A nature-inspired strategy towards superhydrophobic wood

Liu, Shiqin; Zhu, Mengjia; Huang, Yuxiang; Yu, Yanglun; Yu, Wenji; Lv, Bin

doi:10.1039/d3ta05013k

Cited by 11 publications

(4 citation statements)

References 78 publications

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“…It exhibits high specific strength, a favorable modulus, low density, and a short growth cycle . Crucially, the molecular structure of WFs contains a substantial number of hydroxyl and hydrogen bonds, giving it pronounced polarity and water absorbency. , Meanwhile, TA is also a typical and widely used polyphenol which arouses many attentions on wood fiber processing and thus endows TA-based wood fiber composite materials with multifunction such as antibacterial, retardant, and self-cleaning properties . The effective modification of wood fiber by TA is built upon the close binding of TA to the primary wood fiber cell wall component.…”

Section: Introductionmentioning

confidence: 99%

“…30,31 Meanwhile, TA is also a typical and widely used polyphenol which arouses many attentions on wood fiber processing and thus endows TA-based wood fiber composite materials with multifunction such as antibacterial, 32 retardant, 18 and self-cleaning properties. 33 The effective modification of wood fiber by TA is built upon the close binding of TA to the primary wood fiber cell wall component. Therefore, it is essential to investigate the interaction between these components, and further experimental validations are needed to realize the interactions between hemicellulose and lignin with TA.…”

Section: Introductionmentioning

confidence: 99%

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Unraveling the Intricate Interaction: Bonding Mechanism between Tannic Acid and Wood Fibers

Liu,

Ji,

et al. 2024

ACS Sustainable Chem. Eng.

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Due to the biodegradable, biocompatible, sustainable, and renewable properties of lignocellulosic materials, there is growing interest in developing functional materials based on lignocellulosic components using green strategies. For example, the surface of lignocellulosic materials can be modified using polyphenols with inherent characteristics such as metal chelation and reducibility to prepare functional materials with flame retardant, antibacterial, and self-cleaning properties. Understanding the fundamental interaction mechanisms between lignocellulosic materials and polyphenols is crucial for these applications and the design of lignocellulosic-based functional materials. In this study, we used wood fibers (WFs) and tannic acid (TA) as typical representatives of lignocellulosic materials and polyphenols, respectively. We combined adsorption isotherm models and density functional theory simulations to reveal the interaction mechanisms between the main components of WFs (cellulose, hemicellulose, and lignin) and TA. Cellulose and hemicellulose primarily interacted with TA through hydrogen bonding, electrostatic interaction, and hydrophobic interaction, while lignin−TA interactions are hydrogen bonding and electrostatic interaction. For WFs, their pore structure and exposed surface components determined their binding with TA. The adsorption of TA on WFs followed the Langmuir model for monolayer adsorption, with the main driving forces being hydrogen bonding, electrostatic interactions, and van der Waals forces between surface cellulose components and TA. Our findings provide new insights into the interaction mechanisms between lignocellulosic materials and polyphenols, offering valuable guidance for the development of lignocellulosic/polyphenol composite functional materials with environmental, biomedical, and engineering applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Unraveling the Intricate Interaction: Bonding Mechanism between Tannic Acid and Wood Fibers

Liu,

Ji,

et al. 2024

ACS Sustainable Chem. Eng.

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“…The dimensional stability of wood or non-wood composites is an important characteristic of consumer concern that demands comprehensive understanding (Okuda and Sato 2007;Yuan et al 2014Yuan et al , 2019. Under normal circumstances, a waterproof barrier can be achieved by completely covering the surface of the composite board with a dense polymer layer or coating (Gao et al 2023;Liu et al 2023;Tao et al 2023). The application of nanotechnology has been shown to improve the surface properties of materials, leading to their high durability.…”

Section: Introductionmentioning

confidence: 99%

Enhanced dimensional stability of straw-based biocomposites modified with UV light-cured coatings

Yuan,

Sun,

et al. 2024

BioRes

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This study demonstrated an effective method to enhance the dimensional stability of straw-based biocomposites with modified lignosulfonate as a binder. The ultraviolet (UV) light-curable nanosol was prepared by adding 3-(trimethoxysilyl)propyl methacrylate (MEMO) as sol–gel precursor into polyvinyl alcohol (PVA) solution. The MEMO/PVA coatings were generated using 2-hydroxy-2-methyl-1-phenylpropan-1-one (Darocur 1173) as radical photo-initiator and chitosan (CS) as additive, on straw-based biocomposites via UV-curing process. The effects of the crucial steps, such as the UV-curing process, hydrolysis time, Darocur 1173 dosage, and CS dosage on the dimensional stability of straw-based biocomposites, were evaluated. The optimum preparation parameters, obtained using the Box–Behnken design, were 31.9 min hydrolysis time, 4.5% Darocur 1173 dosage, and 2.7% CS dosage. Moisture resistance of minimum TS of CS-MEMO/PVA-coated straw-based biocomposites resulted in ~23.1% reduction in dimensional stability without significant decline in the mechanical properties when compared with those without UV curing. Moreover, the glossy spherical particles underwent arrangement in a fish-scale shape with scales closely linked with each other and no agglomeration occurred in CS-MEMO/PVA hybrid film. The CS promoted the cross-linking of MEMO/PVA coating on the biocomposite surface. The resulting biocomposites can be directly applied to public humid-environment applications such as bath furniture and bathroom partitions.

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“…These surfaces find applications in various fields, including self-cleaning, − water-repellent properties, , oil–water separation, − antibacterials, anti-icing, , and antifogging. , To construct a superhydrophobic surface, two factors are critical: a low surface energy and a micronano rough structure. In recent studies, various strategies such as dip-dry coating, − spray coating, layer-by-layer self-assembly, templating, , chemical vapor deposition, and sol–gel process − have been used to establish a superhydrophobic surface. While coatings with ZnO, − MOFs, , SiO 2 , − and TiO 2 , have been designed for durability improvement.…”

Section: Introductionmentioning

confidence: 99%

Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation

Chen,

Yang,

Feng

et al. 2024

ACS Appl. Nano Mater.

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The practical applications of superhydrophobic fabrics face challenges such as inadequate durability and dependence on toxic fluorine-containing reagents. In this work, a robust, multipurpose, and fluoride-free superhydrophobic fabric is engineered. The fabrication process involves the preparation of a petal-like nano-SiO 2 (PNS) using a two-phase layering approach. The pleated structure of PNS contributes to excellent roughness on the fabric surface, while the strong adhesion of polydopamine (PDA) serves as an intermediate layer, enhancing the durability and stability of the hydrophobic fabric. Additionally, the surface energy of cotton is reduced by polydimethylsiloxane (PDMS) coating. The resulting fabric coated with PDMS/PNS−PDA exhibits an exceptional water contact angle of 166.3°, a remarkably low sliding angle of only 3.6°, and excellent mechanical stability that can withstand 50 washing cycles and 30 Martindale abrasion cycles. Moreover, the superhydrophobic fabric demonstrates prominent antifouling and self-cleaning properties along with oil−water separation efficiency (>98%), water-in-oil emulsion (96%), and reusability for oil−water separation. Overall, the engineered superhydrophobic fabric shows promising potential in oil−water separation and the development of functional textiles.

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A nature-inspired strategy towards superhydrophobic wood

Abstract: Plant polyphenols are a type of natural substance widely present in plants, which can form three-dimensional metal-phenolic networks (MPNs) via chelation with metal ions, thereby enabling the construction of functional material coatings.

Cited by 11 publications

References 78 publications

Unraveling the Intricate Interaction: Bonding Mechanism between Tannic Acid and Wood Fibers

Unraveling the Intricate Interaction: Bonding Mechanism between Tannic Acid and Wood Fibers

Enhanced dimensional stability of straw-based biocomposites modified with UV light-cured coatings

Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation

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A nature-inspired strategy towards superhydrophobic wood

Abstract: Plant polyphenols are a type of natural substance widely present in plants, which can form three-dimensional metal-phenolic networks (MPNs) via chelation with metal ions, thereby enabling the construction of functional material coatings.

Cited by 11 publications

References 78 publications

Unraveling the Intricate Interaction: Bonding Mechanism between Tannic Acid and Wood Fibers

Unraveling the Intricate Interaction: Bonding Mechanism between Tannic Acid and Wood Fibers

Enhanced dimensional stability of straw-based biocomposites modified with UV light-cured coatings

Fluorine-Free Superhydrophobic Petal-like SiO2 Nanostructure Supported on Cotton for Oil–Water Separation

Contact Info

Product

Resources

About

Fluorine-Free Superhydrophobic Petal-like SiO₂ Nanostructure Supported on Cotton for Oil–Water Separation