Enhancement of Strain‐Sensing Performance through Gas Phase Incorporation of Siloxane into Thermoplastic Polyurethane‐Conducting Polymer Composite,Macromolecular Chemistry and Physics

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Enhancement of Strain‐Sensing Performance through Gas Phase Incorporation of Siloxane into Thermoplastic Polyurethane‐Conducting Polymer Composite
Macromolecular Chemistry and Physics ( IF 2.5 ) Pub Date : 2020-07-10 , DOI: 10.1002/macp.202000155
Pauline May Losaria ₁ , Jin‐Heong Yim ₁

Affiliation

In this study, thermoplastic polyurethane (TPU)‐conducting polymer (CP)–SiO₂ hybrid strain sensors are fabricated via the simultaneous co‐vaporization of a CP monomer with tetraethyl orthosilicate (TEOS). Poly(3,4‐ethylenedioxythiophene) (PEDOT) and polypyrrole (PPy) hybrids prepared using the oxidant, iron (III) p‐toluenesulfonate hexahydrate (FTS) with TPU as the substrate are explored along with the effect of hybridization on their sensing performance and mechanical properties. The SiO₂ is mostly formed on the surface and the CP is successfully polymerized within the TPU matrix. The sensor can be stretched further by up to 290% more than the pristine counterpart. Moreover, stretch‐release cycles show an increase in the relative resistance of the sensor by up to 89%, thereby improving its sensitivity. The sensors can detect motion at various strain levels, different speeds, and continuous deformation at different strains. The sensor’s reliability is tested by up to 1000 cycles at 10% strain, as well as other kinds of distortion such as bending and twisting. The created organic‐inorganic hybrid sensor exhibits a synergistic enhancement of both its mechanical properties and electromechanical performance. Furthermore, the processability of the elastomer and the versatility of the incorporated siloxane component have allowed the homogeneous distribution of the active elements (PEDOT, PPy).

中文翻译：

通过将硅氧烷气相掺入热塑性聚氨酯导电聚合物复合材料中来增强应变传感性能

在这项研究中，通过将CP单体与原硅酸四乙酯（TEOS）同时共蒸发，制造了热塑性聚氨酯（TPU）导电聚合物（CP）–SiO ₂混合应变传感器。研究了以氧化剂，六甲苯磺酸铁（III）以TPU为底物制备的聚（3,4-亚乙基二氧噻吩）（PEDOT）和聚吡咯（PPy）杂化物以及杂交对其感测性能的影响和机械性能。SiO ₂大部分形成在表面上，CP在TPU基质内成功聚合。传感器可以比原始传感器进一步拉伸多达290％。此外，拉伸释放循环显示传感器的相对电阻增加了多达89％，从而提高了其灵敏度。传感器可以检测各种应变水平，不同速度的运动，以及不同应变下的连续变形。传感器的可靠性通过10％的应变下的多达1000次循环以及弯曲和扭曲等其他类型的畸变进行了测试。创建的有机-无机混合传感器在机械性能和机电性能方面均表现出协同增效。此外，

更新日期：2020-07-10

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