Journal
RSC ADVANCES
Volume 8, Issue 65, Pages 36999-37007Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8ra06193a
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Funding
- State Natural Sciences Fund, China [21506236, 51372276]
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Conductive hydrogels have attracted increasing attention because of their important application in flexible pressure sensors. However, designing hydrogels with a combination of excellent mechanical properties, high-sensitivity, and good biocompatibility is still a profound challenge. Here we report a conductive and biocompatible PVA-Gelatin-nHAP hydrogel (PGHAP gel) by connecting a double network with inorganic nano-particles via ionic bonds. The as-prepared gel achieves excellent elasticity and good fatigue resistance even after 50 cycles of compression. Then a hydrogel pressure sensor was obtained using the as-prepared gel, exhibiting high pressure sensitivity almost linearly responding up to 1.5 kPa and adequate stability of the capacitance-pressure over 4 cycles. These results demonstrate the great potential applications of the hydrogel in biomedical devices, including artificial intelligence, human motion detection, and wearable devices.
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