Synthesis of ultra-high strength structured material from steam-modified delignification of wood

Liang, Yunyi; Zheng, Guiyang; Xia, Changlei; Zuo, Shida; Ge, Shengbo; Yang, Rui; Ma, Xinxin; Fei, Baowei; Li, Jianzhang; Cheng, Chin Kui; Kim, Soo Young; Le, Quyet Van

doi:10.1016/j.jclepro.2022.131531

Cited by 23 publications

(6 citation statements)

References 41 publications

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“…The outcomes illustrate a notable rise in the cellulose content of the treated samples, from 36.1% to 78.9%, whereas the relative hemicellulose and lignin contents experienced a decline from 14.3% and 23.3% to 9.0% and 1.9%, respectively (Figure 3). [ 43 ] The effective removal of a large amount of lignin while retaining cellulose was demonstrated. The XPS spectra of the samples were examined both prior to and following NaOH treatment.…”

Section: Resultsmentioning

confidence: 99%

A bio‐based multifunctional composite material: Boron nitride and wood fiber to construct thermally conductive cross network

Zuo

et al. 2023

Polymer Composites

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The high demand for thermally conductive materials in the housing and packaging industry of electronic device highlights the necessity for the development of novel thermal conductivity materials. In this study, waste poplar wood was delignified and combined with boron nitride (hBN) to establish a blend system with a cross thermally conductive network. Using the vacuum‐assisted resin transfer molding process, a biobased composite material was prepared with high thermal conductivity (1.41 W m−1 K−1), mechanical strength (flexural strength of 100.7 MPa and tensile strength of 40.0 MPa), flame retardancy, and water resistance. Compared with raw wood, the incorporation of hBN increased the thermal conductivity of the prepared material by 1324.2%. The high thermal conductivity performance surpassed that of most polymers and elastomers commonly used in electronic component heat dissipation materials, indicating the enormous potential of the prepared composite material in the field of heat dissipation materials.

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Section: Resultsmentioning

confidence: 99%

A bio‐based multifunctional composite material: Boron nitride and wood fiber to construct thermally conductive cross network

Zuo

et al. 2023

Polymer Composites

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“…The FTIR spectra confirm a significant decrease in the peaks for the carbonyl stretching and C–O stretching of hemicelluloses at 1732 and 1236 cm −1 , respectively (Figure 2h). Meanwhile, the peaks at 1595 and 1503 cm −1 (ascribed to the aromatic skeleton [ 30 ] ) disappear, indicating lignin removal after delignification. The hemicellulose and lignin contents in OW and DW are determined using the scaled‐down TAPPI method and NaClO 2 /NaOH treatment, respectively, [ 31 ] and are found to have been almost completely removed by chemical delignification (from 24.7% to 3.1% for hemicelluloses and from 23.3% to 4.3% for lignin).…”

Section: Resultsmentioning

confidence: 99%

Smart Wood Dual‐Action Off/On Versatile Switches Based On Highly Sensitive Electrical And Electromagnetic Mechanosensing Performances

Lan

Meng

et al. 2023

Advanced Sustainable Systems

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Smart electromagnetic (EM) functional materials that can arbitrarily utilize EM energy and reduce EM pollution are attractive for future EM devices in an information society; however, studies on precise EM interference (EMI) shielding and sensing are rare. In this work, dual‐action electrical and EM‐responsive mechanoreceptors are prepared from electrically conductive polypyrrole (PPy) nanoparticle (NP)‐infiltrated anisotropic wood (PW) aerogels. The prepared PW aerogels are composed of curved stacked layers of aligned cellulose nanofibers, and can be reversibly condensed and reconstructed for conductive network control during cyclic compression. These PW aerogels can withstand up to 74% compressive strain in a tangential direction and exhibit pressing‐enhanced electrical conductivity and polarization loss. The piezoresistive gauge factor (GF) and linearity of the PW aerogels can be adjusted by varying the PPy deposition time, leading to varying GF values in the range of 1.87–4.62. During mechanosensing based on EMI shielding effectiveness (SE), rapid off/on switching between the EM wave transmission and shielding is achieved when the SE varies above and below the effective EMI shielding area (>20 dB) through continuous compression. Such dual‐action electrical/EM off/on wood aerogel switches provide opportunities for the development of advanced smart devices from biomass resources.

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“…Unlike the two-stage delignification method proposed by previous researchers, we use HAc/H 2 O 2 one-stage method for the delignification of poplar wood (NW) to obtain Delignified@Wood-Aerogel (DWA). 22 The delignification process improves the porosity and chemical accessibility of DWA, making it easy to modify the hydroxyl group of C 6 on the cellulose skeleton. 23 Oxidizing the delignified wood can increase the number of nanopores and active sites.…”

Section: Resultsmentioning

confidence: 99%

Adsorption of Zn(ii) on amination@wood-aerogel and high-value reuse to ZnO/ZnS as an efficient photocatalyst

Zhang

et al. 2022

J. Mater. Chem. A

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Synthesis of ultra-high strength structured material from steam-modified delignification of wood

Cited by 23 publications

References 41 publications

A bio‐based multifunctional composite material: Boron nitride and wood fiber to construct thermally conductive cross network

A bio‐based multifunctional composite material: Boron nitride and wood fiber to construct thermally conductive cross network

Smart Wood Dual‐Action Off/On Versatile Switches Based On Highly Sensitive Electrical And Electromagnetic Mechanosensing Performances

Adsorption of Zn(ii) on amination@wood-aerogel and high-value reuse to ZnO/ZnS as an efficient photocatalyst

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