EUROPEAN POLYMER JOURNAL
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2025
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IF 6.3
Lifan Li,Yanhao Chen,Jiapeng Ye,Deming Zhou,Lingxiao Jing,Zaixing Zhang,Kun Luan,Junjuan Huang,Xin Tang,Tonghua Zhang
With growing environmental awareness and a focus on sustainable development, the recycling and utilization of natural fibers and renewable resources have become critical issues in recent years. Windmill palm fibers (WPFs) are composed of cellulose microfibrils within a matrix of hemicellulose and lignin, which can harbor bacteria and pose a health risk to the wearer in humid environments. They are also highly flammable resulting in safety hazards during industrial production and use. In this study, we used a click chemistry strategy to conduct a surface modification on WPFs. The treated fibers are fire redundant and antibacterial. The treatment includes two steps: first step is delignification and hemicellulose removal followed by silanes treatment; second step is the click chemical reaction with 6-(((1H-1,2,4-triazol-3-yl)amino)(4-(allyloxy)phenyl)methyl)dibenzo[c,e][ 1 , 2 ]oxaphosphinine 6-oxide (TAPM-DOPO). The burn tests have proved that TAPM-DOPO plays an important role in condensed phase in flame retardancy of WPFs. The sustained burn time was reduced by 71 s. Furthermore, it exhibited excellent bactericidal activity against both E. coli and S. aureus , the inhibition rate reached 99.9% after chlorination. The technology in this study demonstrates a feasible production of the flame retardant and antibacterial WPFs suitable to large-volume manufacturing of textile product.
研究领域:
材料科学
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纺织工程
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生物技术
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Femiana Gapsari,Djarot B. Darmadi,Hans Juliano,Syarif Hidayatullah,Suteja,Sanjay Mavinkere Rangappa,Suchart Siengchin
Natural fibers are available as an essential substitute for synthetic fiber in many applications. However, the sensitivity of Chinese Windmill Palm or Trachycarpus Fortune Fiber (TFF) to water causes low interfacial bonding between the matrix and the fiber and at the end reduces the mechanical properties of the composite product. Alkaline treatment improves mechanical properties and does not affect water absorption. Hence, additional treatment in the coating is required. This study uses alkaline treatment and coating modification using blended chitosan and Acrylated Epoxidized Soybean Oil (AESO). Blend coating between AESO and chitosan is performed to increase water absorption and mechanical properties. TFF water resistance improved significantly after the coating, with water absorption of the alkaline/blend coating-TFF of 3.98 % ± 0.52 and swell ability of 3.156 % ± 0.17. This indicated that blend coating had formed a cross-link of fiber and matrix after alkalization. Thus, the single fiber tensile strength increased due to the alkaline treatment, and water absorption decreased due to the coating. The combination of alkaline treatment and blend coating on TFF brings excellent properties, as shown by the increase in tensile strength in both single fiber test and composite.
研究领域:
材料科学
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复合材料
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纤维科学
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表面化学
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产品关联
DOI
PubMed
高影响因子
Journal of the American Chemical Society
·
2022
·
IF 16.383
Ling Luo,Linan Wang,Jianbang Chen,Jiazheng Zhou,Zhihua Yang,Shilie Pan,Junjie Li
Large second-harmonic generation (SHG) response and broad band gap are two important and competitive parameters. It is difficult to balance them out in one material. In this work, by coupling alkali earth metal (AEM) octahedra with large highest occupied molecular orbital (HOMO)–lowest unoccupied molecular orbital (LUMO) gap and nonlinear optical (NLO)-active tetrahedra units, nine noncentrosymmetric (NCS) compounds, belonging to a new quaternary chalcogenide family AIB3IIC3IIIQ8VI with unique windmill-like [Mg3M3IIIQ24] (MIII = Al, Ga; Q = S, Se) units constructed by alternated [MgQ6] octahedra and [MIIIQ4] tetrahedra, are rationally designed and fabricated. The compounds show a stable structural framework but adjustable optical properties. Among them, NaMg3Ga3Se8 shows a large SHG response (∼1 × AgGaS2 (AGS)), wide band gap (in selenide) (2.77 eV), high laser-induced damage threshold (LIDT) (∼2.3 × AGS), and suitable birefringence (0.079@546 nm). It should be a potential candidate for infrared (IR) nonlinear optical (NLO) materials. The results enrich the chemical diversity of chalcogenides and open an avenue for the development of new IR NLO materials through the octahedra and tetrahedra coupled strategy.
研究领域:
材料科学
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化学
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产品关联
DOI
PubMed
高影响因子
Nano Energy
·
2023
·
IF 17.6
Zhong yuan You,Xin Wang,Fuqi Lu,Shuting Wang,Bingxi Hu,Lian Li,Weihai Fang,Ying Liu
In this work, we design and fabricate a miniature direct current (DC) windmill generator based on dynamic semiconductor/metal Schottky triboelectric nanogenerators (TENGs), demonstrating a novel way for DC electrical power generation by harvesting wind energy. The semiconducting Poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate) (PEDOT:PSS) film and metallic Al foil are designed as the positive-negative friction pair in the DC-TENG, and the softness as well as workability of the friction materials provides excellent flexibility for the design and tailor of a windmill DC-TENG. We systematically studied the effect factors on the output performance of the device, including wind speed, external load, and dimensions of the friction layers. Our device achieves an optimal output performance with a maximum open-circuit voltage (V oc ) of 0.6 V and a maximum short-circuit current (I sc ) of 3.6 μA at the wind speed of 7 m/s for the friction layer area at 2.5 cm 2 . To improve the wear resistance of the devices, we introduce a few lubricating materials at the PEDOT:PSS /Al interface and Polyalphaolefin 4 (PAO 4) can improve both the abrasiveness as well as the V oc and I sc . Our work presents a possible strategy for fabricating miniature windmill DC-TENG and provides a potential supplemental for the traditional electrical magnet windmill with heavy equipment.
研究领域:
能量收集
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材料科学
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纳米技术
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可再生能源
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电气工程
✓ 已验证
产品关联
DOI
高影响因子
CHINESE JOURNAL OF CHEMISTRY
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2022
·Vol. 40
·期 20
·2407-2414
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IF 5.56
Jia-Nuo Li,Xiao-Hui Li,Ying-Xuan Xu,Wenlong Liu,Sheng-Ping Guo
Comprehensive Summary Oxychalcogenides have been drawn much attention to be explored as nonlinear optical (NLO) materials in recent years. To date, all the NLO oxychalcogenides crystallize in low dimensional structures. Herein, a new oxysulfide K 2 Ba 0.5 Ga 9 O 2 S 13 was obtained via three-dimensional (3D) {[Ga 9 O 2 S 13 ] 3– } ∞ polyanionic framework. As the first oxychalcogenide with 3D NLO-acitve polyanionic framework, K 2 Ba 0.5 Ga 9 O 2 S 13 has a wide band gap of 3.72 eV, and exhibits a high laser-induced damage threshold (LIDT, 17 × AgGaS 2 ). It presents moderate phase-matchable NLO response of 0.5 × AgGaS 2 at 2.1 μm and 2 × KH 2 PO 4 at 1.064 μm. The theoretical calculation results indicate that the NLO response is mainly contributed from [Ga(2)S 4 ] unit-built [Ga(2) 3 S 10 ] windmill-like motif. This work may stimulate the exploration of more NLO oxychalcogenides with balanced performances.
研究领域:
材料科学
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光学
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无机化学
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DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
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2021
·Vol. 413
·期 12
·3299-3313
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IF 4.157
Wang Milan,Song Zhihua,Jiang Youwei,Zhang Xiaolin,Wang Lin,Zhao Hongyu,Cui Yutong,Gu Furong,Wang Yunhua,Zheng Guoxia
Here, we present the rational design of a pinwheel-shaped three-dimensional microfluidic paper-based analytical device (3D-μPAD) for specific, sensitive and multiplexed detection of heavy metals in coastal waters. A more homogeneous permeation of fluids along the chip than common design, even under unskilled performance, has been achieved by the elaborate chip design of the hydrostatic balancing inlet port and uniformly stressed reversible sealing. With the combination of ion imprinted polymer grafted CdTe quantum-dots and fluid accumulation pad, 4 metals (Cu 2+ , Cd 2+ , Pb 2+ , and Hg 2+ ) in 1 analysis and 25-fold enrichment for each metal can be simultaneously performed within 20 min, with detection limits of 0.007–0.015 μg/L. It has the ability to selectively recognize these 4 metals in mixtures and immunizing to interferences from components found in coastal waters, which provided results that were in agreement with values gained from atomic absorption. The inexpensive and portable nature as well as the highly sensitive and flexible performance of the new developed 3D-μPAD could make it attractive as an on-site testing approach for marine environmental monitoring. Graphical abstract
研究领域:
分析化学
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环境科学
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微流控技术
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF POWER SOURCES
·
2023
·
IF 9.2
Qiao Liu,Shuhuan Zhang,Lin Tian,Junmin Li,Wenli Ma,Fanghui Wang,Zhiqian Wang,Jing Li,Hong Zhu
In order to optimize the ion transport capacity and chemical stability, precisely control over the polyelectrolyte structure, and the "windmill" shaped branched poly(aryl piperidine) basic membrane is designed and prepared. Considering the consecutive hydrophobic microphase will unavoidably be a barrier to the ion transport between dispersed hydrophilic ion clusters , the introduction of pendant cyclic ammonium and polar 2-(2-chloroethoxy)ethanol within the membrane can generate highly ordered interconnected ion network domains, supplying a three-dimensional path for ion and water transport. In addition, the presence of terminal hydroxyl groups in polar chain segments enables AEMs to obtain dynamic non-covalent crosslinking effects without additional crosslinking agents, improving the toughness of the membrane, which can be used to fabricate ultrathin self-supported membranes with reduced ohmic resistance . The membrane (TPTP-Pip–OH–20%) exhibits high hydroxide conductivity (143.2 mS cm −1 at 80 °C) and maintains conductivity (87.4% retention for more than 60 days) after testing in 2 M NaOH at 80 °C, showing highly alkaline stability. Besides, the single H 2 –O 2 fuel cell based on TPTP-Pip–OH–20% exhibits a peak power density of 405 mW cm −2 at 80 °C. The novel structural design presents promising solutions for high-performance polyelectrolyte conductive membrane materials, which will benefit many fields involving anion-conducting electrolytes.
研究领域:
材料科学
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电化学
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高分子化学
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能源材料
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）