Bottom-up reconstruction of smart textiles with hierarchical structures to assemble versatile wearable devices for multiple signals monitoring

Ouyang, Zhaofeng; Li, Shenghong; Liu, Jianting; Yu, Hou‐Yong; Peng, Laihu; Zheng, Shuang; Xu, Dan; Tam, Kam Chiu

doi:10.1016/j.nanoen.2022.107963

Cited by 33 publications

(14 citation statements)

References 58 publications

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“…To well understand the chemical structure of PVA/CP 40 , FTIR spectra of PVA, CNC, PANI, and PVA/CP 40 are exhibited in Figure g. For the PANI, there were two characteristic peaks at 1668 and 1298 cm –1 , which corresponded to aromatic C–H and C–N stretching vibrations, respectively. , Moreover, these two characteristic absorption peaks were also found in sample PVA/CP 40 , indicating successful polymerization of PANI. In addition, due to the presence of CNC, two characteristic peaks at 2842 and 1426 cm –1 were observed in the sample PVA/CP 40 , corresponding to the C–H and C–H 2 stretching vibrations of CNC, respectively. , Due to the presence of a large number of hydroxyl groups, a broad peak at 3340 cm –1 was observed for PVA, which was attributed to the O–H stretching vibration. , However, compared with the pure PVA film, the O–H stretching peak in the sample PVA/CP 40 appeared red-shifted at 3332 cm –1 , which indicated that the introduction of CNC, PANI formed a large number of hydrogen bonds with PVA matrix .…”

Section: Resultsmentioning

confidence: 98%

“…For the PANI, there were two characteristic peaks at 1668 and 1298 cm −1 , which corresponded to aromatic C−H and C−N stretching vibrations, respectively. 41,42 Moreover, these two characteristic absorption peaks were also found in sample PVA/CP 40 , indicating successful polymerization of PANI. In addition, due to the presence of CNC, two characteristic peaks at 2842 and 1426 cm −1 were observed in the sample PVA/CP 40 , corresponding to the C−H and C−H 2 stretching vibrations of CNC, respectively.…”

Section: ■ Introductionmentioning

confidence: 90%

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Highly Sensitive, Self-Healable, and Robust Polyvinyl Alcohol/Nanocellulose Composite Electronic Skin by Single-Step Marangoni Self-Assembly for Multipoint Sensing

Dong,

Yu,

Tian

et al. 2023

ACS Sustainable Chem. Eng.

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The polyvinyl alcohol (PVA)-based electronic skin with skin-like features and functions has shown great promise in wearable electronics, but traditional physical methods do not provide multiple interfacial bonds to result in poor mechanical properties, weak conductivity, low sensitivity, and healing ability for further hindering their practical application. In this work, novel alternating spraying technology driven by the Marangoni effect was used to address this challenge and took advantage of the interfacial bond and compatibility between nanocellulose−polyaniline (CNC−PANI) and PVA/CNC films to prepare selfassembled PVA/nanocellulose polyaniline (PVA/CP) electronic skin. Among them, the optimal PVA/CP electronic skin exhibited excellent mechanical performances (stress up to 78.2 MPa), large conductivity (648 mS/m), and high sensitivity (gauge factor = 22.7) with good self-healing abilities (healing efficiency 73.5%). Furthermore, it was designed and integrated into a multi-point sensing system for non-overlapping Morse code communication and real-time monitoring of human health during fitness exercise. Therefore, such high-performance PVA/CP electronic skin is expected to play a demonstration role in a new generation of sustainable wearable electronics.

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Section: Resultsmentioning

confidence: 98%

Section: ■ Introductionmentioning

confidence: 90%

Highly Sensitive, Self-Healable, and Robust Polyvinyl Alcohol/Nanocellulose Composite Electronic Skin by Single-Step Marangoni Self-Assembly for Multipoint Sensing

Dong,

Yu,

Tian

et al. 2023

ACS Sustainable Chem. Eng.

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“…The linear correlation coefficient is 0.99. Considering the influence of ambient temperature on the material, [ 56 ] after the hydrogel was stabilized at 20, 25, 30, 35, and 40 °C for a period of time, titrate with 0.2 m m Ca 2+ solution. Record the change of resistance before and after titration, and draw the relationship diagram of resistance change rate ( R−R 0 /R 0 ) and temperature (Figure S13, Supporting Information).…”

Section: Resultsmentioning

confidence: 99%

Sustainable, Insoluble, and Photonic Cellulose Nanocrystal Patches for Calcium Ion Sensing in Sweat

Wang

et al. 2023

Small

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Self‐assembly of cellulose nanocrystals (CNCs) is invaluable for the development of sustainable optics and photonics. However, the functional failure of CNC‐derived materials in humid or liquid environments inevitably impairs their development in biomedicine, membrane separation, environmental monitoring, and wearable devices. Here, a facile and robust method to fabricate insoluble hydrogels in a self‐assembled CNC–polyvinyl alcohol (PVA) system is reported. Due to the reconstruction of inter‐ or intra‐molecular hydrogen bond interactions, thermal dehydration makes an optimized CNC/PVA photonic film form a stable hydrogel network in an aqueous solution rather than dissolve. Notably, the resulting hydrogel exhibits superb mechanical performance (stress up to 3.3 Mpa and tough up to 0.73 MJ m−3) and reversible conversion between dry and wet states, enabling it convenient for specific functionalization. Sodium alginate (SA) can be adsorbed into the CNC photonic structure by swelling dry CNC/PVA film in a SA solution. The prepared hydrogel showcases the comprehensive properties of freezing resistance (−20°C), strong adhesion, satisfactory biocompatibility, and highly sensitive and selective Ca2+ sensing. The material could act as a portable wearable patch on the skin for the continuous analysis of calcium trends during different physical exercises, facilitating their development in precision nutrition and health monitoring.

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“…In addition, it retained 92% of its sensitivity during simulated body movements, 89.4% after a 30 day storage period, and also showed good selectivity toward glucose in the presence of other bioanalytes commonly found in sweat such as uric acid (UA), ascorbic acid, and lactate. A recent study by Ouyang et al also showed the possible use of PANI in wearable sensors . In their work, smart textiles were fabricated from silk yarns functionalized by PANI and carbon nanotubes (CNT), which endowed the silk yarns with conductive properties and sensitivity to temperature, motion, and environmental gases.…”

Section: Conducting Polymersmentioning

confidence: 99%

Recent Progress in Biomedical Sensors Based on Conducting Polymer Hydrogels

Gamboa

Paulo-Mirasol

Estrany

et al. 2023

ACS Appl. Bio Mater.

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Biosensors are increasingly taking a more active role in health science. The current needs for the constant monitoring of biomedical signals, as well as the growing spending on public health, make it necessary to search for materials with a combination of properties such as biocompatibility, electroactivity, resorption, and high selectivity to certain bioanalytes. Conducting polymer hydrogels seem to be a very promising materials, since they present many of the necessary properties to be used as biosensors. Furthermore, their properties can be shaped and enhanced by designing conductive polymer hydrogel-based composites with more specific functionalities depending on the end application. This work will review the recent state of the art of different biological hydrogels for biosensor applications, discuss the properties of the different components alone and in combination, and reveal their high potential as candidate materials in the fabrication of all-organic diagnostic, wearable, and implantable sensor devices.

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Bottom-up reconstruction of smart textiles with hierarchical structures to assemble versatile wearable devices for multiple signals monitoring

Cited by 33 publications

References 58 publications

Highly Sensitive, Self-Healable, and Robust Polyvinyl Alcohol/Nanocellulose Composite Electronic Skin by Single-Step Marangoni Self-Assembly for Multipoint Sensing

Highly Sensitive, Self-Healable, and Robust Polyvinyl Alcohol/Nanocellulose Composite Electronic Skin by Single-Step Marangoni Self-Assembly for Multipoint Sensing

Sustainable, Insoluble, and Photonic Cellulose Nanocrystal Patches for Calcium Ion Sensing in Sweat

Recent Progress in Biomedical Sensors Based on Conducting Polymer Hydrogels

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