Superhydrophobic elastomer with leaf-spring microstructure made from natural wood without any modification chemicals

Gao, Runan; Huang, Yuxiang; Gan, Wentao; Xiao, Shaoliang; Gao, Yang; Ben, Fang; Zhang, Xueming; Liu, Bin; Huang, Rongfeng; Li, Jian; Wei, Xiaoding; Deng, Yulin; Lu, Yun

doi:10.1016/j.cej.2022.136338

Cited by 44 publications

(14 citation statements)

References 46 publications

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“…For example, Gao et al fabricated a superhydrophobic wood-based elastomer via the chemicothermal method. 91 Superhydrophobicity with the WCA of 152° was achieved by tuning the multi-structure of wood using polysaccharide degradation, which tailored the cellulose nanoarrays and removed the hydrophilic groups from the lignin. It was also found that the aromatic skeleton of the residual lignin exhibited excellent photo-to-thermal conversion ability (temperature increased to 83 °C).…”

Section: Emerging Applicationsmentioning

confidence: 99%

Recent development and emerging applications of robust biomimetic superhydrophobic wood

Gao

Wang

et al. 2023

J. Mater. Chem. A

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Section: Emerging Applicationsmentioning

confidence: 99%

Recent development and emerging applications of robust biomimetic superhydrophobic wood

Gao

Wang

et al. 2023

J. Mater. Chem. A

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“…As shown in Figure 1 a,b, the wood cell wall changes from a tightly arranged honeycomb structure to a leaf spring shape after the removal of lignin. This structure governs the material’s elasticity [ 34 ]. The formation of this structure is closely linked to the removal of lignin and hemicellulose.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Properties Study of Wood-Based Cushioning Materials

Pei

Gou

et al. 2023

Polymers

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Traditional cushioning package materials, such as Expended Polystyrene (EPS) and Expanded Polyethylene (EPE), were made with petroleum-based plastics, which are harmful to the environment. It is crucial to develop renewable bio-based cushioning materials that can replace the aforementioned foams due to the rising energy demands of human society and the depletion of fossil fuels. Herein, we report an effective strategy for creating anisotropic elastic wood with special spring-like lamellar structures. Selective removal of lignin and hemicellulose by simple chemical treatment and thermal treatment of the samples after freeze-drying results in an elastic material with good mechanical properties. The resulting elastic wood has a reversible compression rate of 60% and a high elastic recovery (99% height retention after 100 cycles at 60% strain). Drop tests revealed that the elastic wood has excellent cushioning properties. In addition, the chemical and thermal treatments also enlarge the pores in the material, which is favorable for subsequent functionalization. By loading the elastic wood with a muti-walled carbon nanotube (MWCNT), electromagnetic shielding properties are achieved, while the mechanical properties of elastic wood remain unchanged. Electromagnetic shielding materials can effectively suppress various electromagnetic waves propagating through space and the resulting electromagnetic interference and electromagnetic radiation, improve the electromagnetic compatibility of electronic systems and electronic equipment, and ensure the safety of information.

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“…Furthermore, the dehydration of hydroxyl and carbonyl groups on the surface of TBM enhances its hydrophobic characteristics. [ 46 ] The oxygen‐to‐carbon (O/C) ratio of bamboo slightly increases from 0.41 to 0.76 after delignification treatment, leading to an increase in the proportion of C–O and CO groups and a decrease in the proportion of C–C groups. TBM has an oxygen‐to‐carbon ratio that is reduced by 60% compared to DBM.…”

Section: Resultsmentioning

confidence: 99%

Transparent Bamboo with Multiple Light Transmittance Levels, Fiber Textures, and Colors Based on the Gradient Structure of Bamboo

Zhang,

Li,

Zhang

et al. 2023

Adv Eng Mater

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Transparent bamboo (TB) is a new type of biomass and light transmitting material with potential to serve as substitute for transparent wood. However, the potential of the bamboo structure in preparing transparent composites is underexplored. Inspired by the functional gradient structure of bamboo, a simple and efficient two‐step strategy to prepare TB with different transmittance levels, fiber textures, and colors is used. The performance of single‐ and multilayer TB with various fiber volume contents prepared using different lamination methods is evaluated. It is found that the optical and mechanical properties of TB differ with the fiber volume content and the lamination method used. TB composed of veneers with low fiber volume shows the highest light transmittance (44.6%), whereas TB composed of veneers with high fiber volume has the highest tensile strength (45.7 MPa). In terms of water resistance, cross lamination inhibits expansion in width (water absorption rate, 16.37–21.26%) and thickness (thickness swelling rate, 10.22–21.74%). The lamination structure and fiber volume content in the preparation of TB should be selected according to the specific application scenarios. The graded utilization of bamboo veneer with a fiber gradient can effectively realize the rational allocation of bamboo resources and promote sustainable development.

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Superhydrophobic elastomer with leaf-spring microstructure made from natural wood without any modification chemicals

Cited by 44 publications

References 46 publications

Recent development and emerging applications of robust biomimetic superhydrophobic wood

Recent development and emerging applications of robust biomimetic superhydrophobic wood

Preparation and Properties Study of Wood-Based Cushioning Materials

Transparent Bamboo with Multiple Light Transmittance Levels, Fiber Textures, and Colors Based on the Gradient Structure of Bamboo

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