A 3D printable, highly stretchable, self-healing hydrogel-based sensor based on polyvinyl alcohol/sodium tetraborate/sodium alginate for human motion monitoring

Zhang, Juan; Wang, Yanen; Wei, Qinghua; Wang, Yanmei; Li, Mingyang; Li, Dinghao; Zhang, Longyu

doi:10.1016/j.ijbiomac.2022.08.175

Cited by 28 publications

(13 citation statements)

References 59 publications

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“… 48 The self-healing efficiency of P(U-AM-ChCl) hydrogels increases with increasing SA content due to the large number of hydroxyl and carboxyl groups on SA, which allows more dynamic hydrogen bonds to be formed within the hydrogel and facilitates the self-healing rate. 19 The self-healing rate in SA/P(U-AM-ChCl) hydrogels is related to the hydrogen bonding between SA molecules and between SA and AM and U. 49 In summary, SA/P(U-AM-ChCl) hydrogels have good self-healing properties.…”

Section: Resultsmentioning

confidence: 99%

“… 15 It has been increasingly shown that the incorporation of SA into hydrogels can improve the water absorption and self-healing properties of hydrogels, 16,17 partly because of the large number of hydrophilic groups such as hydroxyl (–OH) and carboxyl (–COOH) on the SA structure, 18 and partly because SA contains a large number of –OH, which constitutes a dynamic non-covalent bond within the hydrogel. 19 …”

Section: Introductionmentioning

confidence: 99%

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Preparation of SA/P(U-AM-ChCl) composite hydrogels by frontal polymerization and its performance study

Hao

et al. 2023

RSC Adv.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation of SA/P(U-AM-ChCl) composite hydrogels by frontal polymerization and its performance study

Hao

et al. 2023

RSC Adv.

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“…Increasing the SA/AP weight ratio resulted in an increase in the number of chemical bonds that can be cross-linked with borax in the hydrogel structure, which improved its mechanical properties. 32 Since the APS 3 G hydrogel demonstrated the best mechanical properties, it was used in subsequent experiments.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

“…Finally, the elongation of the APS 3 G hydrogel with an AP/SA ratio of 9:2 reached 1477.3%, and its tensile strength was 119.9 kPa (Figure c,d). Increasing the SA/AP weight ratio resulted in an increase in the number of chemical bonds that can be cross-linked with borax in the hydrogel structure, which improved its mechanical properties . Since the APS 3 G hydrogel demonstrated the best mechanical properties, it was used in subsequent experiments.…”

Section: Resultsmentioning

confidence: 99%

Self-Healing, Freeze-Resistant, and Sustainable Aloe Polysaccharide-Based Hydrogels for Multifunctional Sensing

Xiao,

Lao,

Liu

et al. 2024

ACS Sustainable Chem. Eng.

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Although designing wearable sensors by using sustainable hydrogels has been gaining widespread attention, the fabrication of inexpensive biobased hydrogel sensors with fast selfhealing and antibacterial abilities remains challenging. In this study, biobased green hydrogels were prepared from aloe vera polysaccharides (AP), poly(vinyl alcohol), and sodium alginate (SA). Their mechanical, electrical, biodegradable, and self-healing characteristics were investigated. The hydrogel with an AP/SA ratio of 9:2 demonstrated excellent tensile properties with an elongation at break, tensile toughness, and electrical conductivity of 1477.3%, 1.19 MJ/m 3 , and 12.67 × 10 −2 S/m, respectively. The hydrogel remained electrically conductive at −20 °C. During strain sensing, it exhibited excellent stability and sensitivity (gauge factor: 9.2), a wide strain range (up to 1400%), and a high self-healing efficiency of 96.1% over 4 min. It was also able to detect low strains (1%). These properties enabled the hydrogel assembly into wearable sensors to monitor physiological signals generated by large movements of body joints, small facial expression changes, talking, and drinking. An assembled humidity sensor detected relative humidity levels of 45−98% and monitored human body respiration patterns in different exercise states. Consequently, the prepared hydrogel is a potential functional material for sustainable, flexible, wearable electronics.

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“…The doping method can add electrical fillers to the optical elastic matrix, and the prepared, flexible body has a conductive function through physical or chemical processes ( Figure 6 ) ( Serafin et al, 2021 ). Mixed carboxy-based multi-wall carbon nanotubes (C-MWCNTS) to N-acrylceroprid (ACMO) resin can obtain good conductive nano-composite materials for DLP printing and strain sensors, which can be detected in real time and accurate detection human activity ( Zhang et al, 2022c ).…”

Section: Polymer Materials For 3d Bio Printing Of Bone and Cartilagementioning

confidence: 99%

3D printing of bone and cartilage with polymer materials

Fan

Liu²,

Wang³

et al. 2022

Front. Pharmacol.

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Damage and degeneration to bone and articular cartilage are the leading causes of musculoskeletal disability. Commonly used clinical and surgical methods include autologous/allogeneic bone and cartilage transplantation, vascularized bone transplantation, autologous chondrocyte implantation, mosaicplasty, and joint replacement. 3D bio printing technology to construct implants by layer-by-layer printing of biological materials, living cells, and other biologically active substances in vitro, which is expected to replace the repair mentioned above methods. Researchers use cells and biomedical materials as discrete materials. 3D bio printing has largely solved the problem of insufficient organ donors with the ability to prepare different organs and tissue structures. This paper mainly discusses the application of polymer materials, bio printing cell selection, and its application in bone and cartilage repair.

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A 3D printable, highly stretchable, self-healing hydrogel-based sensor based on polyvinyl alcohol/sodium tetraborate/sodium alginate for human motion monitoring

Cited by 28 publications

References 59 publications

Preparation of SA/P(U-AM-ChCl) composite hydrogels by frontal polymerization and its performance study

Preparation of SA/P(U-AM-ChCl) composite hydrogels by frontal polymerization and its performance study

Self-Healing, Freeze-Resistant, and Sustainable Aloe Polysaccharide-Based Hydrogels for Multifunctional Sensing

3D printing of bone and cartilage with polymer materials

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