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Issue 65, 2018
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Biocompatible, stretchable and mineral PVA–gelatin–nHAP hydrogel for highly sensitive pressure sensors

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Abstract

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.

Graphical abstract: Biocompatible, stretchable and mineral PVA–gelatin–nHAP hydrogel for highly sensitive pressure sensors

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Publication details

The article was received on 22 Jul 2018, accepted on 09 Oct 2018 and first published on 01 Nov 2018


Article type: Paper
DOI: 10.1039/C8RA06193A
RSC Adv., 2018,8, 36999-37007
  • Open access: Creative Commons BY license
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    Biocompatible, stretchable and mineral PVA–gelatin–nHAP hydrogel for highly sensitive pressure sensors

    Y. Zhu, W. Lu, Y. Guo, Y. Chen, Y. Wu and H. Lu, RSC Adv., 2018, 8, 36999
    DOI: 10.1039/C8RA06193A

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