CHEMISTRY OF MATERIALS
·
2016
·
IF 9.407
Zhen Xu,Li Peng,Yingjun Liu,Zheng Liu,Haiyan Sun,Weiwei Gao,Chao Gao
Graphene macroscopic materials have attracted tremendous attention for their fascinating performance and rich functionalities. Here, we provide an elaborate description of techniques in the fabrication of graphene macroscopic materials, focusing on the wet-spinning of 1D fibers and wet-spinning of continuous 2D films and 3D ultraflyweight aerogels. The thread of the research concepts is discussed to offer an overview of graphene macroscopic assembly. We summarize the fabrication system of wet-spinning of fiber and films, which extends to the chemistry of solvated graphene, the formation of graphene LCs, and the chemical/thermal reduction of graphene materials. The experimental details of graphene ultraflyweight aerogel are also been described. We hope that this paper can act as an experimental guidance for researchers, and become suggestive for forthcoming advances in graphene macroscopic materials.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
高影响因子
MATERIALS SCIENCE FORUM
·
2022
·
IF 0
Jin Yang Zhang,Jin Ling Li,Qian Qiao,Rui Wang,Fei Liu,Hai Ning Na,Jin Zhu
In this paper, cellulose solution was obtained by dissolving cellulose in CO2 switchable solvent, and the CNF spinning solution was prepared by mixing cellulose solution with cellulose nanofibrils (CNF) by physical blending. CNF reinforced all-cellulose composite fibers were prepared by wet-spinning. The spinning solution with good dispersion of CNF can be obtained. The rheological property test showed that the solution has spinnability. The composite fibers were subsequently prepared by wet-spinning. The structure and properties of the composite fibers were analyzed by FT-IR, XRD, SEM, TGA, and mechanical properties testing. The results showed that the chemical structure of the composite fiber was the same as that of cellulose, but the aggregate structure became amorphous, which resulted in deceased thermal stability. The composite fibers had dense and solid structure without any cavity. The mechanical strength of the composite fiber was upto 1.12cN/dtex.
研究领域:
材料科学
·
化学工程
✓ 已验证
DOI
Polymers
·
2024
·Vol. 16
·期 13
·1824
·
IF 4.7
Zirong Luo,Na Kong,Ken Aldren S. Usman,Jinlong Tao,Peter A. Lynch,Joselito M. Razal,Jizhen Zhang
Wearable electronic sensors have recently attracted tremendous attention in applications such as personal health monitoring, human movement detection, and sensory skins as they offer a promising alternative to counterparts made from traditional metallic conductors and bulky metallic conductors. However, the real-world use of most wearable sensors is often hindered by their limited stretchability and sensitivity, and ultimately, their difficulty to integrate into textiles. To overcome these limitations, wearable sensors can incorporate flexible conductive fibers as electrically active components. In this study, we adopt a scalable wet-spinning approach to directly produce flexible and conductive fibers from aqueous mixtures of Ti3C2TxMXene and natural rubber (NR). The electrical conductivity and stretchability of these fibers were tuned by varying their MXene loading, enabling knittability into textiles for wearable sensors. As individual filaments, these MXene/NR fibers exhibit suitable conductivity dependence on strain variations, making them ideal for motivating sensors. Meanwhile, textiles from knitted MXene/NR fibers demonstrate great stability as capacitive touch sensors. Collectively, we believe that these elastic and conductive MXene/NR-based fibers and textiles are promising candidates for wearable sensors and smart textiles.
研究领域:
材料科学
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电子工程
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纺织科学
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2018
·Vol. 5
·期 2
·025102
·
IF 1.151
Hongwei Lu,Liming Zou,Yongjing Xu,Hong Sun,Yan Vivian Li
A simple method of using wet spinning was found effective in the preparation of photoluminescent poly vinyl alcohol (PVA)/hyperbranched polylysine (HBPL) fibers. The photoluminescence of the PVA/HBPL fibers was significantly uniform and the unique uniformity was obtained by controlling the mass ratio of PVA to HBPL in aqueous solutions used in the wet spinning process. The high solubility of HBPL in water make it feasible to well control in the mass ratio of PVA to HBPL, which facilitated the formation of a unique PVA/HBPL mixture, resulting in the fabrication of homogeneous PVA composite fluorescence fibers. The composite fibers exhibit good mechanical, and thermal properties that make the PVA/HBPL fluorescent fibers a great material potentially used in fluorescence applications including optics, imaging and detection.
研究领域:
材料科学
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光学
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生物医学工程
✓ 已验证
DOI
高影响因子
Nature Communications
·
2014
·Vol. 5
·期 1
·1-10
·
IF 10.742
Kou Liang,Huang Tieqi,Zheng Bingna,Han Yi,Zhao Xiaoli,Gopalsamy Karthikeyan,Sun Haiyan,Gao Chao
Yarn supercapacitors have great potential in future portable and wearable electronics because of their tiny volume, flexibility and weavability. However, low-energy density limits their development in the area of wearable high-energy density devices. How to enhance their energy densities while retaining their high-power densities is a critical challenge for yarn supercapacitor development. Here we propose a coaxial wet-spinning assembly approach to continuously spin polyelectrolyte-wrapped graphene/carbon nanotube core-sheath fibres, which are used directly as safe electrodes to assembly two-ply yarn supercapacitors. The yarn supercapacitors using liquid and solid electrolytes show ultra-high capacitances of 269 and 177 mF cm −2 and energy densities of 5.91 and 3.84 μWh cm −2 , respectively. A cloth supercapacitor superior to commercial capacitor is further interwoven from two individual 40-cm-long coaxial fibres. The combination of scalable coaxial wet-spinning technology and excellent performance of yarn supercapacitors paves the way to wearable and safe electronics.
研究领域:
材料科学
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能源技术
·
纺织工程
✓ 已验证
DOI
高影响因子
ACS Applied Polymer Materials
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2022
·
IF 4.855
Hongrui Sun,Wenxuan Mu,Xihua Cui,Zhiguang Xu,Tao Zhang,Yan Zhao
Polymer-encapsulated aerogel fibers with high porosity, low density, and good mechanical properties are promising candidates for thermal insulation materials. However, the fabrication of polymer-encapsulated aerogel fibers needs complex processes, which hinders continuous and large-scale fabrication. Herein, we developed a simple yet efficient strategy to continuously fabricate polymer-encapsulated aerogel fibers through coaxial wet spinning followed by conventional freeze drying. The coaxial wet-spinning step features stepwise coagulations containing an inner aerogel precursor as the first coagulation bath and a subsequent water bath as the second coagulation bath. The morphology of polymer-encapsulated aerogel fibers exhibits a porous aerogel network structure of the core layer and porous sheath layer. Thus, the as-prepared aerogel fiber, with cellulose acetate/poly(acrylic acid) (CA/PAA) as the sheath layer and a cellulose nanofiber (CNF) aerogel as the core, possesses low sheath layer density (0.25 g cm–3) and high aerogel core porosity (99.34%). Due to the good mechanical properties of the CA/PAA sheath, the CA/PAA@CNF aerogel fiber shows a high tensile strength of 5.83 MPa. Moreover, the CA/PAA@CNF aerogel fiber exhibits an excellent thermal insulation performance (0.054 W m–1 K–1) ascribed to the multistage porous structure of the fiber, which can significantly reduce heat convection and heat transfer. The good mechanical properties and excellent thermal insulation performance endow the polymer-encapsulated aerogel fibers with promising application in the field of personal thermal management.
研究领域:
材料科学
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纺织工程
·
热能工程
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part B-Physics
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2023
·
IF 1.4
Zheng Guo,Hao Wang,Jin Zheng,Juan Wu,Chengzhi Huang,Heng Liu,Mingli Jiao
Thermoplastic high-ortho phenolic resins (HOP-PRs) were blended with thermosetting high-ortho phenolic resins (HOT-PRs), and the resulting blended modified phenolic as-spun fibers (AFs) were obtained through wet spinning. The blended modified phenolic fibers (o-BPFs) were prepared using various curing methods, including solution thermal curing (STC) and microwave thermal curing (MTC). The characterization was performed using such techniques as infrared spectroscopy, nuclear magnetic resonance (NMR), thermogravimetric analysis (TGA), fibers strength testing, and scanning electron microscopy. The results showed that the blend modification by introducing HOP-PRs improved the spinnability of the fibers. With the assistance of microwaves, +CH2OH also reacted more fully with the phenolic rings inside the fibers, while the cross-linking degree of the fibers was also improved by heat treatment. Therefore, the MTC fibers showed the best mechanical properties with an elongation of 3.3% and a tensile strength of 124.4 MPa.
研究领域:
材料科学
·
高分子科学
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化学工程
·
纺织工程
✓ 已验证
DOI
高影响因子
CARBON
·
2022
·
IF 11.307
Xu Zhao,Jizhen Zhang,Ke Lv,Na Kong,Yanqiu Shao,Jinlong Tao
Mechanically strong and electrically conducting fibers, particularly those with high specific capacitances, are promising fiber-shaped electrodes for fiber- and textile-based energy storage devices like fiber-shaped supercapacitors (FSCs). However, a high loading of fillers or bridging agents is commonly required to fabricate fiber electrodes with good mechanical strength , which compromises electrical conductivity and energy storage performance. Herein, an easily scalable wet-spinning strategy is reported to fabricate multifunctional Ti 3 C 2 T x MXene/carbon nanotubes (MXene/CNT) hybrid fibers from a harmonious mixture of MXene and CNT in water and using acetic acid as a coagulation bath . The hybrid fiber achieved high strength (61 ± 7 MPa), good conductivity (1142.08 ± 40.04 S cm −1 ) and excellent energy storage performance (∼295 F g −1 at 5 mV s −1 ) at a very low CNT content of ∼1 wt%. When CNT loading increased to ∼9 wt%, the maximum strain at broken reached 161 ± 19 MPa and conductivity further increased to 1715 ± 22 S cm −1 . The excellent mechanical performance allows hybrid fibers to be knitted into textiles for energy storage textiles. The assembled FSCs exhibit energy and power densities of ∼6.08 mW h cm −3 and ∼6440 mW cm −3 , respectively. The excellent performance of MXene/CNT fiber and good feasibility for scalable production will open up new opportunities for the development of wearable and textile-based devices in the near future.
研究领域:
材料科学
·
纳米科技
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能源存储
·
纺织电子学
·
高分子物理
✓ 已验证
DOI
高影响因子
Journal of Renewable Materials
·
2022
·
IF 2.115
Jianjun Guo,Lingling Jia,Sandra Senyo Fometu,Qiang Ma,Jinjin Wang,Hang Li,Lei Jiang,Guohua Wu
Traditionally, silkworm silk has been used to make high-quality textiles. Nevertheless, various wastes from silkworm silk textiles that are no longer used are increasing, which is also causing considerable waste and contamination. This issue is causing widespread concern in countries that use more silk. Regenerated silk fibroin (RSF) fibers have been shown to be fragile and tender, which prohibits RSF from being widely used as a structural component. Therefore, enriching the function of silk and enhancing the RSF mechanical properties are important directions to expand the comprehensive utilization of silk products. In the present research, wet spinning was used to create a series of RSF/tungsten disulfide (WS 2 ) nanoparticles (NPs) hybrid fiber having distinct WS 2 nanoparticles concentrations. It was discovered that the temperature of hybrid fibers containing 0.8 wt% RSF/WS 2 nanoparticles might climb from 20.4°C to 85.6°C in 1 min and 108.3°C in 10 min after being exposed to simulated sunlight for a period of one minute and ten minutes. It also had certain antibacterial activity and thermal stability. Fabrics created by hand mixing had outstanding photothermal characteristics under natural sunlight. Furthermore, adding WS 2 nanoparticles might increase the tensile properties of hybrid fibers, which could be caused by the reality that the blending of WS 2 nanoparticles inhibited the self-assembly of β-sheets in RSF reaction mixture in a dosage-dependent way, as evidenced by the fact that RSF/WS 2 nanoparticles hybrid fibers had lesser β-sheets material, crystalline nature, and crystalline size. The above performance makes the RSF/WS 2 nanoparticles hybrid fibers promising candidates for application in photothermal fabrics as well as military clothing.
研究领域:
材料科学
·
纺织工程
·
高分子物理
·
纳米复合材料
·
光热转换
✓ 已验证
DOI
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2017
·Vol. 27
·期 34
·1701061
·
IF 12.124
Wenxin Cao,Lei Yang,Xiaodong Qi,Ying Hou,Jiaqi Zhu,Ming Yang
Coaxial fibers are the key elements in many optical, electrical, and biomedical applications. Recent success in materials synthesis has provided versatile choices for the core part, but the search of high-performance sheath materials remains much less productive. These surface coatings are however as important as the core for their role as protection layers and interaction medium with the externals, thereby critically affecting the real performance of coaxial fibers. Here it is shown that aramid nanofibers (ANFs) with exceptional environmental stability and mechanical properties can be advanced coating materials for both wet- and dry-spun carbon nanotube (CNT) wires. Co-wet-spinning ANFs with CNT aqueous dispersion can produce coaxial fibers with a compact sheath comprised of aligned ANFs, showing much enhanced mechanical properties by transferring stress to the sheath without sacrificing the conductivity. On the other hand, an immersion-precipitation process is used to prepare a porous sheath made from randomly distributed nanofibers on dry-spun CNT wires, which can be combined with ionic conductive gel electrolyte as a strong packaging layer for flexible solid-state supercapacitors. The excellent intrinsic characteristics as well as variable ways of structural organizations make ANF-based coatings an attractive tool for the design of multifunctional high-performance hybrid materials.
研究领域:
材料科学
·
纳米科技
·
高分子科学
·
能源存储
·
生物医学工程
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）