Metal-polymer composite films based on polyacrylonitrile and silver nanoparticles. Preparation and properties

To avoid conductive failure due to the cracks of the metal thin film under external loads for the wearable strain sensor, a stretchable metal/polymer composite film embedded with silver nanowires (AgNWs) was examined as a potential candidate. The combination of Ag film and AgNWs enabled the fabrication of a conductive film that was applied as a high sensitivity strain sensor, with gauge factors of 7.1 under the applied strain of 0–10% and 21.1 under the applied strain of 10–30%. Furthermore, the strain sensor was demonstrated to be highly reversible and remained stable after 1000 bending cycles. These results indicated that the AgNWs could act as elastic conductive bridges across cracks in the metal film to maintain high conductivity under tensile and bending loads. As such, the strain sensor engineered herein was successfully applied in the real-time detection and monitoring of large motions of joints and subtle motions of the mouth.

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Influence of ion beam and silver nanoparticles on dielectric properties of flexible PVA/PANI polymer composite films

Plastics Rubber and Composites ◽

10.1080/14658011.2021.1928998 ◽

2021 ◽

pp. 1-12

Author(s):

M. M. Abdelhamied ◽

A. M. Abdelreheem ◽

A. Atta

Keyword(s):

Silver Nanoparticles ◽

Dielectric Properties ◽

Polymer Composite ◽

Ion Beam ◽

Composite Films

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Patterned Metal/Polymer Composite Film with Good Mechanical Stability and Repeatability for Flexible Electronic Devices Using Nanoimprint Technology

Micromachines ◽

10.3390/mi10100651 ◽

2019 ◽

Vol 10 (10) ◽

pp. 651

Author(s):

Xu Zheng ◽

Qing Wang ◽

Jinjin Luan ◽

Yao Li ◽

Ning Wang

Keyword(s):

Mechanical Properties ◽

Composite Film ◽

Polymer Composite ◽

Interfacial Adhesion ◽

Metal Film ◽

Mechanical Stability ◽

Electronic Devices ◽

Composite Films ◽

Polymer Composite Film ◽

Metal Polymer

Mechanical stability and repeatability are significant factors for the application of metal film flexible electronic devices. In this work, patterned metal/polymer composite films with good mechanical stability and repeatability were fabricated through nanoimprint technology. The mechanical properties characteristic of metal/polymer composite films were exhibited by resistance change (ΔR/R0) after cyclic tension and bending loading. It was found that the ΔR/R0 and error line of patterned metal/polymer composite film was far lower than the other control groups for repeated experiments, which indicates that patterned metal film has excellent mechanical properties and repeatability. The double cantilever beam method was employed to measure the interfacial adhesion properties of composite films. The average interfacial adhesion of patterned metal/polymer composite films is shown to be over 2.9 and 2.2 times higher than that of metal film deposited on bare polymer and metal nanowire-treated polymer substrates, respectively.

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