Multifunctional bacterial cellulose-based organohydrogels with long-term environmental stability

Guo, Wenyan; Yuan, Qi; Huang, Lingzhi; Zhang, Wei; Li, Dandan; Chen, Yao; Ma, Ming‐Guo

doi:10.1016/j.jcis.2021.10.057

Cited by 24 publications

(10 citation statements)

References 51 publications

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“…We compared the "ionic conductivity", "residual strain" and "cyclic tensile strain (less than or equal to 200%)" of our organohydrogel and other reported organohydrogels (Fig. S11) [44][45][46][47][48][49][50]. The small residual strain during cyclic tensile tests indicated that our organohydrogel had excellent resilience.…”

Section: Resultsmentioning

confidence: 88%

Transparent, stretchable and anti-freezing hybrid double-network organohydrogels

Zhu

Song

et al. 2022

Sci. China Mater.

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Stretchable ionic conductors with high transparency and excellent resilience are highly desired for flexible electronics, but traditional ionic conductive hydrogels are easy to dry and freeze. Herein, a newly hybrid crosslinking strategy is presented for preparing a stretchable and transparent hydrogel by using sodium alginate (SA) and acrylamide based on the unique physically and covalently hybrid crosslinking mechanism, which is transformed into organohydrogel by simple solvent replacement. Due to the combination of hybrid crosslinking double network and hydrogen bond interactions introduced by the glycerin-water binary solvent, the SA-poly (acrylamide)-organohydrogel (SPOH) demonstrates excellent anti-freezing (−20°C) property, stability (>2 days), transparency, stretchability (~1600%) and high ionic conductivity (17.1 mS cm −1 ). Thus, a triboelectric nanogenerator made from SPOH (O-TENG) shows an instantaneous peak power density of 262 mW m −2 at a load resistance of 10 MΩ and efficiently harvests biomechanical energy to drive an electronic watch and light-emitting diode. Moreover, The O-TENG exhibits favorable long-term stability (2 weeks) and temperature tolerance (−20°C). In addition, the raw materials can be prepared into SPOH fibers by a simple tubular mold method, exhibiting high transparency, which can be used for laser transmission. The various abilities of the SPOH promise the application of energy harvesting and laser transmission for wearable electronics and biomedical field.

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Section: Resultsmentioning

confidence: 88%

Transparent, stretchable and anti-freezing hybrid double-network organohydrogels

Zhu

Song

et al. 2022

Sci. China Mater.

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“…In wearable health monitoring applications, we often pay attention to wearable sensors' long-term performance stability, i.e., operating continuously for a long time in various complex environments without apparent performance degradation. The evaporation and condensation of water and the corrosion of metal electrodes are essential factors affecting the long-term performance stability of hydrogel-based sensors [ 206 , 207 ].…”

Section: Discussionmentioning

confidence: 99%

Engineering Smart Composite Hydrogels for Wearable Disease Monitoring

Ding

Wang

et al. 2023

Nano-Micro Lett.

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Growing health awareness triggers the public’s concern about health problems. People want a timely and comprehensive picture of their condition without frequent trips to the hospital for costly and cumbersome general check-ups. The wearable technique provides a continuous measurement method for health monitoring by tracking a person’s physiological data and analyzing it locally or remotely. During the health monitoring process, different kinds of sensors convert physiological signals into electrical or optical signals that can be recorded and transmitted, consequently playing a crucial role in wearable techniques. Wearable application scenarios usually require sensors to possess excellent flexibility and stretchability. Thus, designing flexible and stretchable sensors with reliable performance is the key to wearable technology. Smart composite hydrogels, which have tunable electrical properties, mechanical properties, biocompatibility, and multi-stimulus sensitivity, are one of the best sensitive materials for wearable health monitoring. This review summarizes the common synthetic and performance optimization strategies of smart composite hydrogels and focuses on the current application of smart composite hydrogels in the field of wearable health monitoring.

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“…The hydrogel sensors displayed the corresponding current signal for human motion detection, such as human swallowing, heart beating, wrist bending, and elbow bending. More recently, Guo et al (2022) prepared the bacterial cellulose (BC)based organohydrogels with tensile stress > 1.0 MPa and tensile strain of 1300% via microwave heating and acid catalysis method. It observed increased mechanical properties because of the hydrogen bond and the metal bonds with BCs-Ca 2+ coordination.…”

Section: Polymer-based Composite For Motion Detection Applicationsmentioning

confidence: 99%

“…Fig.3. The motion detection of C-Gly5 organohydrogels sensor: (a through f) walking, elbow and knee bending, pressing, finger and wrist bending; (g through i) blinking and speech(Guo et al 2022) …”

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confidence: 99%

Flexible functional composites for athlete health monitoring and auxiliary training applications

Zuo

Diao

et al. 2023

BioRes

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The flexible functional composites have widely potential applications in the fields of athlete health monitoring and auxiliary training. Recently, there are a few reports on various functional composites such as graphene-based composites, MXene-based composites, and polymer-based composites, etc. However, the applications of flexible functional composites for athlete health monitoring and auxiliary training have not widely reviewed yet. This mini-review article summarizes these three types of functional composites for the applications of athlete health monitoring and auxiliary training. The synthetic methods, structures, and properties of functional composites are reviewed via some typical examples. We pay attention to the properties of composites sensor about health-monitoring. Moreover, the directions are suggested based on our knowledge. It demonstrates that these flexible functional composites will display excellent properties and promising applications potential in athlete health monitoring and auxiliary training.

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Multifunctional bacterial cellulose-based organohydrogels with long-term environmental stability

Cited by 24 publications

References 51 publications

Transparent, stretchable and anti-freezing hybrid double-network organohydrogels

Transparent, stretchable and anti-freezing hybrid double-network organohydrogels

Engineering Smart Composite Hydrogels for Wearable Disease Monitoring

Flexible functional composites for athlete health monitoring and auxiliary training applications

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