JOURNAL OF THE TEXTILE INSTITUTE
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2025
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IF 1.5
Jiahua Gu,Yi Lu,Shiyi Liu,Xiantao Zhang,Yinsong Hu,Yingjun Gao,Jian Wang,Feichao Zhu,Zhuanyong Zou,Yinjiang Zhang
Although numerous studies have been reported on the hydrophobic finishing of textile materials using polysiloxanes, research on the underlying coating finishing processes and mechanisms remains limited. Additionally, most approaches rely on nano-particles or plasma etching to increase surface roughness, often neglecting the inherent rough structure of textile materials. In this study, Box-Behnken design response surface methodology (BBD-RSM) was employed to design the experimental scheme and construct mathematical equations based on the experimental results. Then, the interaction effects of process parameters, including polydimethylsiloxane (PDMS) concentration, heat treatment temperature, and time, on hydrophobicity and mechanical properties of spunlace nonwoven materials were predicted and analyzed. When either PDMS concentration or treatment temperature is fixed, the contact angle (CA) of the material initially increases and then decreases with time. The optimal CA is observed after 8 h of heat treatment. The breaking strength of the material decreases gradually with increasing temperature. However, at a certain temperature, it initially increases and then decreases with increasing PDMS concentration, reaching a maximum at about 2 wt%. The elongation at break of the material exhibits better with high PDMS concentration and low treatment temperature or time, as well as with low PDMS concentration and higher treatment temperature or duration. Furthermore, the microscopic morphology and CA of materials modified were examined with different PDMS concentrations, combining wetting theories to further explore the hydrophobic effects of fiber assemblies. The high CA of PDMS-modified fiber assemblies is mainly attributed to the combined effects of PDMS, the inherent roughness of fibers, and the fiber assemblies.
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DOI
高影响因子
FIBERS AND POLYMERS
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2025
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IF 2.3
Pan Xianmiao,Wang Hongjie,Wang Jiani,Wang He,Shi Hu,Wang Shubo,Ruan Fangtao,Feng Quan
Thermoplastic polyurethane (TPU) electrospun membrane is an ideal substrate material, especially in waterproof breathable membranes due to its superior mechanical properties and flexibility. Herein, we fabricate a TPU-based composite membrane by decorating ground polyacrylonitrile (PAN)-derived carbon nanofibers (CNFs) through ultrasonication followed by a dip-coating of polydimethylsiloxane (PDMS). The decorated CNFs can build up roughness on the membrane, and the coated PDMS layer can protect the CNFs from detaching from the membrane and increase the mechanical properties of the composite membrane. The obtained TPU/CNFs/PDMS membrane displays excellent waterproof and breathable ability. Specifically, the air permeability of the composite membrane is 7.38 mm/s, and the moisture permeability amounted to 5610 g/m 2 /day. Besides, the TPU/CNFs/PDMS membrane exhibited an outstanding tensile strength of 19.407 MPa, elongating at a break of 155.76%. This novel TPU-based composite membrane exhibits great application potential in functional fabric, especially for personal protective fabrics.
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高影响因子
FUEL
·
2025
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IF 7.5
Liang Chu,Zhaokun Wang,Zhaohui Liu,Teng Zhao,Liyan Wang,Mu Yang,Ge Wang
Host-guest catalysts are promising for tailored applications but require innovative synthesis strategies. Herein, we report the first ambient aqueous-phase synthesis of bimetallic Ce/Zr MOF-801, followed by acid post-treatment. Utilizing defect engineering, Ce species are preferentially exposed within the robust Zr-MOF-801 substrate. This structural modification substantially enhances the host–guest catalyst’s oxidative desulfurization (ODS) performance. We systematically investigate synthesis parameters, spatiotemporal yield, and defect characterization, and refines catalytic conditions. Post-acid-treated Ce/Zr-MOF-801-H displays augmented external surface area (189 m 2 g −1 ), and exposed acidic sites while upholding the outstanding intrinsic stability of the Zr-MOF-801 substrate. Under optimal conditions (60 °C, 6 min), Ce/Zr-MOF-801-H completely eliminates dibenzothiophene (1000 ppm S), with a turnover frequency of 39.3 h −1 and catalytic activity of 53.2 mmol g −1 h −1 , far surpassing Zr-UiO-66-H. It maintains a desulfurization rate of 96.6% after five cycles. FTIR spectroscopy, quenching experiments, and ESR spectroscopy reveal that the exposed Ce sites serve dual roles: (1) activating the substrate by reducing the electron density of sulfur atoms and (2) facilitating H 2 O 2 into hydroxyl and superoxide radicals, driving ODS. This strategy not only advances industrial ODS applications but also sheds light on the synthesis of MOF-based host–guest catalysts.
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高影响因子
COMBUSTION AND FLAME
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2025
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IF 6.2
Guibiao He,Jian Li,Zichun Yu,Saichao Song,Jie Zhong,Yaning Li,Boliang Wang
The detonation characteristics of vapor-liquid two-phase fuel/air aerosol are an essential subject in fuel utilization and vapor explosion prevention. In this study, the effects of isopropyl nitrate (iPN) addition on the detonation initiation characteristics of vapor-liquid two-phase n-heptane (HP)/air aerosol were investigated in a detonation tube. The aerosol was generated by injecting liquid HP/iPN mixture into the test section through 12 sets of dispersion systems. Hydrogen-oxygen pre-detonation served as the initiation source. Chemical reaction kinetics simulation was performed to elucidate the underlying reaction mechanism of iPN/HP mixtures. Experimental results demonstrated that the detonation wave velocity of HP/(iPN)/air aerosol ranged from 1480 to 1820 m/s and the detonation pressure varied from 2.6 to 5.2 MPa, whereas iPN/air aerosol exhibited lower velocity (1260 to 1450 m/s) and comparable detonation pressure (3.2 to 5.3 MPa). iPN addition significantly enhanced the detonation initiation sensitivity of HP/air aerosol and reduced the minimum detonable concentration. This promoting effect intensified with increasing iPN content, though excessive iPN content considerably weakened the detonation intensity. Numerical analysis revealed that iPN facilitated detonation initiation by generating reactive radicals (H, CH 3 , OH, and O) during the early stage of the ignition induction period, accelerating the establishment of a radical pool for HP reaction and thereby reducing the reaction induction period of HP. Furthermore, iPN addition introduced new consumption pathways for HP and increased the pathways converting intermediate products into the final product CO 2 . These findings provide valuable insights for fuel formulation optimization and industrial safety management.
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高影响因子
FUEL
·
2025
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IF 7.5
Yuhang Yang,Jiahao Wang,Run Hong,Bingbing Qiu,Huaqiang Chu
As a potential e-fuel, polyoxymethylene dimethyl ether (PODEn) not only has the potential to reduce carbon dioxide, but its properties, similar to diesel, also determine its broad application prospects as a fuel additive. So as to study the effects of the unique long-chain structure and high oxygen content of PODEn on soot formation, n -heptane was employed as a diesel alternative fuel in this research. Methyl butyrate (MB), which is chosen as the comparative oxygenated fuel, has the same carbon chain length as PODE3. With the aim of comparing the effects of different oxygenated functional groups in long-chain oxygenated fuels and analyzing the advantages and disadvantages of PODE3 as a fuel additive, two lines of thought were taken. The blending ratio of long-chain oxygenated fuels and total oxygen content in the fuel mixture were fixed. In this work, the high-resolution transmission electron microscope was used to observe the nanostructure of soot. The impact of blending different long-chain oxygenated fuels on soot was analyzed. Compared with pure n- heptane flame, the mean particle diameters of flames from n -heptane blended with 15 vol% PODE3 and 15 vol% MB decreased by 4.07 and 3.55 nm, respectively. As the MB blending ratio increased, the mean soot particle diameter decreased by 6.82 nm compared with pure n- heptane flame. Raman spectroscopy, Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy were employed to analyze the physico-chemical properties of soot samples. It was found that both PODE3 and MB effectively inhibited the soot formation and reduced the soot graphitization degree in flames. The effect of PODE3 on soot inhibition was more obvious at the same blending ratio. However, when the oxygen content in the fuel mixture was the same, the advantage of PODE3 was no longer maintained.
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高影响因子
ACS Omega
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2025
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IF 4.3
Shoufei Lu,Meilong Fu,Yanmin Mi,Changhai Cui
To enhance the recovery factor in low-permeability reservoirs and address the challenge of nanoparticle adsorption at interfaces, a smart oil displacement Janus nanosheet was synthesized using a template method. The Janus nanosheets possess an amphiphilic structure, with one side being hydrophilic due to carboxyl groups and the other side being hydrophobic due to alkyl groups. Compared to spherical nanoparticles, the sheet-like structure of the nanosheets provides a larger specific surface area and stronger interfacial adsorption capacity. Nanofluids were prepared using a simulated formation water with a salinity of 102,495 mg/L, and their properties were evaluated. The results demonstrated that the nanofluid exhibited excellent dispersion stability at 120 °C and a salinity of 102,495 mg/L. The emulsification index at 120 °C was 53.43%, indicating superior emulsifying performance. The nanofluid reduced the oil–water interfacial tension to 0.0203 mN/m and effectively modified the oil-wet rock surface to a hydrophilic state. Oil recovery experiments were conducted on three core samples with varying permeability. For the core with a permeability of 4.64 mD, the highest recovery rate was achieved, with a total recovery factor of 71.09%. Microscopic oil displacement simulations showed the displacement of residual oil after injecting the nanofluid. These comprehensive properties demonstrate that the Janus nanosheets exhibit higher oil displacement efficiency in low-permeability reservoirs, reflecting their intelligent response to reservoir conditions and their potential for improving recovery rates. A field test was conducted in the Q Oilfield, resulting in an increase of 5579 tons of oil, with a cost–benefit ratio of 1.78, demonstrating significant economic benefits.
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PubMed
高影响因子
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