fields of wearable electronics and smart textiles for applications ranging from human motion detection to health monitoring. Nanofibers made from conductive materials or composites of polymers and conductive nanoparticles exhibit strong sensitivities but are difficult to be utilized because of their small dimensions. In the present article we report on a technique for producing core–shell nanofibers and their in situ twisting using a rotating electric field. The process produces sensitive threads that can be handled easily and used, for instance, in smart textile applications. The core–shell nanofibers utilized poly(vinylidene fluoride) as the structural polymer, and multiwalled carbon nanotubes were used to make the core electrically conductive. The structure of nanofibers was studied through a set of analytical methods. The fibers exhibit strong piezoresistive responses and can be utilized in various strain sensing applications. The mechanical properties of fabricated submicron fiber yarns are compared with nontwisted fibers, and improvement of their stretchability has been demonstrated. Furthermore, the sensitivity of fiber threads to different directions of stretching depending on the way of their knitting into fabric has been compared.
中文翻译：
核-壳纳米纤维的静电加捻，用于应变传感应用
可拉伸应变传感器在可穿戴电子产品和智能纺织品的新兴领域中日益增长，其应用范围从人体运动检测到健康监测。由导电材料或聚合物与导电纳米颗粒的复合材料制成的纳米纤维具有很强的敏感性，但由于其尺寸小而难以使用。在本文中，我们报道了一种利用旋转电场生产核-壳纳米纤维及其原位加捻的技术。该过程会产生敏感的线程，这些线程可以轻松处理并在例如智能纺织品应用中使用。核-壳纳米纤维利用聚偏二氟乙烯作为结构聚合物，而多壁碳纳米管则用于使核导电。通过一套分析方法研究了纳米纤维的结构。纤维表现出很强的压阻响应，可用于各种应变传感应用。将制造的亚微米纤维纱线的机械性能与非加捻纤维进行了比较，并证明了其可拉伸性的提高。此外，已经比较了纤维线对不同拉伸方向的敏感性，这取决于它们编织到织物中的方式。
更新日期：2020-11-13
中文翻译：
核-壳纳米纤维的静电加捻，用于应变传感应用
可拉伸应变传感器在可穿戴电子产品和智能纺织品的新兴领域中日益增长，其应用范围从人体运动检测到健康监测。由导电材料或聚合物与导电纳米颗粒的复合材料制成的纳米纤维具有很强的敏感性，但由于其尺寸小而难以使用。在本文中，我们报道了一种利用旋转电场生产核-壳纳米纤维及其原位加捻的技术。该过程会产生敏感的线程，这些线程可以轻松处理并在例如智能纺织品应用中使用。核-壳纳米纤维利用聚偏二氟乙烯作为结构聚合物，而多壁碳纳米管则用于使核导电。通过一套分析方法研究了纳米纤维的结构。纤维表现出很强的压阻响应，可用于各种应变传感应用。将制造的亚微米纤维纱线的机械性能与非加捻纤维进行了比较，并证明了其可拉伸性的提高。此外，已经比较了纤维线对不同拉伸方向的敏感性，这取决于它们编织到织物中的方式。
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