Environmental Technology & Innovation
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2024
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IF 6.7
Mengyao Pan,Yuwei Jin,Yanli Ye,Wenbin Jiang,Lisha Zhu,Wangyang Lu
Silk is a promising textile resource, but its degumming treatment still lacks efficient and non-polluting methods. In this paper, an innovative silk degumming process combining microwave pre-treatment and steam degumming is introduced. When the technical parameters of microwave-steam synergistic degumming were 10 min of microwave, 120 ℃ of steam temperature, and 30 min of steam time, the degumming efficiency of the specimen was three times of the traditional Na 2 CO 3 degumming method, and the energy consumption was only one-half of the traditional method. In terms of time efficiency, the traditional Na 2 CO 3 degumming took 2.75 h, while this novel method took only 0.75 h. Among the samples, the mechanical properties of the specimens treated with microwave for 10 min were the best, with the warp breaking strength of 542.20 N and the weft breaking strength of 356.19 N. Meanwhile, the hygroscopicity and air permeability were also the best compared to the traditional treating samples. This indicates that microwave-steam synergistic degumming technology is a clean technology with the advantages of high sericin degumming rate, short degumming time, low energy consumption, and no use of any chemicals. This method is conducive to achieving better and faster sustainable development.
研究领域:
纺织科学
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环境科学
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材料科学
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产品关联
DOI
高影响因子
NEW JOURNAL OF CHEMISTRY
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2018
·Vol. 42
·期 14
·11739-11745
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IF 3.201
Ying-Tao Zhao,Xu Yan,Hong-Wei He,Meng-Nan Liu,Xiao-Xiong Wang,Guang-Di Nie,Jun Zhang,Jie Fu,Yun-Ze Long
Solvent recovery is a big challenge in conventional solution electrospinning for the large-scale production of ultrafine fibers because the precursor utilization ratio is usually less than 20 wt%. In this paper, we report an eco-friendly two-component electrospinning technique for the fabrication of acrylate composite fibers using a homemade device at room temperature. During this electrospinning process, the two-component spinning solutions (component A: t-butyl peroxy-2-ethyl hexanoate (BPOEH), isobornyl methacrylate (IBOMA), nitrile rubber (NBR), methacrylic acid (MAA); component B: N,N-dimethylaniline (DMA), IBOMA, NBR and MAA) are nearly all electrospun into ultrafine fibers, and the utilization ratio of the precursor can reach more than 90 wt%. The fiber solidification mechanism can be ascribed to the rapid polymerization of the IBOMA monomer in the presence of free radicals formed by a redox initiation system (BPOEH + DMA), which is different from the solvent evaporation in solution electrospinning or cooling solidification in melt electrospinning. Such a two-component electrospinning technique may stimulate the development of an eco-friendly approach to fabricate composite and functional ultrafine fibers.
研究领域:
材料科学
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环境科学
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化学工程
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2024
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IF 7.1
Zhaopeng Hu,Benteng Liu,Xin Jiang,Qiao Li,Hongda Meng,Yihu Song,Yongzhong Bao,Qiang Zheng
Developing eco-friendly technologies for producing recyclable, high-performance thermoplastic vulcanizates (TPVs) is of critical urgency. Herein, four deep eutectic solvents (DESs) synthesized based on accelerator CZ (N-cyclohexyl-2-benzothiazolesulfenamide) were used to replace CZ to promote the vulcanization of natural rubber (NR). The synthesized DESs could reduce vulcanization temperature and improve vulcanization efficiency, and the DES-aided low-temperature vulcanization of NR gums is favorable for preparing high-strength and low-dissipation vulcanizates. Introducing DESs in dynamic vulcanization can shorten processing time by 71% and reduce mechanical energy input by 37% without interfering with the mechanical properties of TPVs formed by cross-linked NR particles dispersed in an ethylene-vinyl acetate copolymer matrix. Moreover, TPVs exhibit excellent resilience at room temperature. This study provides a sustainable approach for TPV processing with enhanced performance and environmental compatibility.
研究领域:
材料科学
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化学工程
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可持续化学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Saiwei Luan,Huizhan He,Lei Zhang,Jie Yu,Xiuhua Cao,Jingxi Wang,Zhenxiao Fu,Rong Sun
The use of environmentally friendly aqueous tape casting has emerged as a promising route for fabricating high-quality BaTiO 3 -based films, particularly for ultra-thin multilayer ceramic capacitors (MLCCs). In this study, a high-solids-content BaTiO 3 slurry was formulated using APC (a polycarboxylate ammonium salt) as the dispersant, WB4101 as the acrylic binder, and PL002 as the plasticizer. The resulting 9.50 μm green tape exhibited a high density (3.65 g/cm 3 ), tensile strength (7.65 MPa), and fracture strain (11%), indicating good mechanical integrity. BaTiO 3 -based MLCC chips prepared from this tape showed a room-temperature capacitance of ∼28.0 nF and a dielectric loss of 0.02. Comprehensive evaluations of temperature coefficient of capacitance (TCC), ferroelectric hysteresis, DC-bias-dependent dielectric behavior, and resistivity degradation under accelerated DC stress were conducted. Notably, the TCC satisfied the X7R specification (−55 °C to 125 °C, ΔC/C 25 °C ≤ ±15%), confirming excellent dielectric temperature stability. Ferroelectric hysteresis characteristics, DC-bias-dependent dielectric stability, and resistance to degradation collectively demonstrate the excellent electrical reliability of the material. These results demonstrate that the proposed aqueous tape casting system is effective for producing reliable, high-performance BaTiO 3 -based MLCCs and provides a practical pathway for future development of lead-free, eco-friendly capacitor technologies.
研究领域:
材料科学
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电气工程
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陶瓷材料
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环保技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）