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Portable wearable electronic devices are becoming more and more research hotspots in the fields of human health monitoring, soft robots, and electronic skin
.
For flexible electronic devices, any small damage (for example, cracks and scratches) will reduce its electrical conductivity and even affect the normal function of the wearable sensor
.
In addition, wearable devices are inevitably affected by light during actual use, and polymer-based flexible films may be degraded under UV light induction
.
The development of flexible electronic equipment with overall self-healing properties and resistance to ultraviolet radiation can help solve the above problems and extend the service life of the device
.
Wearable devices in working condition often generate a lot of heat due to the electric heating effect, which burns the wearer's skin
.
In order to solve the many challenges faced in the preparation and use of wearable devices, the Chen Kunlin research team of Jiangnan University designed and synthesized octadecane-loaded titanium dioxide nanocapsules (OTNs)-graphene/multi-branched polyurethane (PU) hybrid flexibility Multifunctional self-healing film
.
The research results are titled Self-Healing Titanium Dioxide Nanocapsules-Graphene/Multi-Branched Polyurethane Hybrid Flexible Film with Multifunctional Properties toward Wearable Electronics and published in Advanced Functional Materials
.
Figure 1.
Fabrication of a multifunctional wearable sensor with self-healing capabilities.
In this paper, TiO2 nanocapsules encapsulated with octadecane (OTN) are synthesized, and they are grafted onto the surface of modified graphene through coupling.
It can be compounded with branched polyurethane containing dynamic disulfide bonds to obtain a multifunctional coating
.
Finally, the coating was hot pressed onto cotton fabric at 65°C and 2 MPa to develop a wearable sensor
.
The well-dispersed graphene can ensure high sensing sensitivity under different bending angles, bending frequencies and working voltages
.
The self-healing effect built between the inorganic filler and PU allows the film to easily deal with scratches and damage during use
.
Based on the synergy of TiO2 and graphene, the material's UV protection performance is improved, and it can be adapted to long-term outdoor use
.
In addition, as a phase change energy storage material, OTN provides thermal insulation for the film, which can absorb the heat generated by the wearable device during use, and protect the wearer's skin from being burned
.
? Figure 2.
SEM photos, optical microscope photos, etc.
of the multifunctional self-healing film
.
? Figure 3.
UV protection mechanism of the coating
.
For flexible electronic devices, any small damage (for example, cracks and scratches) will reduce its electrical conductivity and even affect the normal function of the wearable sensor
.
In addition, wearable devices are inevitably affected by light during actual use, and polymer-based flexible films may be degraded under UV light induction
.
The development of flexible electronic equipment with overall self-healing properties and resistance to ultraviolet radiation can help solve the above problems and extend the service life of the device
.
Wearable devices in working condition often generate a lot of heat due to the electric heating effect, which burns the wearer's skin
.
In order to solve the many challenges faced in the preparation and use of wearable devices, the Chen Kunlin research team of Jiangnan University designed and synthesized octadecane-loaded titanium dioxide nanocapsules (OTNs)-graphene/multi-branched polyurethane (PU) hybrid flexibility Multifunctional self-healing film
.
The research results are titled Self-Healing Titanium Dioxide Nanocapsules-Graphene/Multi-Branched Polyurethane Hybrid Flexible Film with Multifunctional Properties toward Wearable Electronics and published in Advanced Functional Materials
.
Figure 1.
Fabrication of a multifunctional wearable sensor with self-healing capabilities.
In this paper, TiO2 nanocapsules encapsulated with octadecane (OTN) are synthesized, and they are grafted onto the surface of modified graphene through coupling.
It can be compounded with branched polyurethane containing dynamic disulfide bonds to obtain a multifunctional coating
.
Finally, the coating was hot pressed onto cotton fabric at 65°C and 2 MPa to develop a wearable sensor
.
The well-dispersed graphene can ensure high sensing sensitivity under different bending angles, bending frequencies and working voltages
.
The self-healing effect built between the inorganic filler and PU allows the film to easily deal with scratches and damage during use
.
Based on the synergy of TiO2 and graphene, the material's UV protection performance is improved, and it can be adapted to long-term outdoor use
.
In addition, as a phase change energy storage material, OTN provides thermal insulation for the film, which can absorb the heat generated by the wearable device during use, and protect the wearer's skin from being burned
.
? Figure 2.
SEM photos, optical microscope photos, etc.
of the multifunctional self-healing film
.
? Figure 3.
UV protection mechanism of the coating
