Highly strong and flexible composite hydrogel reinforced by aligned wood cellulose skeleton via alkali treatment for muscle-like sensors

Chen, Chuchu; Wang, Yiren; Wu, Qijing; Wan, Zhangmin; Jin, Yongcan

doi:10.1016/j.cej.2020.125876

Cited by 131 publications

(58 citation statements)

References 47 publications

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“…In biomedical applications, thin film technology is used in the production of flexible displays and flexible digital x-ray detectors in order to minimize the production cost of wearable biomedical devices and enhance their Chen et al (2020) fabricated hydrogel reinforced cellulose skeleton using alkali treatment in order to obtain muscle-like sensors [225]. Sawayama et al (2020) developed a hydrogel glucose sensor to continuously monitor glucose levels [226]. Moreover, injectable polymer hydrogels are used for bio tissue synthesis for wearable IoT sensors [227].…”

Section: Biomedical Applicationsmentioning

confidence: 99%

A review on thin films, conducting polymers as sensor devices

Prabakaran

Vadivu

Mouliprasanth

2022

Mater. Res. Express

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Thin film sensors are used to monitor environmental conditions by measuring the physical parameters. By using thin film technology, the sensors are capable of conducting precise measurements. Moreover, the measurements are stable and dependable. Furthermore, inexpensive sensor devices can be produced. In this paper, thin film technology for the design and fabrication of sensors that are used in various applications is reviewed. Further, the applications of thin film sensors in the fields of biomedical, energy harvesting, optical, and corrosion applications are also presented. From the review, the future research needs and future perspectives are identified and discussed.

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Section: Biomedical Applicationsmentioning

confidence: 99%

A review on thin films, conducting polymers as sensor devices

Prabakaran

Vadivu

Mouliprasanth

2022

Mater. Res. Express

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“…A simple yet effective methodology to prepare wood hydrogels is to infiltrate flexible polymer hydrogels (e.g., polyacrylamide, PAM) into white wood. 94 The prepared hydrogels showed anisotropic properties and performed several mechanical deformations, including flexibility, compressibility, stretchability, and rollability. Kong et al prepared an ionic conductive hydrogel by release at a constant strain of 40%.…”

Section: Wood Hydrogels and Aerogelsmentioning

confidence: 99%

“…In another study, Chen et al prepared a flexible muscle-like sensor by infiltrating polymer into delignified wood. 94 The ionic conductive sensor can accurately detect human motion (e.g., finger and elbow movement).…”

Section: Sensors and Nanogeneratorsmentioning

confidence: 99%

“…It has a fast response time of 150 ms, high sensitivity of 1.85 k Pa −1 over a wide linear range of 0–60 k Pa −1 , and very long stability of 1000 cycles. In another study, Chen et al prepared a flexible muscle‐like sensor by infiltrating polymer into delignified wood 94 . The ionic conductive sensor can accurately detect human motion (e.g., finger and elbow movement).…”

Section: Sensors and Nanogeneratorsmentioning

confidence: 99%

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Transforming wood as next‐generation structural and functional materials for a sustainable future

Farid

Rafiq

Ali

et al. 2021

EcoMat

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Wood as an ecofriendly and renewable natural material has been extensively modified through various delignification protocols to preserve its natural structure and fiber direction. The increased porosity and permeability of wood scaffold thus provide excellent opportunities for material infiltration and densification. Wood features in hierarchical structure and biocompatibility are combined with cutting‐edge processings to overcome the weaknesses for vast applications. These new modifications have explored the great potentials of wood as a next‐generation structural and functional material. This review updates the state‐of‐the‐art physicochemical modifications and strategies to prepare versatile wood hydrogels, aerogels, membranes, and fibers with different physicochemical features. Discussion is elaborated to explore the immense breadth of wood as next‐generation material for applications in biomedical, energy storage, sensors, separation, and buildings. Finally, the main challenges of wood scaffold engineering are represented along with potential solutions and directions for developing wood‐based high‐performance structural and functional materials.

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“…However, because of the low polymer density and high water content, hydrogels fail to meet mechanical property requirements in many important fields such as artificial tissue, actuator, and soft robotics. In order to toughen the typically soft and weak hydrogels, researchers developed various methods such as introducing anisotropic structures ( Zhang et al., 2014 ), compositing ( Chen et al., 2020 ), double network ( Sun et al., 2012 ), mechanical training ( Lin et al., 2019 ), thermal annealing ( Owusu-Nkwantabisah et al., 2018 ), and ice templating ( Zhang et al., 2005 ). However, the mechanical properties of materials fabricated via the methods mentioned above are far from satisfactory.…”

Section: Introductionmentioning

confidence: 99%

Tendon-inspired anti-freezing tough gels

Duan

Hua

et al. 2021

iScience

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Summary Hydrogels have gained tremendous attention due to their versatility in soft electronics, actuators, biomedical sensors, etc. Due to the high water content, hydrogels are usually soft, weak, and freeze below 0°C, which brings severe limitations to applications such as soft robotics and flexible electronics in harsh environments. Most existing anti-freezing gels suffer from poor mechanical properties and urgently need further improvements. Here, we took inspirations from tendon and coniferous trees and provided an effective method to strengthen polyvinyl alcohol (PVA) hydrogel while making it freeze resistant. The salting-out effect was utilized to create a hierarchically structured polymer network, which induced superior mechanical properties (Young's modulus: 10.1 MPa, tensile strength: 13.5 MPa, and toughness: 127.9 MJ/m 3 ). Meanwhile, the cononsolvency effect was employed to preserve the structure and suppress the freezing point to −60°C. Moreover, we have demonstrated the broad applicability of our material by fabricating PVA hydrogel-based hydraulic actuators and ionic conductors.

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Highly strong and flexible composite hydrogel reinforced by aligned wood cellulose skeleton via alkali treatment for muscle-like sensors

Cited by 131 publications

References 47 publications

A review on thin films, conducting polymers as sensor devices

A review on thin films, conducting polymers as sensor devices

Transforming wood as next‐generation structural and functional materials for a sustainable future

Tendon-inspired anti-freezing tough gels

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