Flexible and biocompatible polystyrene/multi-walled carbon nanotubes films with high permittivity and low loss

Abstract

Percolative composites with high permittivity and low loss have drawn enormous attention in the research community, exhibiting wide range of applications in sensors, capacitors, field-effect transistors, antennas, etc. In this work, flexible and biocompatible polystyrene/multi-walled carbon nanotubes (PS/MWCNTs) films with high permittivity and low loss near percolation threshold were achieved by solution mixing assisted with non-solvent induced phase separation (NIPS) strategy and followed by the hot press method. Cytotoxicity experiments proved that the experimental process and products are green, environmentally friendly and biocompatible. The microstructure and dielectric properties were investigated. When MWCNTs content reached 15 wt%, high permittivity and low loss were simultaneously realized. Combining the flexibility and non-toxicity, the PS/MWCNTs films with high permittivity and low loss exhibit great potentials in wearable devices, skin sensors and flexible electronics.

A double‐dynamic‐bond crosslinked multifunctional conductive hydrogel with self‐adhesive, remoldability, and rapid self‐healing properties for wearable sensing

“…In recent years, the development of flexible wearable electronics has become an important research field, [1][2][3][4] in which flexible wearable sensors can be used to monitor the motion data of the human body. [5][6][7][8] These sensors have the ability to convert strain processes into electrical signal outputs, enabling their extensive applications in fields such as human-machine interactions, [9][10][11] soft robotics, 12,13 and electronic skin, [14][15][16] electrode, [17][18][19][20] anticorrosion coating. [21][22][23] Such devices typically require flexible materials that possess self-adhesive properties, rapid self-healing capabilities, as well as excellent conductivity and flexibility.…”