RSC Advances
·
2021
·Vol. 11
·期 55
·34955-34962
·
IF 3.361
Yue Wu,Cheng Wang,Zewen Yang,Depeng Song,Takeo Ohsaka,Futoshi Matsumoto,Xiaolin Sun,Jianfei Wu
In modern society, flexible rechargeable batteries have become a burgeoning apodictic choice for wearable devices. Conventional lithium–sulfur batteries lack sufficient flexibility because their electrode materials are too rigid to bend. Along with the inherent high theoretical capacity of sulfur, lithium–sulfur batteries have some issues, such as dissolution and shuttle effect of polysulfides, which restricts their efficiency and practicability. Here, a flexible and “dead-weight”-free lithium–sulfur battery substrate with a three-dimensional structure was prepared by a simple strategy. With the cooperative assistance of carbon nanotubes and graphene attached to cotton fibers, the lithium–sulfur battery with 2.0 mg cm−2 sulfur provided a high initial discharge capacity of 1098.7 mA h g−1 at 1C, and the decay rate after 300 cycles was only 0.046% per cycle. The initial discharge capacity at 2C was 872.4 mA h g−1 and the capacity was maintained 734.4 mA h g−1 after 200 cycles with only a 0.079% per cycle decay rate.
研究领域:
材料科学
·
能源技术
✓ 已验证
DOI
高影响因子
Nanoscale
·
2022
·Vol. 14
·期 15
·5840-5850
·
IF 8.307
Zheng Xiong,Jian Huang,Yongzhong Wu,Xiao Gong
The limited robustness and complex preparation process greatly hinder the large-scale use of superhydrophobic surfaces in real life. In this work, we adopt a simple method to prepare robust fluorine-free superhydrophobic cotton fabrics by a facile dip-coating method based on silica microparticles and titanium dioxide nanoparticles. Microparticles and nanoparticles are used to build a suitable rough hierarchical structure, while strong bonds are formed between fabric and particles by a silane coupling agent. The cross-linking reaction between the isocyanate group of trimers of hexamethylene diisocyanate (HDI) and the hydroxyl group of each component in the condensation reaction further increases the bonding between the coating and the cotton fabric. In addition, polydimethylsiloxane (PDMS) is used as a low-surface-energy material to modify the fabric surface. The resulting coating shows excellent superhydrophobic properties with a water contact angle of 161.7°. Meanwhile, the prepared superhydrophobic fabric exhibits excellent durability and stability after sandpaper wearing, washing, and UV radiation, as well as treatment with various organic solutions, boiling water and different pH solutions. Moreover, the superhydrophobic fabric displays excellent UV protection performance and high oil–water separation efficiency (>99% after 30 cycles) with ultrahigh flux up to 20 850 L m−2 h−1.
研究领域:
材料科学
·
环境工程
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DOI
高影响因子
ACS Applied Polymer Materials
·
2022
·
IF 4.855
Zhen Li,Xuan Chen,Xin Chen,Jianqiang Guo,Lin Liu,Guocheng Zhu,Jiri Militky,Juming Yao
Flexible, wearable pressure sensors have been widely studied in the fields of motion detection, health management, and human–computer interaction. However, the unsatisfactory stability and durability limit its application, due to the weak interface interaction between the flexible substrate and conductive layer. Herein, we design a wearable pressure sensor with good sensitivity and stability by integrating a conductive cellulose/exfoliated graphene (CEG) ink with polyethylenimine-modified cotton fabrics (PEI-CFs). The negatively charged graphene was obtained via liquid-phase exfoliation of graphite in a sustainable cellulose solution. The pressure sensor was prepared by an electrostatic self-assembly process in which negatively charged CEG is adsorbed to the positively charged PEI-CFs. In this strategy, CEG ink combines firmly with the PEI-CF substrate, endowing the as-prepared pressure sensor with stable sensing performance and long-term stability. Due to these advantages, it can be used for human health monitoring, such as human motion, breathing, and microexpression. This work provides a simple and feasible route for the development of stable, durable, and high-performance wearable electronics.
研究领域:
材料科学
·
电子工程
·
生物医学工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2022
·Vol. 139
·期 44
·e53070
·
IF 3.057
Yuanyu Ge,Zhenming Qi,Desheng Sha,Xiaosai Hu,Shiwen Liu
Intumescent flame retardant (IFR) is the new generation of environmentally friendly flame retardant. The improved water solubility of IFR enhances its application in cellulose-based textiles. A water-soluble carbon–nitrogen–phosphorus (C–N–P) ternary IFR (PTETP) was synthesized using cyanuric chloride (TCT), ethylene glycol (EG), and O-phosphoethanolamine (O-PEA) as starting materials. The burning performance of untreated and PTETP treated cotton fabrics was evaluated using vertical flammability test (VFT), limiting oxygen index (LOI), and cone calorimetry. The results indicate that with the increase of PTETP content, the flame retardant performance of cotton fabrics is gradually enhanced. The cotton fabric treated with 10 wt% PTETP shows no afterflame combustion, has a char length of 98 mm, and a LOI of 30.8%. Compared with pristine cotton fabric, the peak heat release rate (PHRR) and total heat release (THR) of the treated cotton fabric were reduced by 52.6% and 28.2%, respectively. Thermogravimetric (TG) shows that PTETP effectively improves the thermal stability and reduces the thermal decomposition temperature of cotton fabric, and even can increases the residual carbon rate by 20%. In addition, the employment of PTETP shows no harm on the tensile strength of cotton fabrics. After washing 20 times, LOI of flame-retardant cotton fabric still remained almost 26%.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2017
·
IF 4.811
Ying Pan,Wei Wang,Longxiang Liu,Hua Ge,Lei Song,Yuan Hu
Bio-based and phosphorus-free coating was fabricated by layer-by-layer assembly method to obtain the flame retardant cotton fabric. For the first time, the modified cotton fabrics were prepared by utilizing positively charged polyethylenimine and negatively charged alginate together with subsequent crosslinking of barium, nickel and cobalt ions. Scanning electron microscopy and energy-dispersive X-ray demonstrated that the metal ions crosslinked coating was successfully constructed on the substrate. The thermal stability and flame retardancy were investigated by thermogravimetric analysis (TGA) and horizontal flame tests. TGA results showed that the degradation of the coated cotton fabrics were retarded at high temperature and the char residue of the cotton fabrics were improved after covered with the barium, nickel and cobalt ions crosslinked coatings. Furthermore, the fire resistance of cotton-Ba sample was enhanced significantly compared with the untreated sample, as evidenced by the obvious reduction (28%) of flame spread rate and complete char residue. Finally, the washing durability of coating on the fabric was enhanced after metal ions crosslinked with alginate based coating.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
FIBERS AND POLYMERS
·
2021
·Vol. 22
·期 4
·936-941
·
IF 2.153
Chen Xin,Guo Junkang,Ren Limei,Ren Shenyong,Shen Baojian,Guo Qiaoxia
The flame-retardant finishing of cotton with pentaerythritol phosphate and small molecule organic amine, such as diethylenetriamine, triethylenetetramine, diethanolamine, or isopropanolamine, was studied. The mechanical and flame-retardant properties and thermal stability of cotton fabric before and after flame-retardant finishing were investigated. Results revealed that the longitudinal and latitudinal breaking strength increased. The limiting oxygen index increased from 18.7 % to 37.9–39.1 %. Vertical flame burning time and afterglow time decreased from 35.1 and 8.4 s, respectively, to 0 s. The damage length decreased from 30 cm to 7.1–8.4 cm. At 700 °C, the residual carbon increased from 17.69 % to 41.48–41.56 %. The experimental results show that the flame-retardant system has good flame retardant and carbonization effects on cotton and good foaming property for combustion. The experimental operation is simple, rapid, and has broad market prospects.
研究领域:
材料科学
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纺织工程
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2015
·Vol. 132
·期 40
·
IF 1.768
Huan-Ling Wu,Xiao-Xiao Hou,Christopher Branford-White,Xiao-Zhu Sun,Lei Tao,Syeda Um-I-Zahra,Li-Min Zhu
Calcium carbonate (CaCO 3 )/alginate inorganic–organic hybrid particles were synthesized and deposited on to the surface of cotton fabrics with a novel one-step procedure. The effects of the Ca 2+ /CO 3 2− /alginate molar ratio on the cotton matrix were investigated. The optimization of the process resulted in a regular shaped hybrid microparticles, and scanning electron microscopy revealed that the particles were uniformly distributed on the surface of the fibers. Dynamic light scattering showed that the particles were about 2 μm in diameter. Moreover, transmission electron microscopy images demonstrated that the core–shell structure of the particles existed along with CaCO 3 evenly enfolded into the alginate layer. An X-ray diffraction pattern displayed that the alginate/CaCO 3 hybrid microparticles were a mixture of calcite and vaterite crystal. Fourier transform infrared spectroscopy indicated that CaCO 3 /alginate hybrid particles formed in situ were the only deposited materials. The thermogravimetric analysis curve indicated a certain mass ratio of the alginate and CaCO 3 in the hybrid particles. Furthermore, the drug-loading and drug-release properties of the hybrid microspheres were studied, and the results show that the water-soluble diclofenac sodium could be effectively loaded in the hybrid microparticles and the drug release could be effectively sustained. Finally, both of the microparticles and modified fabrics had good cytocompatibility. © 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015 , 132 , 42618.
研究领域:
材料科学
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生物医学工程
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纺织科学
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2019
·Vol. 26
·期 12
·7569-7579
·
IF 3.917
Sadi Md. Shak,Pan Junjie,Xu Anchang,Cheng Deshan,Cai Guangming,Wang Xin
Simple and facile fabrication techniques to load conductive components onto textiles for wearable applications are highly demanded. In this work, highly conductive cotton fabrics were fabricated by dip-coating of single-walled carbon nanotubes (CNTs) after polydopamine (PDA) templating. The coated fabrics were characterized by scanning electron microscopy, X-ray photoelectron spectroscopy and energy dispersive X-ray spectrum. The introduction of PDA enhanced the adhesion between fiber surface and the loaded CNTs, resulting in a conductivity of 41.5 Ω/sq for the coated fabrics. The CNT-PDA-cotton fabric showed great durability against repeated mechanical deformation (bending, folding) or multiple washing cycles. The excellent strain sensing performance of the coated fabrics granted them the application potential in real-time monitoring of different human motions such as speaking, drinking, walking, bending of finger and knee etc. Furthermore, the composite fabrics showed outstanding electric heating performance with a rise in the surface temperature to about 120 °C within 20 s at 6 V. The fabrication of CNT-PDA-cotton composite fabrics provides a novel and simple way of developing textile-based wearable electronics and heaters.
研究领域:
材料科学
·
纺织工程
·
电子工程
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2023
·Vol. 30
·期 12
·1-14
·
IF 2.8
Du Yonggang,Zhu Yongfei,Li Yuxuan,Xiao Jianrui,Wang Zhi
To develop a durable superhydrophobic cotton fabric (CF) for effectively separating oil/water mixtures, a pyrogallol-based polybenzoxazine with abundant hydroxyl groups (PPG-D) and Fe 3 O 4 were adopted to decorate CF. Meanwhile, a commercial benzoxazine based on bisphenol A and aniline (BA-a) was also incorporated to enhance the application potential of superhydrophobic CF. As expected, a durable superhydrophobic cotton fabric (PPG-D@PBA-a@Fe 3 O 4 @CF) with a water contact angle (WCA) of 154° was successfully fabricated via a facile dip-coating method. PPG-D@PBA-a@Fe 3 O 4 @CF not only could effectively separate immiscible oil–water mixtures with a high permeation flux of up to 12207 L/m 2 h and separation efficiency of above 98.8%, but also displayed a satisfactory separation ability for surfactant-stabilized water-in-oil emulsions with a separation efficiency of over 99.8% and high flux in the range of 4971–8281 L/m 2 h, and the modified CF remained a superior separation efficiency and flux even after 20 separation cycles. In addition, PPG-D@PBA-a@Fe 3 O 4 @CF also displayed outstanding mechanical and chemical stability as well as excellent self-cleaning ability, and the WCA of modified CF could reach 148° even after 100 abrasion cycles. These excellent characteristics make PPG-D@PBA-a@Fe 3 O 4 @CF have a promising application in oil–water separation.
研究领域:
材料科学
·
环境科学
✓ 已验证
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2015
·
IF 3.163
Xinhang Li,Huiyu Chen,Wentao Wang,Yaqing Liu,Peihua Zhao
A novel formaldehyde-free phosphorus–nitrogen flame retardant with multiple reactive groups, dioxo (3-triethylphosphite-5-chlorine−1−triazine) neopentyl glycol (DTCTNG), has been synthesized and was applied to cotton fabrics. The molecular structure of DTCTNG was characterized by FTIR , 1 H NMR , and 31 P NMR. The thermal degradation property of DTCTNG was assessed by thermogravimetric analysis (TGA), which revealed that it has good thermal stability on the high temperature condition. To achieve a covalent bond between DTCTNG and fiber matrix, the finishing conditions of cotton fabrics with different add-on's DTCTNG were investigated by using TGA, vertical flammability test, limiting oxygen index (LOI) and scanning electron microscope test (SEM). The water resistance of the treated cotton fabrics under optimal finishing condition was studied by LOI test. Furthermore, the mechanism of cross-linking reaction between DTCTNG and cotton fiber was discussed by attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR). All the results showed that cotton fabrics treated with DTCTNG has good flame retardancy and steady water resistance.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2016
·Vol. 24
·期 2
·1077-1085
·
IF 3.195
Wang Lili,Wang Xiancheng,Shen Yifeng
A series of modified guar gums with s -triazine group (TSG) was successfully prepared using monochlorotriazine sulfanilic acid as modifier under certain conditions. The flowability, viscoelasticity, and thixotropy of TSG solutions were thoroughly studied through steady shear, dynamic strain sweep, and structural recovery tests. The results indicated that TSG exhibited better flowability, more viscous effects, and higher viscosity recoverability compared with guar gum (GG). The flow and viscous characteristics of TSG increased with increasing degree of modification. As thickeners in reactive printing of cotton, the paste add-on, color yield, and penetration of TSG were 54–80, 15–60, and 31–48% higher, respectively, compared with GG. TSG could obtain desirable large patterns with bright and even color as well as fine patterns with good outline sharpness, especially 0.4–1.0TSG. TSG has great potential as a substitute for sodium alginate in reactive printing of cotton.
研究领域:
材料科学
·
纺织工程
·
应用化学
✓ 已验证
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2011
·Vol. 122
·期 3
·2090-2098
·
IF 1.24
Chenghui Zheng,Guoqiang Chen,Zhenming QI
Nano titanium dioxide (TiO 2 ) sols were prepared by sol-gel method with tetrabutyl orthotitanate (TBOT) as precursors, citric acid (CA) as inhibitors. Ultraviolet resistant capacity of finished cotton fabrics are greatly improved with good wrinkle-resistance, whiteness and tensile strength as well. The optimum molar ratio for preparing nano-TiO 2 sols in this study is n[C 2 H 5 OH] : n[H 2 O] : n[CA] : n[HCl] : n[TOBT] = 20 : 6 : 1.2 : 0.025 : 1, at ambient temperature. Particle size distribution analysis of the sol reveals that the curve is right tailed with an average diameter of 72.8 nm. Factors affecting the performance of finished cotton fabrics by TiO 2 sols, such as concentration of sodium hypophosphite (SHP), triethanolamine (TEA) in finishing bath, curing temperatures and time lengths were investigated by orthogonal experiments. The optimum finishing results can be obtained with 3% SHP, 3% TEA, curing at 165°C for 3 min. Aggregated nano-TiO 2 particles on surfaces of finished cotton fibers both washed and unwashed were investigated by high resolution cold field emission scanning electron microscope and energy dispersive X-ray spectrometer. Esterification crosslinking between CA and cotton fibers were also demonstrated through infrared spectra. After a five-time's wash, ultraviolet protection factor of finished cotton fabrics with nano-TiO 2 sols is up to 117.42 and dry crease recovery angles increase by 30.2° with slightly improved whiteness, while the breaking strength decreases by 18.8%. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011
研究领域:
纺织科学
·
材料科学
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）