High capacity oil absorbent wood prepared through eco-friendly deep eutectic solvent delignification

Yang, Rui; Cao, Qinghua; Liang, Yunyi; Hong, Shu; Xia, Changlei; Wu, Yingji; Li, Jianzhang; Cai, Liping; Sonne, Christian; Le, Quyet Van; Lam, Su Shiung

doi:10.1016/j.cej.2020.126150

Cited by 110 publications

(33 citation statements)

References 48 publications

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“…Cellulose and hemicelluloses contain large amounts of hydroxyl, which makes wood hydrophilic [9]. Therefore, the extraction of cellulose and hemicelluloses can improve the properties of water-resistance wood [9,10]. Thermal modification refers to the heat treatment of wood in steam, air, inert gas, water, or oil, that is, through thermal decomposition of the internal physical and chemical compositions, the growth stress and drying stress of wood can be removed [9,11,12].…”

Section: Introductionmentioning

confidence: 99%

Effect of Thermal Modification on the Nano-Mechanical Properties of the Wood Cell Wall and Waterborne Polyacrylic Coating

Yang

et al. 2020

Forests

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Masson pine (Pinus massoniana Lamb.) samples were heat-treated at different treatment temperatures (150, 170, and 190 °C), and the nano-mechanical properties of the wood cell wall, which was coated with a waterborne polyacrylic (WPA) lacquer product, were compared. The elastic modulus (Er) and hardness (H) of wood cell wall and the coating were measured and characterized by nanoindentation, and the influencing factors of mechanical properties during thermal modification were investigated by chemical composition analysis, contact angle analysis, and colorimetric analysis. The results showed that with the increase in the heat treatment temperature, the contact angle of the water on the wood’s surface and the colorimetric difference increased, while the content of the cellulose and hemicelluloses decreased. After thermal modification of 190 °C, the Er and H of the wood cell wall increased by 13.9% and 17.6%, respectively, and the Er and H of the WPA coating applied to the wood decreased by 12.1% and 22.2%. The Er and H of the interface between the coating and wood were lower than those near the coating’s surface. The Er and H of the cell wall at the interface between the coating and wood were lower than those far away from the coating. This study was of great significance for understanding the binding mechanism between coating and wood cell walls and improving the finishing technology of the wood materials after thermal modification.

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Section: Introductionmentioning

confidence: 99%

Effect of Thermal Modification on the Nano-Mechanical Properties of the Wood Cell Wall and Waterborne Polyacrylic Coating

Yang

et al. 2020

Forests

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“…The rate of weight loss increased again above 300 °C, which was due to the decomposition of cellulose and lignin reaching its maximum at 350 °C. At 400 °C, the lignin decomposition continued with heat treatment up to 800 °C, yielding solid carbon [ 33 ]. Then, above 800 °C, there were no significant mass changes in all samples.…”

Section: Resultsmentioning

confidence: 99%

“…The residual mass losses of the untreated wood, PDMS, and PDMS@wood after TG tests were approximately 14.47%, 6.82%, and 8.94%, respectively. The initial weight loss PDMS@wood samples were 4.5–5% ( Figure 5 A), because of the evaporation of free water [ 33 ]. Then, the first sharp mass loss of almost 80% occurs in the temperature range of 300 to 420 °C for the untreated wood samples, and between 200 to 600 °C for the PDMS@wood, respectively.…”

Section: Resultsmentioning

confidence: 99%

Novel Low-Temperature Chemical Vapor Deposition of Hydrothermal Delignified Wood for Hydrophobic Property

et al. 2020

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As a hydrophilic material, wood is difficult to utilize for external applications due to the variable weather conditions. In this study, an efficient, facile, and low-cost method was developed to enhance the hydrophobicity of wood. By applying the low-temperature chemical vapor deposition (CVD) technology, the polydimethylsiloxane-coated wood (PDMS@wood) with hydrophobic surface was fabricated employing dichlorodimethylsilane as the CVD chemical resource. The result of water contact angle (i.e., 157.3°) revealed the hydrophobic behavior of the PDMS@wood. The microstructures of the wood samples were observed by scanning electron microscopy and energy dispersive X-ray spectroscopy (EDS) analysis verified PDMS successfully coated on wood surfaces. The chemical functional groups of the PDMS@wood were investigated by Fourier transform infrared (FT-IR) and Raman spectra. The thermogravimetric results indicated the enhanced thermal stability of the wood after PDMS coating. In addition, the stability test of PDMS@wood indicated that the hydrophobicity properties of the PDMS@wood samples were preserved after long-time storage (e.g., 30 days). The scratch test was carried out to examine the abrasion resistance of the hydrophobic coatings on PDMS@wood surface. It was suggested that low-temperature CVD process could be a successful approach for fabricating hydrophobic wood.

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“…2a). [37][38][39] The density of the balsa wood decreased to 0.065 g cm -3 ( Supplementary Fig. 5) and the relative content of lignin and hemicellulose decreased from 25.3% to 4.3% and 28.9% to 17.5%, respectively ( Supplementary Fig.…”

Section: Resultsmentioning

confidence: 99%

An editable shape-memory transparent wood for smart building materials

Wang¹,

Liu²,

Dong³

et al. 2020

Preprint

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Transparent wood (TW) with excellent optical and thermal management performance has been developed recently as a promising energy-efficient building material. Here, an editable shape-memory TW (ESMTW) is developed through in situ polymerization of epoxy vitrimers into a delignified wood scaffold. The ESMTW possesses high strength at low temperature and flexibility at high temperature, while it exhibits excellent shape-manipulation capability under thermal-stimulus. Meanwhile, the ESMTW shows unique light guiding and directional scattering effects. The light illuminance difference observed in our house model with a common glass ceiling is 81 times, whereas it is only 16 times with a ceiling made of the ESMTW. Most importantly, the transmitted light intensity distribution is tunable owing to its shape-management capability. Additionally, the resultant TW possesses great thermal insulation properties, mechanical strength, and high impact absorption ability. The combination of characteristics enables TW to exhibit great promise as an advanced functional and intelligent building material.

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High capacity oil absorbent wood prepared through eco-friendly deep eutectic solvent delignification

Cited by 110 publications

References 48 publications

Effect of Thermal Modification on the Nano-Mechanical Properties of the Wood Cell Wall and Waterborne Polyacrylic Coating

Effect of Thermal Modification on the Nano-Mechanical Properties of the Wood Cell Wall and Waterborne Polyacrylic Coating

Novel Low-Temperature Chemical Vapor Deposition of Hydrothermal Delignified Wood for Hydrophobic Property

An editable shape-memory transparent wood for smart building materials

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