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学者姓名:余雁
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Abstract :
Furfurylation is a promising wood modification approach, but the reduced wood toughness largely limits its application in structural areas. In this study, the mechanical properties of Chinese fir wood treated with furfuryl alcohol (FA) solutions at varying concentrations (5% to 45%) was investigated, focusing on how the distribution of FA resin across multiple scales influences these properties. The findings highlighted that the mechanical performance of furfurylated wood is strongly dependent on the distribution of FA resin. The inhomogeneous distribution of FA resin in the core and surface layers enhanced the bending strength and stiffness of furfurylated wood. At low FA concentrations (below 25%), FA resin mainly deposited in the wood cell walls, while at higher concentrations, FA resin accumulated in cell lumens with the cell walls nearly saturated, causing a 60% reduction in bending toughness. Remarkably, further resin deposition in cell lumens above 25% FA did not compromise toughness. This reduction in toughness was largely attributed to the FA resin infiltrating the cell walls. For the structural application of furfurylated wood, either restricting resin infiltration into the cell walls or modifying FA resin to mitigate brittleness are proposed, thus achieving an optimal balance between dimensional stability and toughness.
Keyword :
Cunninghamia lanceolata Cunninghamia lanceolata toughness toughness wood cell impregnation wood cell impregnation wood modification wood modification
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| GB/T 7714 | Chen, Ye , Chen, Zhaohui , Deng, Zhuohui et al. Resin distribution and mechanical properties of furfurylated Chinese fir wood in relation to furfuryl alcohol concentration [J]. | WOOD MATERIAL SCIENCE & ENGINEERING , 2025 . |
| MLA | Chen, Ye et al. "Resin distribution and mechanical properties of furfurylated Chinese fir wood in relation to furfuryl alcohol concentration" . | WOOD MATERIAL SCIENCE & ENGINEERING (2025) . |
| APA | Chen, Ye , Chen, Zhaohui , Deng, Zhuohui , Hu, Jie , Liu, Wenxuan , Liang, Xuelong et al. Resin distribution and mechanical properties of furfurylated Chinese fir wood in relation to furfuryl alcohol concentration . | WOOD MATERIAL SCIENCE & ENGINEERING , 2025 . |
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Cellulose nanofiber (CNF) foams, promising alternatives to dominant petroleum-based thermal insulation materials, face challenges such as high production costs, poor mechanical stability, and inherent flammability. In this work, a composite foam consisting of CNF and aramid nanofiber (ANF) is fabricated via low-cost ambient drying. Ice template by bidirectional freeze-casting constructs a lamellar structure in the CNF/ANF network. Subsequently, solvent exchange combined with Ca(II) ion cross-linking synergistically strengthens the CNF/ANF network and reduces surface tension during solvent evaporation, thereby avoiding capillary effects during ambient drying, resulting in directional CNF/ANF with low density (14.09 +/- 0.76 mg/cm3) and high porosity (99.04 %). Notably, the prepared ambient-dried CNF/ANF composite foam (Ca-CA-AD) with an aligned structure exhibit anisotropic mechanical and thermal insulation properties, with excellent mechanical robustness (a high specific compressive modulus of 16.71 MPa cm3/g) and outstanding water stability in the axial direction, and super-insulation performance (24.9 +/- 0.06 mW/mK) in the radial direction. Moreover, the ambient-dried Ca-CAAD exhibits outstanding flame retardancy with limiting oxygen index as high as 32.5 %, and a reduced heat release during combustion, compared to its freeze-dried neat CNF and CNF/ANF foams. This work provides insight into the scalable fabrication of mechanically robust and flame-retardant cellulose-based foams with tailored microstructure for thermal insulation.
Keyword :
Ambient drying Ambient drying Cellulose Cellulose Flame-retardant Flame-retardant Ion cross-linking Ion cross-linking Solvent exchange Solvent exchange Thermal insulation Thermal insulation
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| GB/T 7714 | Liu, Zijing , Lin, Xu , Mai, Xueyan et al. Ambient drying fabrication of mechanically robust, flame-retardant, thermal-insulating cellulose/aramid nanofiber composite foam via freeze-casting combined ion cross-linking [J]. | CARBOHYDRATE POLYMERS , 2025 , 353 . |
| MLA | Liu, Zijing et al. "Ambient drying fabrication of mechanically robust, flame-retardant, thermal-insulating cellulose/aramid nanofiber composite foam via freeze-casting combined ion cross-linking" . | CARBOHYDRATE POLYMERS 353 (2025) . |
| APA | Liu, Zijing , Lin, Xu , Mai, Xueyan , Zhuang, Jiandong , Guo, Fei , Yang, Rilong et al. Ambient drying fabrication of mechanically robust, flame-retardant, thermal-insulating cellulose/aramid nanofiber composite foam via freeze-casting combined ion cross-linking . | CARBOHYDRATE POLYMERS , 2025 , 353 . |
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本发明涉及纤维素水凝胶制备技术领域,公开了一种竹材细胞复合纤维素水凝胶及其制备方法和应用。所述纤维素水凝胶的制备方法包括以下步骤:将纯化竹纤维纤维素和纯化竹薄壁细胞加入到预热的离子液体中搅拌,得混合溶液;将混合溶液脱泡,得到水凝胶前驱体;将水凝胶前驱体浸泡在置换溶液中,得到一种竹材细胞复合纤维素水凝胶。本发明制备的竹材细胞复合纤维素水凝胶具有优异的力学性能,拉伸强度可达4.12MPa,杨氏模量可达3.02MPa,韧性可达2.14MJ/m3,电导率可达72.53mS/cm,可随意卷曲,适用于柔性传感器等智能复合材料领域,对高性能水凝胶材料的开发具有重要意义。
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| GB/T 7714 | 余雁 , 胡慧杰 , 任文庭 et al. 一种竹材细胞复合纤维素水凝胶及其制备方法和应用 : CN202510797466.7[P]. | 2025-06-16 . |
| MLA | 余雁 et al. "一种竹材细胞复合纤维素水凝胶及其制备方法和应用" : CN202510797466.7. | 2025-06-16 . |
| APA | 余雁 , 胡慧杰 , 任文庭 , 郭飞 , 杨日龙 , 张雪霞 . 一种竹材细胞复合纤维素水凝胶及其制备方法和应用 : CN202510797466.7. | 2025-06-16 . |
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本发明涉及材料科学领域,公开了一种阻燃竹纤维素基材料及其制备方法和应用。将阻燃剂加入到竹纤维素溶液中得到混合溶液;将混合溶液搅拌均匀,放入模具当中过滤除去多余水分;将所得样品进行干燥处理,即得到阻燃竹纤维素基材料;所述阻燃剂包括蒙脱土与磷酸二氢铵。本发明所得材料的压缩强度和压缩模量分别提升至343.98kPa和4.44MPa,极限氧指数值高达37.4%,在实现显著阻燃性能提升的同时保持良好力学性能。
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| GB/T 7714 | 张雪霞 , 郝珂佳 , 余雁 et al. 一种阻燃竹纤维素基材料及其制备方法和应用 : CN202510720189.X[P]. | 2025-05-30 . |
| MLA | 张雪霞 et al. "一种阻燃竹纤维素基材料及其制备方法和应用" : CN202510720189.X. | 2025-05-30 . |
| APA | 张雪霞 , 郝珂佳 , 余雁 , 杨日龙 , 郭飞 , 蒯炳斌 . 一种阻燃竹纤维素基材料及其制备方法和应用 : CN202510720189.X. | 2025-05-30 . |
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The advent of biomass-origin transparent panels, such as transparent wood, heralds a paradigm shift in the utilization of natural light for energy-efficient construction and a plethora of optical applications. However, it current relies on fossil-based polymers for index-matching, along with a lack of recyclability and constraints in scalable production to larger dimensions. Here, a bottom-up strategy is proposed for preparing sustainable transparent panels from bamboo powder by reconstructing the hydrogen-bond network of cellulose into a dynamic covalent structure via sodium periodate oxidation and water-induced formation of hydrated aldehydes. The resultant all-biobased transparent panels exhibited both high transmittance (>85%) and haze (>75%), excellent mechanical strength (approximate to 83 MPa tensile strength), and remarkable water resistance. Moreover, this transparent panel exhibits potential for perovskite solar cells integration, enhancing power-conversion efficiency from 22.57% to 23.33%. Importantly, the end-of-life transparent panels can be easily recycled via moisture control, or alternatively repurposed as high-performance bio-based adhesives through pulverization and water mixing. This closed-loop recyclability with low carbon footprint, combined with high strength, efficient power conversion, and aqu-recyclability, establishes a sustainable pathway for construction and optical applications.
Keyword :
bamboo bamboo crystalline structure crystalline structure holocellulose holocellulose recyclable recyclable transparent panel transparent panel
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| GB/T 7714 | Ren, Wenting , Lin, Jiande , Liu, Zijing et al. Sustainable, High-Performance, Aqu-Recyclable Transparent Panels via Phase Engineering and Water-Induced Plasticization of Bamboo [J]. | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
| MLA | Ren, Wenting et al. "Sustainable, High-Performance, Aqu-Recyclable Transparent Panels via Phase Engineering and Water-Induced Plasticization of Bamboo" . | ADVANCED FUNCTIONAL MATERIALS (2025) . |
| APA | Ren, Wenting , Lin, Jiande , Liu, Zijing , Huang, Minfeng , Huang, Yuxuan , Li, Jingpeng et al. Sustainable, High-Performance, Aqu-Recyclable Transparent Panels via Phase Engineering and Water-Induced Plasticization of Bamboo . | ADVANCED FUNCTIONAL MATERIALS , 2025 . |
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Wood surface superhydrophobic modification effectively mitigates liquid-water-induced shrinkage/swelling, enhancing dimensional stability. However, most researches focus on wood transverse sections due to inherent roughness, whereas few have achieved superhydrophobicity on environmentally exposed tangential surfaces. Furthermore, practical application of superhydrophobic wood remains challenging due to its poor interfacial stability. Herein, a scalable alkali etching strategy that partially removes hemicellulose/lignin to enhance roughness and active sites on wood tangential surfaces is proposed. Subsequent spraying of hydroxyapatite-polydimethylsiloxane (HAP-PDMS) composite solution forms a robust superhydrophobic coating. Etching-induced microcracks and voids facilitate nanoparticle anchoring, synergistically functioning with the cellular framework as a protective barrier to ensure exceptional durability. The modified surface can withstand mechanical abrasion, chemical corrosion, and UV exposure, retaining superhydrophobicity after 60-day outdoor aging. Notably, it exhibits autonomous self-healing: post seven abrasion-repair cycles, the water contact angle recovers to 142 degrees (92.4% restoration efficiency). This work provides an economical route to engineer stable superhydrophobic tangential wood surfaces, extending product service life.
Keyword :
Alkali etching Alkali etching Exceptional durability Exceptional durability Self-healing Self-healing Superhydrophobic wood Superhydrophobic wood Tangential surface Tangential surface
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| GB/T 7714 | Su, Jiayun , Huang, Minfeng , Zhang, Linxin et al. Achieving durable superhydrophobicity on wood tangential surfaces through alkali-etching-induced roughness [J]. | CELLULOSE , 2025 , 32 (17) : 10293-10305 . |
| MLA | Su, Jiayun et al. "Achieving durable superhydrophobicity on wood tangential surfaces through alkali-etching-induced roughness" . | CELLULOSE 32 . 17 (2025) : 10293-10305 . |
| APA | Su, Jiayun , Huang, Minfeng , Zhang, Linxin , Liu, Yang , Zhang, Xinxiang , Yu, Yan et al. Achieving durable superhydrophobicity on wood tangential surfaces through alkali-etching-induced roughness . | CELLULOSE , 2025 , 32 (17) , 10293-10305 . |
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本发明涉及木材功能化改性领域,公开了一种PVA‑硅溶胶复合溶液和压缩密实化木材及其制备方法。本发明的PVA‑硅溶胶复合溶液采用聚乙烯醇与硅溶胶复合,并通过交联剂,增强改性剂在木材内部的稳定性,从而显著提升压缩木材的变形固定效果,使吸水回复率降低至0.85%,有效解决木材变形回弹问题。此外,本发明PVA‑硅溶胶复合溶液所得压缩密实化木材,还在一定程度上提升了其阻燃性能和力学强度。本发明工艺简单、高效、环保且成本低,是一种绿色环保的木材改性技术。
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| GB/T 7714 | 郭飞 , 胡洁 , 余雁 et al. 一种PVA-硅溶胶复合溶液和压缩密实化木材及其制备方法 : CN202510513086.6[P]. | 2025-04-23 . |
| MLA | 郭飞 et al. "一种PVA-硅溶胶复合溶液和压缩密实化木材及其制备方法" : CN202510513086.6. | 2025-04-23 . |
| APA | 郭飞 , 胡洁 , 余雁 , 郑杰聪 , 张雪霞 , 陈朝卉 . 一种PVA-硅溶胶复合溶液和压缩密实化木材及其制备方法 : CN202510513086.6. | 2025-04-23 . |
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本发明涉及木材加工技术领域,公开了一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法。本发明采用水溶性聚乙烯亚胺与糠醇预聚物发生席夫碱反应,对糠醇树脂进行接枝改性,有效降低糠醇树脂的交联密度,克服了糠醇改性木材脆性大的问题。与传统糠醇改性木材相比,本发明制备的糠醇改性木材的韧性提升了高达90%,同时大幅提升了木材的尺寸稳定性。本发明所述方法反应条件温和,所制备的糠醇改性木材具有与天然木材接近的颜色,可应用糠醇改性木材在建筑结构和装饰领域。
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| GB/T 7714 | 郭飞 , 陈叶 , 余雁 et al. 一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法 : CN202510504538.4[P]. | 2025-04-22 . |
| MLA | 郭飞 et al. "一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法" : CN202510504538.4. | 2025-04-22 . |
| APA | 郭飞 , 陈叶 , 余雁 , 陈朝卉 , 杨日龙 , 张雪霞 . 一种新型聚乙烯亚胺接枝的高韧性糠醇改性木材制备方法 : CN202510504538.4. | 2025-04-22 . |
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本发明涉及环保胶黏剂技术领域,具体公开了一种木质纤维素生物质全组分利用胶黏剂及其制备方法和应用。将大于100目的木质纤维素生物质粉末与预处理液混合,搅拌,然后水洗后过滤,得预处理原料;将预处理原料和选择性氧化剂溶液混合,搅拌反应,然后水洗,过滤分离得沉淀物;将沉淀物和交联剂溶液混合,搅拌反应,水洗过滤至中性后,得到木质纤维素生物质全组分利用胶黏剂。本发明未对木质纤维素生物质中某一成分进行分离,所制备的胶黏剂具有优异的粘接性能、耐水性和耐热性,适用于木材、竹材加工及板材生产。本发明不仅为农林废弃物的高值化利用提供了创新思路,同时也为绿色胶黏剂的研发指出了新方向,有助于推动环保材料发展。
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| GB/T 7714 | 余雁 , 刘子菁 , 任文庭 et al. 一种木质纤维素生物质全组分利用胶黏剂及其制备方法和应用 : CN202510859206.8[P]. | 2025-06-25 . |
| MLA | 余雁 et al. "一种木质纤维素生物质全组分利用胶黏剂及其制备方法和应用" : CN202510859206.8. | 2025-06-25 . |
| APA | 余雁 , 刘子菁 , 任文庭 , 杨日龙 , 郭飞 , 张雪霞 . 一种木质纤维素生物质全组分利用胶黏剂及其制备方法和应用 : CN202510859206.8. | 2025-06-25 . |
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本发明涉及木材压缩密实化领域,公开了一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用。本发明以柠檬酸、氯化铵、衣康酸酐、硼砂为三元复合体系催化剂成分,加入到糠醇树脂中,获得具有高效催化效果的糠醇改性液,并使得糠醇树脂在木材上的固化率可达95%,且糠醇改性后的木材具有优异的力学性能和尺寸稳定性,其抗湿胀系数在66%以上,最高可达75%。本发明的制备方法兼具了简单、高效及木材性能优异等优势,可应用于实际生产,所得糠醇改性压缩木材在尺寸稳定性、力学性能和耐环境变化方面均表现出显著优势,具有广阔的应用前景。
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| GB/T 7714 | 余雁 , 黄闽凤 , 梁云辉 . 一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用 : CN202510528424.3[P]. | 2025-04-25 . |
| MLA | 余雁 et al. "一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用" : CN202510528424.3. | 2025-04-25 . |
| APA | 余雁 , 黄闽凤 , 梁云辉 . 一种用于糠醇改性木材的三元复合催化剂及其制备方法和应用 : CN202510528424.3. | 2025-04-25 . |
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