Hydrochromic wood biocomposites for humidity and moisture detection

Chen, Yujie; Liu, Chaozheng; Liang, Zhaolun; Ye, Lei; Liu, Lin; Liu, Zhipeng; Feng, Xinhao; Donaldson, Lloyd; Singh, Tripti; Zhan, Xianxu; Han, Jingquan; Fu, Qiliang; Mei, Changtong

doi:10.1016/j.cej.2023.142890

Chemical Engineering Journal

2023

DOI: 10.1016/j.cej.2023.142890

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Hydrochromic wood biocomposites for humidity and moisture detection

Yujie Chen

Chaozheng Liu

Zhaolun Liang

et al.

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Cited by 13 publications

(3 citation statements)

References 62 publications

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“…Natural wood (NW) possesses unique hierarchical architectures and anisotropic frameworks, which results in anisotropic mechanical performances and functionalities, − making it an ideal reinforcing skeleton for developing shape-memory structural materials . Currently, various shape-memory materials based on micronanoscale wood frameworks have been designed and constructed, including thermoset, elastomer, and polycaprolactone-based composites .…”

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confidence: 99%

Programmable and Shape–Color Synchronous Dual-Response Wood with Thermal Stimulus

Tan,

Wang,

Dong

et al. 2024

ACS Nano

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Stimuli-responsive materials exhibit huge potential in sensors, actuators, and electronics; however, their further development for reinforcement, visualization, and biomassincorporation remains challenging. Herein, based on the impregnation of thermochromic microcapsule (TCM)-doped dynamic covalent vitrimers, a programmable shape-color dualresponsive wood (SRW-TC) was demonstrated with robust anisotropic structures and exchangeable covalent adaptable networks. Under mild conditions, the resultant SRW-TC displays feasible shape memorability and programmability, resulting from the rigidity−flexibility shift induced by the glass-transition temperature (34.99 °C) and transesterification reaction triggered by the topology freezing transition temperature (149.62 °C). Furthermore, the obtained SRW-TC possesses satisfactory mechanical performance (tensile strength of 45.70 MPa), thermal insulation (thermal conductivity of 0.27 W/m K), anisotropic light management, and benign optical properties (transmittance of 51.73% and haze of 99.67% at 800 nm). Importantly, the incorporation of compatible TCM enables SRW-TC to visualize shape memory feasibility and rigidity/flexibility switching and respond to the external thermal stimulus through the thermalinduced shape−color synchronous dual-responsiveness, which successfully demonstrates the applications of sensing temperature, grasping objects, encrypting/decoding icon messages, and so on. The proposed facile and highly effective strategy could serve as a guideline for developing high-performance multifunctional wood composite with promising intelligent applications in performance visualization, environmental sensing, materials interactivity, information dualencryption, local precision shape and color regulation, etc.

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confidence: 99%

Programmable and Shape–Color Synchronous Dual-Response Wood with Thermal Stimulus

Tan,

Wang,

Dong

et al. 2024

ACS Nano

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“…In biological and biomedical investigations, an applied humidity indicator may also need to be biocompatible and biodegradable, which makes the development of biomolecule-based humidity-indicating materials very attractive. [1][2][3][4] Of biomolecules, DNA is one of the most important biological materials in the fields of biomedicine, nanotechnology and materials science. 5,6 In aqueous conditions, various stimuliresponsive DNA materials have been developed by modifying DNA with stimuli-responsive molecules/motifs.…”

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confidence: 99%

mentioning

confidence: 99%

DNA liquid crystals with AIE effect toward humidity-indicating biomaterials

Zhang,

Zhao,

Liang

et al. 2024

Soft Matter

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Bionic Diffractive Meta‐Silk Patch for Visually Flexible Wearables

Dong,

Wei,

Zhou

et al. 2024

Laser & Photonics Reviews

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Rapid humidity response contributes tremendously to visually flexible wearables. However, sluggish response, infrequent reproducibility, and biotoxicity restrict the development of wearable humidity response devices. Here, inspired by the changes in the color of Dynastes hercules, a flexible wearable, rapid response, stretchable, rewritable meta‐silk fibroin diffractive film (mSFD) is presented. The film is generated by spin‐coating silk protein and polyurethane (PU) cross‐linking, followed by hot pressing of meta‐structures. Owing to the diffraction and stable combination of the SF β‐structure and PU hydrogen bond, mSFDs exhibit excellent coloration, rapid response, and erasability. Notably, the microcolumns and microporous structures on the meta‐membrane endow the membrane with unparalleled rapid response features. Fast color disappearance and reappearance are observed under high humidity conditions (response time <2 ms, cycle in 1 s). In particular, the rapid humidity responsiveness of mSFP induces a change in the color of the membrane, which enables its application in real‐time biomonitoring (wound management, mask regulation) and anticounterfeiting (medicine storage, fingerprint recognition). These properties endow bioinspired mSFD P with high potential in the field of robotic skin.

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Hydrochromic wood biocomposites for humidity and moisture detection

Cited by 13 publications

References 62 publications

Programmable and Shape–Color Synchronous Dual-Response Wood with Thermal Stimulus

Programmable and Shape–Color Synchronous Dual-Response Wood with Thermal Stimulus

DNA liquid crystals with AIE effect toward humidity-indicating biomaterials

Bionic Diffractive Meta‐Silk Patch for Visually Flexible Wearables

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