ACS Omega
·
2021
·
IF 3.512
Chenglong Wang,Fan Meng,Luyang Qiao,Yuyan Xie,Xin Liu,Jinhuan Zheng
A self-lubricating hydrogel filament was achieved by establishing an in situ photocuring system and using camphorquinone/diphenyl iodonium hexafluorophosphate (CQ/DPI) as the blue-light photoinitiators, acrylamide (AM) and N,N-dimethylacrylamide (DMAA) as the monomers, polyethylene glycol diacrylate (PEGDA) as the cross-linker, and lecithin as the lipid lubricant. The blue-light photopolymerization efficiency and the photorheological properties of the hydrogel precursor were investigated by photodifferential scanning calorimetry and a photorheological system. With the increase of DMAA, the photopolymerization efficiency of the precursor improved, while the elasticity of poly(DMAA/AM) decreased accordingly. The physical cross-linking effect between lecithin and the poly(DMAA/AM) network led to improved polymerization properties and elasticity. The lipid-based boundary layer at the hydrogel surface endowed the self-lubrication of the hydrogel filament. The extruded hydrogel filaments exhibited excellent mechanical properties and weavability, which were expected to play a realistic role in soft robots and bioengineering.
研究领域:
材料科学
·
生物医学工程
✓ 已验证
DOI
高影响因子
Advanced Fiber Materials
·
2022
·Vol. 5
·期 2
·588-602
·
IF 12.958
Zhang Chang,Xiao Peng,Zhang Dong,Ni Feng,Gu Jincui,Liu Qingquan,Kuo Shiao-Wei,Chen Tao
Atmospheric moisture exploitation is emerging as a promising alternative to relieve the shortage of freshwater and energy. Efforts to exploit hygroscopic materials featuring flexibility, programmability, and accessibility are crucial to portable and adaptable devices. However, current two-dimensional (2D) or three-dimensional (3D)-based hygroscopic materials are difficult to adapt to diverse irregular surfaces and meet breathability, which severely hinders their wide applications in wearable and programmable devices. Herein, hygroscopic organogel fibers (HOGFs) were designed via a wet-spinning strategy. The achieved fibers were composed of the hydrophilic polymeric network, hygroscopic solvent, and photothermal/antibacterial Ag nanoparticles (AgNPs), enabling hygroscopic capacity, photothermal conversion, and antibacterial. Owing to the good knittable feature, the HOGFs can be readily woven to adjusted 2D textiles to function as an efficient self-sustained solar evaporator of 4-layer woven HOGF device with a saturated moisture capacity of 1.63 kg m −2 and water-releasing rate of 1.46 kg m −2 h −1 . Furthermore, the 2D textile can be applied as a wearable dehumidification device to efficiently remove the evaporative moisture from human skin to maintain a comfortable environment. It can reduce the humidity from 90 to 33.4% within 12.5 min. In addition, the introduction of AgNPs can also endow the HOGFs with antibacterial features, demonstrating significant potential in personal healthcare.
研究领域:
材料科学
·
环境科学
·
生物医学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2023
·Vol. 34
·期 30
·1-10
·
IF 2.8
Wang Sanlong,Wan Jiajia,Tong Huijuan,Yu Yang,Zhang Wenqing,Chen Zhenming,Gui Chengmei,Huang Junjun,Li Honglin
To design and fabricate a novel and low-cost electromagnetic interference shielding material with outstanding performance is becoming extremely popular by scientists over the years, owing to increasingly complex proliferation of electromagnetic waves. In this work, the composite construction that included activation of silver nitrate, electroless copper plating (ECP) and annealing for fabricating weaving structure copper tube was reported to alleviate the problem above. The effect of annealing temperature on its electromagnetic shielding performance was investigated as well. Results manifest the metal particle/ligand structure on weaving cotton surface could promote copper particles to be reduced and deposited on its surface, which can generate weaving copper pipes with face-centered cubic structure spontaneously. The resultant composite, i.e. textured copper tube possessed brilliant shielding effectiveness of 25.2 dB. Interestingly, the electromagnetic shielding performance of annealed ECP cotton was firstly enhanced, and then reduced with the increase of annealing temperature. The 200 °C-annealed ECP cotton exhibited a better shielding effectiveness performance, the values are increased by 38.1% to 34.8 dB, in which the reflection and absorption shielding are increased by 39.9% and 6.7% compared to the one of unannealed sample, corresponding power coefficients of reflection, transmission and absorption were 0.2691, 0.0031, 0.7277, owning to the improvement of Cu tube crystallinity and the introduction of Cu 2 O particles acted as scattering center of electromagnetic waves. Therefore, it would provide a promising future tendency from the viewpoint of abundant resources and sustainable development.
研究领域:
材料科学
·
电磁学
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2022
·Vol. 32
·期 30
·2203666
·
IF 19.924
Jingyu Chen,Yonghui Li,Yongzheng Zhang,Dongdong Ye,Chuxin Lei,Kai Wu,Qiang Fu
The electrokinetic effect allows harvesting renewable energy directly from moisture, sweat, and rainwater, which is one of the promising techniques for self-powered electronics. However, current fibrous hygroelectric nanogenerators still suffer from either an intermittent energy harvesting mode or a limited electricity supply. Herein, learning from the transpiration process in plants, a conductive and hydrophilic cellulose/carbon nanotubes fiber is reported, in which continuous and efficient water flow can be driven by the macromolecular chain channel and spontaneous evaporation. In combination with the electrokinetic mechanism, just a single self-powered fiber is found to produce a constant and tremendous open-circuit voltage of 160.4 mV and a considerable power density up to 0.4 mW cm −3 . This record-high output performance with the feature of continuity and durability is about one order of magnitude higher than that of most conventional fibrous hygroelectric nanogenerators. Eventually, 108 fibers in series or parallel are woven into flexible fabrics, yielding the maximum power supply of 1.2 V with only 10 min charging time, capable of powering an electronic calculator. This work fabricates a knittable and designable self-powering fiber with excellent aesthetics and comfort for practical application, offering a novel concept and an effective approach toward clean energy usage.
研究领域:
材料科学
·
能源技术
·
生物仿生学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry A
·
2020
·Vol. 9
·期 4
·2126-2134
·
IF 11.301
Yingzhen Wu,Na Xing,Sen Li,Leixin Yang,Yanxiong Ren,Yutao Liu,Xu Liang,Zheyuan Guo,Hongjian Wang,Hong Wu,Zhongyi Jiang
Microporous polymer membranes hold great promise in carbon capture. However, engineering a continuous CO2-selective microporous network to achieve ultrahigh gas permeance and desirable selectivity remains a grand challenge. Aiming to manipulate the pore architecture and pore chemistry to implement efficient separation, knitted microporous polymer membranes are fabricated by in situ knitting composite membranes comprised of polyphenylene oxide (PPO) polymer and benzyl alcohol (BnOH). Specifically, the crosslinkers, formaldehyde dimethylacetal, bridge the neighboring aromatic backbones of PPO chains and BnOH to construct a highly crosslinked network with microporosity. By increasing the structural bridge density, the BET surface area of membranes increases from 4 to 538 m2 g−1. The formation of a highly interconnected microporous network provides remarkably increased permeability. Meanwhile, BnOH as a hydroxyl-containing functional building unit is knitted into micropore skeletons, which can directly tune the pore size and improve the CO2-philicity for enhanced selectivity. The resulting membrane displays an ultrahigh permeability of 4651.2 barrer with a CO2/CH4 selectivity of 27, and demonstrated good resistance to plasticization (up to 30 bar) and aging (for 190 days). This knitting strategy enabling versatile combination of building units with different structures and special functionalities may set up an innovative platform for fabricating a broad range of advanced membranes.
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 THE ELECTROCHEMICAL SOCIETY
·
2018
·Vol. 165
·期 7
·A1515
·
IF 3.662
Qifan Liu,Limin Zang,Chao Yang,Chun Wei,Jianhui Qiu,Chanjuan Liu,Xu Xu
A flexible and knittable symmetric all-solid-state fiber supercapacitor (ASSFS) was fabricated by using two polypyrrole (PPy) microcone arrays coated stainless steel yarns (SSY) as fiber electrodes and current collectors. The microcone arrays and interconnected network structure of PPy could increase transport path for ions/electrons and enlarge the real contact area between PPy and electrolyte, leading to superior specific capacitance. In addition, the fiber electrode has a high tensile strength of ∼1200 MPa and elongation at break is 12.5%. The outstanding mechanical performance of the fiber electrode is attributed to the high mechanical properties of the SSY and the protection of PPy coating. The resultant ASSFS exhibits maximum specific capacitance of 42.7 F/cm3, energy density of 3.8 mWh/cm3 and power density of 388 mW/cm3 (normalized to the whole device). The specific capacitance maintains 100% at different bending angles and 93.5% of its initial value after 1000 bending cycles. As a demonstration, a fabric and a bracelet knitted with five ASSFSs connected in series can light a LED.
研究领域:
材料科学
·
能源存储
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Advanced Fiber Materials
·
2021
·Vol. 3
·期 4
·239-250
·
IF 0
Xue Lili,Fan Wei,Yu Yang,Dong Kai,Liu Chengkun,Sun Yanli,Zhang Cong,Chen Weichun,Lei Ruixin,Rong Kai,Wang Qi
Wearable and portable electronic devices based on textile structure have been widely used owing to their wearability and comfortableness. However, yarn fineness and the comfort of the fabric cannot satisfy the requirements of smart wearable devices. This work presents a novel strategy to prepare highly integrated PVDF/conductive nylon core-sheath structure piezoelectric yarns for wearable which is fabricated by combining electrospinning strategy with 2D braiding technology. The fineness of single yarns as well as strength are both improved significantly compared to previous works. The piezoelectric outputs of the yarn are still stable after 800 s fatigue test at a frequency of 4 Hz, and the cycle stability can maintain more than 3200 cycles. Furthermore, the piezoelectric yarns are further woven into piezoelectric plain fabric. According to the electrical performance, the length of the piezoelectric yarn and the thickness of the piezoelectric layer would both affect the output electrical performance. The yarn of the 10 cm in length and 600 μm in fineness can produce an output voltage of 120 mV. Meanwhile, Both the piezoelectric yarn and the fabric could generate piezoelectric output signals through human movement, such as bending, walking. Therefore, the electrical and mechanical performance of the piezoelectric yarns prepared in our work could be improved significantly, and the comfortableness and durability performance of the piezoelectric fabric can satisfy most wearing requirements, which would provide some help in the field of piezoelectric wearable devices based on yarns and fabrics. Graphical Abstract
研究领域:
材料科学
·
纺织工程
·
能源技术
✓ 已验证
产品关联
DOI
JOURNAL OF APPLIED POLYMER SCIENCE
·
2023
·Vol. 140
·期 43
·e54571
·
IF 3
Ching-Wen Lou,Sheng Chu,Peiyao Liu,Xiaomeng Wang,Jia-Horng Lin,Ting-Ting Li
Due to its exceptional mechanical properties, polyurethane (PU) foam has found wide application in various fields. Microcellular foaming not only reduces weight but also enhances the cushioning properties of PU. However, current foaming methods have limitations in improving performance. Therefore, this study aimed to construct spring-like sandwich-structured flexible PU foam composites (SFFCs). These composites were prepared using a two-step foaming method, utilizing a precise amount of polyol and isocyanate as raw materials, at room temperature (28–35°C). In the preparation process, warp-knitted spacer fabrics (WKSFs) with spring-like structures were encapsulated in the middle layer, while the top and bottom layers consisted of PUF (flexible PU foam with different ring radius differences) formed through the foaming process of polyol and isocyanate. The study focused on investigating the influence of the ring radius difference ( r = 1, 1.5, 2) and the two-layer layout (staggered, diagonal, overlapping) of the WKSFs on the compression and cushioning properties. The experimental results revealed a significant improvement in the mechanical properties of the PU with the incorporation of WKSFs. Particularly noteworthy was the excellent cushioning performance exhibited by the two-layer WKSFs sample, RPUS-1, in the dynamic impact test. RPUS-1 absorbed 94.3% of the energy and reduced the impact value to 3921 N, which is 848 N (17.7%) lower than that of PU foam. Furthermore, even after 20 cycles of compression testing, the SFFCs retained excellent compressive properties, with the compressive stress only decreasing from 0.34 to 0.19 MPa. In conclusion, this study expands the application of PU in cushioning, demonstrating their potential in providing improved cushioning properties.
研究领域:
材料科学
·
力学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Journal of Materials Research and Technology-JMR&T
·
2022
·
IF 6.267
Qiushi Wang,Shan Wang,Caiting He,Jie Dong,Xingyu Fan,Runjun Sun
STFs impregnation is an effective method to prepare impact resistance fabrics without sacrificing their flexibility, and the structural features are essential factors affecting the puncture resistance behaviors of these fabrics. Since few studies focus on the quasi-static puncture resistance of 3D woven fabrics and their STFs-based composites, we developed a strategy to evaluate the anti-puncture efficiencies and established models to predict the puncture resistance characteristics of materials. The results show a significant linear relationship between the puncture resistance and layer numbers, and the maximum puncture force and energy dissipation could reach 1284.58 N and 7.22 J for the five-layer angle-interlock fabric after STFs impregnation. Given the inter-yarn slippage restriction by STFs, the maximum puncture force of the fabric with an FVF of 49.47% increases 132.84% after STFs treatment, but the anti-puncture efficiencies of fabrics, whose FVF is higher than 53.4%, drop more than 10% after impregnation. The layer-to-layer interweaving improves fabric's anti-puncture efficiency, but the overlarge binding warp inclination is detrimental to the mechanical usage of yarns and the maintenance of the compact structure.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 33
·e52785
·
IF 3.057
Bingjian Li,Shi Liu,Xixi Xu,Haicun Yang,Yinjie Zhou,Dan Yang,Yun Zhang,Jinchun Li
The continuously reinforced carbon nanotube woven film (CNWF) prepared via the floating catalytic chemical vapor deposition (FCCVD) was modified by mixed acid and vinyltrimethoxysilane (VTMS) respectively to obtain carbon nanotube woven film (CNWF@VTMS) grafted with CH 2 CH group. A series of novel self-supporting composite electrode materials (CNWF@VTMS/PANI) for supercapacitors were then prepared by in-situ chemical oxidative polymerization of aniline in the presence of the CNWF@VTMS film substrate as a conductive network framework. The results showed that CNWF@VTMS/PANI 14 flexible electrode with grape-clustered structure exhibited the highest specific capacitance of 531.3 F/g and the highest energy density of 26.5 Wh/kg at the current density of 1 A/g. It could maintain 75.1% of the initial value at a high current density of 10 A/g. The excellent electrochemical cycle and the structural stability have been confirmed on the condition of the higher capacitance retention of 96.6% after 2000 times of galvanostatic charge/discharge, and the almost unchanged electrochemical performances after 300 times of bending and twisting. Meanwhile, the stronger interfacial bonding between CNWF and PANI endowed a higher tensile strength of 129.2 MPa. In this article, CNWF@VTMS/PANI 14 composite electrode could be a potential application in the field of deformable supercapacitors.
研究领域:
材料科学
·
电化学
✓ 已验证
DOI
高影响因子
Surfaces and Interfaces
·
2024
·
IF 5.7
Hanjiang Li,Zhewen Zhang,Xiaofeng Zhang,Wen Luo,Xueshen Peng,Xinrui Zheng,Jin Huang,Wei Feng
Highly thermal conductive polyimide (PI) composites have shown great potential in electronic equipment and thermal management. However, a high content of heat-conducting fillers is frequently needed, leading to the increased costs and decreased mechanical performance that greatly limit the applications. Herein, we design a carbon woven-mesh nano-template by covalent linkage as filler and obtain in-situ polymerized PI composite films at a low loading content of 1wt%-7wt%. Surprisingly, the specific PI composite films showed significantly improved thermal conductivity with a largest increase of 730% and good mechanical performance for future utilization. The enormous improvement of thermal conductivity is attributed to the efficiently interconnected heat-conducting framework via “covalent bridge”. Moreover, the excellent thermal management capability and cycling stability of the fabricated films was proved by thermal warning display device in Li-ion battery heat managemen tapplication.
研究领域:
材料科学
·
能源技术
✓ 已验证
产品关联
DOI
高影响因子
ELECTROCHIMICA ACTA
·
2014
·
IF 4.086
Zhenxia Zhao,Dan Qin,Sha Wang,Guohua Chen,Zhong Li
A high-rate sulfur/carbon cathode is prepared by using high conductive hierarchical porous carbon-carbon fiber weave-structured (HPC-CF) materials as carbon host to disperse sulfur. Sulfur is infiltrated into porous carbon with meso/micropores by using an improved vapor-melting adsorption method, which aims to enhance sulfur dispersion and interaction with carbon host. Meanwhile, carbon fiber with weaved structure can connect the dispersed micron S/HPC particles on the current collector. As a result, a highly conductive network around the sulfur particles finally forms in the sulfur/carbon cathode. Results show that improved vapour-melting method can efficiently enhance the sulfur dispersion and interaction with carbon host. Electrochemical measurements show that both of the rate capacity and cycle stability of the sulfur/carbon cathode are significantly improved. It delivers a very high initial discharge capacity of 1692.9 mAh g −1 at 0.1 C, and maintains 1030 mAh g −1 after 130 cycles at 0.5 C. Furthermore, the weave-structured HPC-CF carbon materials increases the conductivity effectively, which enhances the rate performance of the prepared S/HPC-CF cathode. It shows 670.8 mAh g −1 at the first cycle and remains 520 mAh g −1 after 200 cycles at 6.0 C with an average coulombic efficiency of 97.8%. The excellent cycle and rate performance of the prepared S v-m /HPC-CF can be attributed to the high cathode conductivity, high sulfur utilization and strong interaction between sulfur and the HPC-CF materials.
研究领域:
材料科学
·
电化学
✓ 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）