ADVANCED MATERIALS
·
2012
·Vol. 24
·期 14
·1856-1861
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IF 13.877
Zelin Dong,Changcheng Jiang,Huhu Cheng,Yang Zhao,Gaoquan Shi,Lan Jiang,Liangti Qu
Graphical Macroscopic graphene fibers with strength comparable to carbon nanotube yarns have been fabricated with a facile dimensionally-confined hydrothermal strategy from low-cost, aqueous graphite oxide suspensions, which is shapable, weavable, and has a density of less than 1/7 conventional carbon fibers. In combination with the easy in situ and post-synthesis functionalization, the highly flexible graphene fibers can be woven into smart textiles.
研究领域:
材料科学
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纳米技术
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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
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2021
·Vol. 138
·期 31
·50774
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IF 3.125
Jia-Le Li,Quan-Ping Zhang,Xue Liu,Rui-Chao Chen,Wei-Di Xu,Nan Sun,Yin-Tao Li,Wen-Bin Yang,Dui-Gong Xu,Yuan-Lin Zhou
Flexible materials with excellent radiation shielding and flexibility are essential to the personal protective equipments (PPEs) for protecting workers from nuclear radiations. However, it is an enormous challenge to obtain the desired materials since high loading filler in polymer nanocomposites usually promotes radiation shielding while restrains its flexibility. Here, a facile “thiol-ene click” means is applied to chemically bond high loading boron nitride (BN) nanoparticles with silicone rubber (SR) in SR/BN nanocomposites for thermal neutron shielding. Uniform dispersion of BN nanoparticles and good compatibility of interfaces in the nanocomposites with high loading filler lead to increased flexibility instead of decrease. In particular, the nanocomposite with 40 wt% BN displays 911% of elongation at break that is about 50% enhancement to that of neat SR. Furthermore, higher loading BN in the nanocomposites means better thermal neutron shielding. Namely, enhanced thermal neutron shielding and flexibility is achieved at SR/BN nanocomposite with 40 wt% BN. The present work provides a facile strategy towards superior integrated performance of flexible materials for radiation shielding, such as wearable devices.
研究领域:
材料科学
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核工程
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化学工程
✓ 已验证
DOI
高影响因子
RSC Advances
·
2018
·Vol. 8
·期 62
·35429-35436
·
IF 2.936
Shumei Tang,Yu Xu,Gehong Su,Jianjun Bao,Aimin Zhang
Stretchable and flexible photoelectric materials are highly desirable for the development of artificial intelligence products. However, it remains a challenge to fabricate a stable, processable, and cost-efficient material with both high photoelectric sensitivity and remarkable deformability. Herein, a new kind of photoelectric sensitive, highly stretchable and environmentally adaptive materials was developed through in situ synthesis and π–π conjugation design. Specifically, a photoelectric elastomer zinc porphyrin SEBS(Zn-PorSEBS) was synthesized by introducing porphyrin to SEBS chain via a one-pot method. Then, graphene/zinc porphyrin SEBS (G/Zn-PorSEBS) composites were obtained by combing the elastomer with graphene sheets through solution blending. Notably, the resultant flexible composites were capable of capturing light changes with illumination on or off, and the maximum photocurrent density reached 0.13 μA cm−2. Moreover, the photoelectric composites exhibited a dramatic elongation (more than 1000%) and an excellent tensile strength about 20 MPa. This proposed strategy represents a general approach to manufacture photoelectric and flexible materials.
研究领域:
材料科学
·
光电化学
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纳米技术
✓ 已验证
DOI
PubMed
高影响因子
ACS Applied Energy Materials
·
2021
·
IF 6.024
Meng Li,Fengxing Jiang,Jiaji Yang,Yeye Wang,Feng Zhao,Xinjin Xu,Mengting Liu,Jiaqi Yan,Jingkun Xu
Flexible thermoelectric (TE) materials have received significant attention for their key role in developing renewable energy. Polypyrrole (PPy) film, as a promising TE material, shows poor flexibility and electrical conductivity by common oxidation polymerization due to π-conjugated rigid molecules. However, the dynamic conductive network formed between soft and rigid conductive polymers can dissipate mechanical energy while maintaining the integrity of the π-conjugation structure, enabling flexible and conductive thin films. To obtain a flexible free-stranding PPy film, pentaerythritol ethoxylate (PEE)-borate was introduced into the PPy matrix to form a dynamic composite network (PPy/PEE) and enhance the elongation at the break (∼5.4%) due to the strong intermolecular interaction between PPy and PEE with the dopant anions (BF3–). The as-prepared PPy films obtained at the PEE concentration of 0.07 M have achieved an enhanced electrical conductivity as high as 132.30 S cm–1 and a power factor of 0.33 μW m–1 K–2. After the electrochemical treatment at 0.8 V, the electrical conductivity and power factor are further improved to 177.83 S cm–1 and 0.54 μW m–1 K–2, respectively. The Seebeck coefficient dramatically increased up to 17.27 μV K–1 in the dedoped state. The PPy/PEE composite film still exhibits good flexibility after electrochemical dedoping, which makes it a promising way to optimize TE for flexible PPy films.
研究领域:
材料科学
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能源技术
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高分子化学
✓ 已验证
DOI
高影响因子
Journal of Water Process Engineering
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2021
·
IF 5.485
Qian Zhao,Liang Hao,Fei Li,Tongyang Liu,Yiqiang He,Jun Yang,Yifan Zhang,Yun Lu
The hydrothermal method was used to prepare flexible BiOCl-BiOI films on one stainless steel wire mesh. Nano-flower like BiOCl-BiOI crystals consisted of nanoplates were formed, and BiOCl was uniformly distributed. The XPS (X-ray photoelectron spectroscopy) spectra confirm the formation of BiOCl-BiOI heterojunction, which enhanced the visible light absorption of the BiOI film. The photocatalytic activity of the BiOCl-BiOI film in degrading RhB and MB was elevated by at most 8.7 and 2.4 times, respectively, comparing with the individual BiOI film. We designed and constructed a piezo/photocatalytic platform in which the prepared BiOCl-BiOI films were fixed on a rotating shaft. Compared with the static state, the photocatalytic activity of the BiOCl-BiOI film was increased by 1.4 times when the shaft was rotating. We believe that the enhancement of the photocatalytic activity should be ascribed to the piezoelectric field by introducing bending deformation, which accelerated the separation of photogenerated electrons and holes. The improvement mechanism of the photocatalytic and piezo/photocatalytic performance was proposed and discussed. The flexible BiOCl-BiOI heterojunction films show significant application potential in the pollution control of fluid fields such as rivers, oceans, waterfalls, and air.
研究领域:
材料科学
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环境科学
✓ 已验证
DOI
高影响因子
Journal of Environmental Chemical Engineering
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2025
·
IF 7.2
Meng-Jie Chang,Ge Bai,Jun Liu,Xin Li,Hui Wang,Shu-Yi Hu,Qiu-Yu Hu,Shi-Shun Cao,Jie Yang
We presented a novel strategy to construct flexible SiO 2 nanofibrous silica aerogel (SNF/SAG) for ultrahigh oil adsorption by controlling the mechanical property of SiO 2 nanofibers (SNFs). The SNF/SAG was constructed assisted with flexible SNF template and low content methyltrimethoxysilane (MTMS) and dimethyldimethoxysilane (DMDMS) co-precursors by sol-gel and ambient pressure drying processes. The prepared SNF/SAG is assembled with core/shell fibrous skeleton with coarse surface by hydrolyzed silica particles accumulated on the SNF surface. The ultralow density (0.0084 g cm −3 ), "Schisandra" like skeleton and hydrophobicity make the SNF/SAG possess very high oil sorption capacity up to 165.6 g g −1 of CH 2 Cl 2 . The SNF/SAG presents excellent flexibility for multiple compression without obvious deformation and crack for stable oil sorption and collection through squeezing. The significant reduction of the organic silane precursors and excellent thermal insulation properties thanks to the high porosity endow the SNF/SAG as promising material for insulation applications in a wide temperature range.
研究领域:
材料科学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Yilin Liu,Wenzhao Geng,Linan Wang,Hailong Wang,Rui Zhang,Di Lan,Bingbing Fan
With the rapid advancement of wearable electronic devices in both civilian and military applications, electromagnetic (EM) pollution has become a growing concern, leading to an increased demand for efficient electromagnetic wave (EMW) absorbing materials. Conventional absorbing materials often suffer from limited design flexibility and challenging processing requirements. To address these issues, this study introduces a series of MXene/Polyacrylamide hydrogels (MPH) with excellent EMW absorption properties, fabricated into complex geometric structures using digital light processing (DLP) printing technology. These functional hydrogels feature a three-dimensional (3D) porous architecture, providing robust mechanical properties and exceptional EMW absorption performance. The MXene component, enriched with surface functional groups, not only improves impedance matching but also synergistically interacts with other dissipation mechanisms to enhance overall EMW absorption. Notably, the MPH-1 specimen demonstrates an outstanding effective absorption bandwidth (EAB) of 7.36 GHz at a thickness of 1.95 mm (10.64–18 GHz), and a minimum reflection loss (RL min ) of −38.20 dB at 10.88 GHz at a thickness of 2.40 mm. This work presents a novel and efficient strategy for the rapid and precise fabrication of gel-based functional materials, offering a straightforward method for developing wearable, flexible EMW-absorbing devices with superior properties.
研究领域:
材料科学
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电磁学
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3D打印技术
✓ 已验证
产品关联
DOI
高影响因子
Polymers
·
2024
·Vol. 16
·期 21
·2987
·
IF 4.7
Yuxin Wang,Yuan Meng,Jin Ning,Peike Wang,Yang Ye,Jingjing Luo,Ao Yin,Zhongqi Ren,Haipeng Liu,Xue Qi,Sisi He,Suzhu Yu,Jun Wei
Electronic skin capable of reliable monitoring of human skin temperature is crucial for the advancement of non-invasive clinical biomonitoring, disease diagnosis, and health surveillance. Ultra-thin temperature sensors, with excellent mechanical flexibility and robustness, can conformably adhere to uneven skin surfaces, making them ideal candidates. However, achieving high sensitivity often demands sacrificing flexibility, rendering the development of temperature sensors combining both qualities a challenging task. In this study, we utilized a low-cost drop-casting technique to print ultra-thin and lightweight (thickness: approximately 3 µm, weight: 0.61 mg) temperature sensors based on a combination of vanadium dioxide and PEDOT:PSS at room temperature and atmospheric conditions. These sensors exhibit high sensitivity (temperature coefficient of resistance: −5.11%/°C), rapid response and recovery times (0.36 s), and high-temperature accuracy (0.031 °C). Furthermore, they showcased remarkable durability in extreme bending conditions (bending radius = 400 µm), along with stable electrical performance over approximately 2400 bending cycles. This work offers a low-cost, simple, and scalable method for manufacturing ultra-thin and lightweight electronic skins for temperature monitoring, which seamlessly integrate exceptional temperature-measuring capabilities with optimal flexibility.
研究领域:
生物医学工程
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材料科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Shaochen Sun,Yan Zhu,Tianyu Li,Guangqun Wang,Faqu Yin,Fei Li,Farong Tao,Liping Wang,Guang Li
Organic room temperature phosphorescence (RTP) has promising applications in diverse fields, whereas a formidable challenge remains in the development of flexible organic RTP materials, especially environmentally friendly RTP materials. In this work, natural polymer sodium alginate (SA)-based RTP materials have been facilely developed by doping phenylboronic acid (PBA) and its derivatives into SA matrices. 4-carboxyphenylboric acid doped system SA-CPBA exhibits the best RTP performance with an ultralong phosphorescence lifetime of up to 231 ms. Interestingly, SA-CPBA shows excitation-dependent phosphorescence color tunability by water vapor fumigation and heating, and the afterglow color change has good reversibility upon alternating treatment of water vapor fumigation and heating. Amazingly, flexible and transparent RTP films are obtained through adding a certain amount of glycerol (G) into SA-CPBA matrices, and SA-CPBA-G also possesses excellent excitation-dependent phosphorescence color tunability. Furthermore, the flexible SA-CPBA-G film can be conveniently fabricated on a large area. These excellent features enable the prepared SA-based RTP materials to be successfully applied in the fields of flexible display and information encryption. This work provides a guideline for the preparation of environmentally friendly flexible polymer-based color-tunable RTP materials and expands the application range of SA-based materials to the field of flexible displays.
研究领域:
材料科学
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光学
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环境科学
✓ 已验证
产品关联
DOI
高影响因子
ACS Applied Polymer Materials
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2024
·
IF 4.4
Hui Zhang,Chen Fu,Liu C. Yong,Nan Sun,Feng G. Liu
High-dielectric-constant poly(vinyl alcohol)/cellulose nanofibril (PVA/CNF) hydrogels were synthesized by a convenience method. An ultrahigh dielectric constant of approximately 4.58 × 109 was obtained for the designed flexible hydrogel at the frequency of 0.1 Hz, and the dielectric loss was also simultaneously about 2.02. The high dielectric constant probably originated from the interfacial polarization arising from the porous and cross-linked structure of the polymer. The abundant hydrogen bonds between PVA and CNFs promote the formation of cross-linked networks. Such materials may break the restrictions on the applications of traditional dielectric materials and expand the usage of dielectric polymers in broad fields.
研究领域:
材料科学
·
生物材料
✓ 已验证
产品关联
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Meiping Song,Zhi Liu,Yu Wang,Chenhui Liu,Jiancheng Guo,Wei Wang,Xueping Gao,Bo Zhu,Xiaomin Yuan
Paper-based composites are excellent choice for flexible electromagnetic shielding materials. Carbon fiber paper (CFP), with its excellent electrical conductivity and porosity, can be combined with various conductive materials to further improve electromagnetic interference (EMI) shielding capabilities. However, the large-scale industrial application of CFP remains rarely explored and requires further research to optimize its overall performance for commercialization. MXene, a 2D material with metal-like conductivity, can significantly enhance electromagnetic wave (EMW) energy loss. This study investigates the effects of MXene concentration gradients and the number of sprayed layers on EMI shielding effectiveness of carbon fiber paper using a simple spraying process. The electromagnetic shielding composite paper is fabricated through a impregnation blending technique, while the correlation between the number of layers and EMI shielding efficiency is systematically investigated. Results show that a 7-layer composite paper achieves an average EMI SE of 78.23 dB in the X─band. The composite also exhibits excellent hydrophobicity, high tensile strength, flexibility, and ultra-lightweight properties. The surface density of the 7-layer assembly material is only 0.08546 g cm −2 . The straightforward preparation process of this electromagnetic shielding composite paper makes it highly suitable for industrial-scale production, demonstrating significant potential in aerospace, 5G technology, and other related fields.
研究领域:
材料科学
·
电磁学
·
工业制造
✓ 已验证
产品关联
DOI
高影响因子
DYES AND PIGMENTS
·
2021
·
IF 4.889
Yu Kuai,Tao Yang,Feiya Yuan,Yujie Dong,Qingbao Song,Cheng Zhang,Wai-Yeung Wong
A new metallo-supramolecular film was prepared by a liquid–liquid interface self-assembly method based on the metal ion Fe(II) in water solution and a star-shaped ligand of triphenylamine-substituted alkyl terpyridine in organic solvents . The film obtained exhibited excellent flexibility due to the presence of flexible alkyl arms, and could tightly adhere to the surface of ITO glass with very smooth surface morphology via SEM characterization. Spectroelectrochemical experiments demonstrated that the film displayed the electrochromism with purplish color in the neutralized state at 0 V vs Ag/AgCl turning to yellow-green color in the oxidized state at 1.2 V vs Ag/AgCl. This work further indicates that the liquid–liquid interfaciad self-assembly method is a promising strategy to prepare the metallo-supramolecular film towards electrochromic applications.
研究领域:
材料科学
·
电化学
·
超分子化学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）