Study on the Strain Sensor by Using Iron(III) Sulfonate Complex/Thermoplastic Polyurethane Composite

서지정보

· 발행기관 : 한국고분자학회
· 수록지 정보 : 폴리머 / 46권 / 5호 / 646 ~ 653페이지
· 저자명 : Pauline May A. Losaria, 임진형

초록

In this study, the strain sensor application based on thermoplastic polyurethane (TPU) and iron(III) p-toluenesulfonate (FTS) is investigated. In general, FTS has been utilized as an oxidant for the oxidative-coupling reactionof conductive monomers for the synthesis of conducting polymer. In this study, FTS is considered as an active componentfor strain sensor that exhibits changes in electrical resistance due to strain for the first time. The TPU-FTS compositebased strain sensor can detect various types of strain from small strain (<5%) to large strain (10-200%) area and distortionmotion with excellent sensitivity. When the content of FTS was increased, the elasticity of the composite decreased andthe conductivity increased, showing a stable response signal according to the strain in the TPU-FTS composite havingan appropriate FTS content (~43 wt%). This can be explained by the reorganization of repetitive conduction pathwayswithout permanent structural destruction of the composite in the region of the optimum FTS content in the TPU-FTScomposite. The simple fabrication of strain sensors based on non-traditional resistance sensing materials such as iron(III)sulfonate complexes is expected to have applications in various sensor fields.

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