Advanced Composites and Hybrid Materials
·
2021
·Vol. 4
·期 2
·294-305
·
IF 5.693
Zhang Haiquan,Zhong Jie,Liu Zijing,Mai Junping,Liu Houji,Mai Xianmin
Bamboo, as a potential ecological building material, has attracted a lot of attention, due to its wide distribution, more than 1000 species, short growth cycle of 3–5 years, three times the carbon dioxide adsorption of other plants, and tensile strength comparable to steel or concrete. The major challenges of bamboo are the single color and poor anti-microbial corrosion, based on the intrinsic nature of polysaccharides such as cellulose. In this work, a novel bamboo composite material that exhibits a rich variety of colors (red wine, light yellow, coffee, white, black), excellent color retention, and anti-microbial corrosion for 14 days under a relative humidity of 60–95% is prepared by an easy-to-scale chemical grafting method. Oxidation treatment is the basic condition for bamboo to obtain bright colors, and the substitution reaction of the carbon heterocyclic ring of polysaccharide molecules is the inherent reason for bamboo dyeing. For instance, the bamboo treated with nitric acid presents a bright red wine color, and C=N, –NO 2 functional groups are detected. Polyethylene glycol filled in the three-dimensional network avoids the water-soluble nutrients from emigrating to the surface of bamboo. The interruption of the continuous supply route allows the modified bamboo to obtain excellent antibacterial performance. Bright color and anti-microbial corrosion characteristics make the modified bamboo as a green building material has more potential applications. Graphical abstract
研究领域:
材料科学
·
生物学
✓ 已验证
DOI
高影响因子
European Journal of Wood and Wood Products
·
2023
·
IF 2.6
Yang Zheng,Liang Lulu,Dong Qing,Chen Furong,Pang Yajun,Chen Hao,Wu Sai,Shen Zhehong
Bamboo resources can contribute to reducing wood shortages and neutralizing CO 2 . However, laminated bamboo-veneer lumber (LBVL), the main bamboo product, has limited applications due to its poor bonding performance. It is because the urea-formaldehyde (UF) adhesive used in LBVL does not have high bonding stability, which results in the warping and cracking of the board. Therefore, a simple but effective method has been proposed to improve the bonding performance of UF adhesives. Specifically, UF adhesives are strengthened and toughened through a synergistic interaction with acrylate emulsion and clay minerals. Consequently, the prepared LBVL shows excellent bonding strength with an average dip-peeling of 0.92 cm. Furthermore, compared to the unmodified UF adhesive, the synergistically enhanced UF adhesive has a prolonged gelation time, a lower free formaldehyde release level, and improved thermal stability. In addition, the prepared LBVL exhibits reduced flammability based on cone calorimetry results. Herein, the combined effect of acrylate emulsion and clay minerals was investigated, resulting in a synergistic enhancement of bonding performance and other properties. This enhancement not only contributes to the reduction of wood shortages but also aids in the neutralization of CO 2 .
研究领域:
材料科学
·
林业工程
✓ 已验证
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Haomeng Yu,Zewei Ye,Zhihao Yue,Shitao Shi,Yuanyuan Wang,Jiaqi Liao,Wenwen Zhu,Chencong Liu,Bo Chen,Qingfeng Sun,Xiaoping Shen
The urgent demand for fire-safe coatings in bamboo furniture has driven significant progress in developing halogen-free flame-retardant technologies. This study presents a new multi-synergistic flame-retardant hydrogel coating, composed of methylcellulose (MC), polyacrylamide (PAAm), and tetraethyl orthosilicate (TEOS)-pretreated ammonium polyphosphate (SiO 2 @APP) for bamboo veneers. The uniformly dispersed SiO 2 @APP serves as an acid catalyst and an incombustible gas source, while MC and PAAm act as carbon sources in the fire-resistant C-Si-P-N coating system. Additionally, the hydrogel containing MC and water provides significant heat absorption, improving its flame-retardant efficacy. The limiting oxygen index (LOI) of the resultant hydrogel-coated bamboo (HB) increases significantly from 22.1 % to 55.9 %. Notable reductions of 20.3 % and 53.1 % in the peak heat release rate (PHRR) and total heat release (THR) of the hydrogel-coated bamboo (HB) are observed, respectively, in comparison to the original bamboo. After combustion, the dense hybrid char layer incorporating P, N, and Si effectively impedes heat release and combustible gas diffusion. Additionally, the hydrogel coating exhibits excellent interfacial adhesive strength (125.9 kPa) on the bamboo surface. Through this simple and facile sol-gel preparation process, efficient flame-retardant coatings demonstrate promising potential for biomass-based materials in diverse applications, including furniture, commercial buildings, and industrial uses.
研究领域:
材料科学
·
防火技术
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Engineering Materials
·
2022
·
IF 0
Ping Zhang,Meihua Xie,Yangbing Jin,Yizhong Cao,Yutao Yan,Zhe Wang,Chunde Jin
Solar seawater evaporation is an emerging solution to combat the global water shortage problem. Bamboo is valued due to its porosity, thermal insulation, and hydrophilic properties in areas facing the problem of seawater evaporation. However, the surface of pure bamboo is not strong enough to absorb sunlight, resulting in low solar water evaporation efficiency. Hence, we used an uncomplicated surface self-assembly method to load pollution-free polydopamine on pure bamboos by hydrogen bonding. The decoration of black polydopamine enhances the absorption of sunlight throughout the device. Considering the advantages of bamboo as a substrate material and polydopamine as a photothermal conversion layer, the PDA-bamboo proves effective in solar seawater evaporation. The evaporation device can achieve an evaporation rate of 1.095 kg m–2 h–1 and evaporation efficiency of 73.64% under one solar illumination. The PDA-bamboo also finds wide application in water purification. Furthermore, PDA-bamboo is highly reusable and can maintain steady after 21 times of repeated use. The results suggested that the PDA-bamboo evaporation device can play a significant role in solving the problem of the scarcity of earth’s water.
研究领域:
材料科学
·
环境工程
·
能源技术
✓ 已验证
DOI
INDUSTRIAL CROPS AND PRODUCTS
·
2024
·
IF 5.6
Hao Jia,Xiong Jing,Wenhui Su,Huimin Yang,Shaohui Fan,Yutong Sun
Bamboo is a sustainable and environment-friendly polymer. In order to investigate the effect of photoaging on the service-life of bamboo, ultraviolet aging (UV-aging), light-avoidance −90 %RH (AL-90 %RH), light-avoidance (AL) and control were continuously monitored for 26 weeks under four kinds of light conditions. The surface color, micro-morphology and surface interfacial composition of comparing various bamboo samples during storage. The results showed that the total color difference for the cortex (9.758 ± 0.712) and pith (1.325 ± 0.075) under AL conditions were lower than the other three sets of storage conditions, and L* values were reduced by 56.42 % and 53.73 %, respectively. In addition, microflora and grooves were formed on the surface of bamboo stored under AL-90 %RH conditions. Meanwhile, catheters were the main channels for the propagation of mycelium in bamboo. Moreover, the Cox/unox value (an oxygenated to unoxygenated carbon ratio of 0.964) increased sharply under these conditions. UV-aging destroyed the texture and structure of bamboo tissue cells and surfaces, degraded the surface lignin content by 18.89 %, and exposed more observable hemicellulose and cellulose functional groups, thus increasing the carbon binding energy and becoming more difficult to degrade. Finally, the Long Short-Term Memory (LSTM) neural network model was used to predict the fading of the surface color and the volatile compounds after aging, and different photoaging color indication systems were established. Exploring the aging mechanism of bamboo during storage is important for promoting the development of bamboo industry and replacing plastic products, and helping in determine the practical applications of the proposed strategies, their economic benefits and limiting of bamboo photodegradation under optimal warehousing conditions. This meet the current requirements of sustainable development by preserving bamboo resources and use instead renewable resources for both environmental and economic benefit.
研究领域:
材料科学
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高分子化学
·
环境友好材料
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可持续发展
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表面化学
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生物降解
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 45
·e53106
·
IF 3.057
Sai Wu,Lulu Liang,Furong Chen,Zheng Yang,Yu Zheng,Yitian Wu,Lanze Li,Gaobo Lou,Juntao Dai,Yajun Pang,Hao Chen,Qun Fang,Zhehong Shen
The utilization of bamboo resources can significantly alleviate the wood shortage and facilitate CO 2 neutralization. However, the adhesive bonding performance of bamboo is not ideal, which greatly limits its application. Therefore, the biggest challenge is to explore a simple and effective method to enhance the bonding between bamboo and adhesive. In this study, we synthesized three butyl acrylate-styrene (BS) emulsions with different monomer ratios and incorporated them into urea-formaldehyde (UF) resins to prepare butyl acrylate-styrene modified urea-formaldehyde (BUF) adhesives. Results show that BS emulsion not only prolongs the workability time of UF adhesives (95 s–108 s), but also reduces the free formaldehyde content (0.38%–0.26%). Specifically, BS emulsion with the highest hard/soft monomer ratio makes BUF adhesive the lowest activation energy, showing the accelerated curing reaction. Specifically, the prepared laminated bamboo-veneer lumber (LBVL) exhibits the best wet-bonding strength and meets the Chinese National Standard, suggesting that BS emulsion with a higher hard/soft monomer ratio can enhance bonding performance. Thus, this efficient method can not only enhance various adhesive properties, but also improves the bonding performance on LVBL, which can greatly ease the shortage of wood resources and speed up the development of the bamboo industry.
研究领域:
林业科学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2023
·
IF 9.4
Xianfeng Yue,Rong Zhang,Xiaobei Jin,Xiaofeng Zhang,Gege Bao,Daochun Qin
Heating, ventilation, and air conditioning consume 60 % of total energy of building. Phase change materials (PCMs) can help to reduce the energy consumption of heating and increase the building energy efficiency . In this study, three kinds of porous bamboo-derived materials (bamboo powder, bamboo charcoal, and activated bamboo carbon) were used as the framework/skeleton of paraffin to form PCMs with hierarchical structures. Each bamboo-derived material was produced in a low-cost and environmental method. In the hierarchical structure, generous macropores in bamboo powder typically provided sufficient space for loading paraffin and obtained high heat latent (99.81 J/g), while micropores in bamboo charcoal and activated carbon shown greater molecular force such as capillary force to prevent leakage. Further, the highest thermal conductivity of bamboo-derived PCMs was approximately 2.17 times higher than that of pure paraffin. The simulated temperature test shown that the bamboo-derived PCMs can effectively reduce temperature fluctuation with high thermal energy storage capacity. This study proved that the bamboo-based PCM is promising in building temperature regulation applications.
研究领域:
材料科学
·
能源工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Qian Feng,Jiarui Lu,Zhangmin Wan,Sicong Tan,Chuchu Chen,Weibing Wu,Junfeng Wang,Zhaoyang Xu
Solar-powered steam generation and desalination by interfacial solar steam generation (ISSG) are promising techniques for addressing the freshwater shortage. However, the insufficient conversion efficiency and complex pollutant components confine its further extension and application. This study innovatively constructs an orientational graphene/bamboo evaporator (GBE), maintaining a solvent-accessible surface area and reducing vaporization enthalpy by selective delignification and torrefaction. The GBE device features a channel oriented from bamboo, consolidating the parallel architecture with multilayer biofilm filtration that guides efficient bulk-water pumping, steam release, and pollutant interception. The GBE demonstrates full-spectrum optical absorption at 90.5 % and 33.4 s response time while maintaining operational stability across different salt concentrations and natural water environments. The GBE achieved an evaporation rate of 1.53 kg m -2 h -1 as 4.34 enhancement factor under 1 kW/m −2 (−|-) illumination, surpassing microplastics (99.84 %) and tetracycline (99.87 %) desalination. This work provides a high-performance and innovative approach to bamboo evaporator design, offering a viable and alternative method to address freshwater shortage.
研究领域:
材料科学
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Cleaner Production
·
2025
·
IF 10
Xiaolong Li,Haonan Ding,Yu Wang,Jinhai Guo,Yanjun Li,Tiancheng Yuan
To increase the added value of sliced bamboo veneer, this study employs sliced bamboo veneer as a raw material to successfully fabricate magnetic bamboo-based composites using chemical co-precipitation and one-step pyrolysis methods. The microstructure, composition, and electromagnetic wave absorption properties of the prepared composites were systematically investigated. By optimizing the synthesis conditions, Fe 3 O 4 nanoparticles were uniformly embedded within the bamboo-derived carbon framework, forming synergistic interactions that enhanced both dielectric and magnetic loss. X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) analyses confirmed the stable presence of Fe 3 O 4 in the composite, significantly improving electromagnetic wave attenuation through interfacial polarization and resonance absorption. Electromagnetic parameter testing revealed that the prepared composites exhibited excellent electromagnetic wave absorption performance within the 2–18 GHz frequency range, achieving an optimal reflection loss of −58.6 dB at 8.08 GHz and an effective absorption bandwidth (EAB) of 2.57 GHz. Simulation results demonstrated that MB-1.5 exhibited the highest electromagnetic attenuation capability. Compared to conventional carbon-based absorbers, this magnetic bamboo-based composite not only offers the advantages of lightweight structure and high absorption efficiency but also exhibits renewability and environmental friendliness. This study presents a novel and sustainable approach for the development of electromagnetic wave absorption materials.
研究领域:
材料科学
·
环境科学
·
电磁学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE ENERGY INSTITUTE
·
2025
·
IF 6.2
Wang Lu,Mingwei Xia,Ziyue Tang,Yingquan Chen,Xianhua Wang,Haiping Yang,Hanping Chen
Poly-generation of porous char and H 2 -rich syngas is a key technology for the full and high-value use of carbon and hydrogen elements in biomass. In this study, the synergistic evolution and regulation mechanisms of H 2 and porous carbon during K-assisted bamboo gasification were investigated using fixed-bed pyrolysis-gasification system. The results show that, due to steam activation, both the H 2 production rate and the physicochemical properties of char initially increase and then decline with prolonged gasification time, reaching their peak in the middle stage of the process. The hydrogen conversion rate further indicates that partial gasification achieves higher production efficiency, which is favorable for the poly-generation. K accelerates the evolution of both char and H 2 , enhancing their quality and ultimately enabling the poly-generation of 31.5 mmol/g H 2 and porous carbon with a S BET of 1917 m 2 /g. Moreover, K promotes oxygen enrichment in char, particularly the incorporation of O=C-OR and C=O groups on the char surface, thereby improving the functional applicability of the carbon.
研究领域:
能源化学
·
生物质转化
·
催化化学
·
环境功能材料
·
热化学转化
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2023
·
IF 5.9
Qiuqin Lin,Qi Gao,Xueyuan Wang,Shiqin Liu,Wenji Yu,Yuxiang Huang
High-performance bamboo veneer composite (BVC) is a typical application to achieve high efficiency of bamboo for sustainable engineering. As the important pretreatment during the manufacture process of BVC to improve dimensional stability and weather resistance, thermal treatment would weaken mechanical properties, whose influence mechanism has not been determined. Herein, we mainly focus on the main bearing substance of BVC- bamboo cellulosic fibers (BCFs), to expound the inherent interrelationship between macro-mechanical properties of BVC and microstructure of BCFs by studying their micro-mechanical properties, crystal structure, hydrogen bonding system, chemical structure and degree of polymerization (DP) under thermal treatment (140 °C and 200 °C). With the temperature increased, the diameter and orientation of BCFs basically remained unchanged, the crystallinity increases slightly, but the DP of BCFs decreased, causing the decrease of microscopic tensile properties of BCFs. Macro-mechanical properties of BVC are positively correlated with the micro-mechanical properties of BCFs.
研究领域:
材料科学
·
林业工程
·
生物材料学
✓ 已验证
产品关联
DOI
高影响因子
Journal of Energy Storage
·
2020
·
IF 3.762
Nianrong Feng,Yexin Liang,Dongying Hu
In this study, the porous bamboo material (DB) was obtained by removing the intercalated substance between the fibers through a simple delignification process, and was used as support matrix by impregnating a reversible thermochromic compound (BP: BPA: TD) to prepare a shape-stable bamboo-based composite reversible thermochromic phase change material (TBB-DB). Fourier Transform infrared spectroscopy (FTIR) and X-ray diffraction (XRD) analysis of bamboo and DB showed that lignin was removed from bamboo by the delignification process. The open porous structure founded in scanning electron microscopy micrographs allows the rapid impregnation of TBB to achieve reversible thermochromic and phase change storage properties. The reduction in surface roughness and contact angle leads to an increase in the hydrophilicity of the DB for the subsequent impregnation of the TBB into the porous structure of DB. DB also showed good mechanical properties and thermodynamic stability. The effects of different proportions of the color developer and the solvent in the compound TBB on the reversible thermochromic and phase change energy storage properties of TBB-DB were investigated. TBB-DB1:4:50 showed a better reversible thermochromic properties and energy storage properties (the highest latent heat, favorable melting and crystallization temperatures). As for TBB-DB1:4:50, the FTIR, XRD, thermal stability analysis showed that there is no chemical reaction occurred during the entire impregnation process, which is conductive to the reversible thermochromic phase change energy storage characteristics of TBB-DB1:4:50. The color of TBB-DB1:4:50 changed from rose red to white as the temperature increased. Compared with DB, TBB-DB1:4:50 showed endothermic and exothermic peaks, and its ΔH m and ΔH L+S were 113.5 J g −1 and 109.8 J g −1 , respectively, indicating that TBB1:4:50 was well impregnated into DB to form a composite phase change material. TBB-DB1:4:50 also has good durability, making it able to withstand long-term recycling and maintain the original excellent performance.
研究领域:
材料科学
·
高分子化学
·
能源储存
·
功能材料
·
纳米复合材料
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）