Abstract
Abstract Ionic polymer-based conductive composite is a new type of ionic electroactive polymer smart material, which is composed of two electrodes, the ion-exchange polymer matrix film and the polymer surface and is a three-layer sandwich structure. The conductive composite material has the advantages of flexibility, portability, and biocompatibility, which has attracted a large number of researchers to study it in the fields of biomimetic flexible actuators and biomedical materials, but the conventional matrix film has the disadvantage of high preparation cost. In this study, using sulfonated waterborne polyurethane membrane as matrix membrane and aniline as monomer, polyaniline (PANI) was synthesized by in situ oxidation polymerization reaction, and the conductive composites with PANI as electrode were prepared. After applying alternating current electric field, a new brake with PANI as electrode is obtained. A low-frequency signal generator was used to study the electromechanical properties of the prepared materials. The results show that the waterborne polyurethane/PANI composite film produces a continuous and stable driving performance at 0.2 Hz and 20 V, and the maximum output displacement of the terminal is 40 mm. When the driving voltage and frequency are changed, the displacement output also changes, showing a good controllable performance. Its structure and morphology were characterized.
Highlights
Ionic polymer-based conductive composite is a new type of ionic electroactive polymer smart material, which is composed of two electrodes, the ion-exchange polymer matrix film and the polymer surface and is a three-layer sandwich structure
The X-ray diffraction (XRD) spectra of waterborne polyurethane (WPU)/PANI were measured at a low temperature using the XRD instrument manufactured by the Dutch company
The sample was cut into a regular shape, and the tensile strength of the WPU film and WPU/PANI composite film was measured using a tensile machine
Summary
Abstract: Ionic polymer-based conductive composite is a new type of ionic electroactive polymer smart material, which is composed of two electrodes, the ion-exchange polymer matrix film and the polymer surface and is a three-layer sandwich structure. The conductive composite material has the advantages of flexibility, portability, and biocompatibility, which has attracted a large number of researchers to study it in the fields of biomimetic flexible actuators and biomedical materials, but the conventional matrix film has the disadvantage of high preparation cost. Ionic polymer metal composite (IPMC) is a new type of ionic EAP intelligent material, but the conventional IPMC uses Pt metal nanoparticles as the electrode and Nafion film as the matrix, which has some defects such as high electrode rigidity [5]. Since Anglonpols et al [14] prepared a conductive PAN using protic acid doping, among many electrode materials, PANI is considered as an electroactive electrode material with a great potential for the development due to its advantages such as high doping stability, easy preparation, and good environmental stability [14], which can effectively overcome the above shortcomings
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