JOURNAL OF HAZARDOUS MATERIALS
·
2024
·
IF 12.2
Shiyang Li,Chenchen Zheng,Longdou Tu,Dajian Cai,Yangxiang Huang,Congjie Gao,Yeqiang Lu,Lixin Xue
Tight ultra-filtration (TUF) membranes were constructed by in situ growing zinc imidazole frameworks micro-crystalline leaves (ZIF-L) in polyethylene imine (PEI) and polydopamine (PDA) deposit layers on porous polyethylene (PE) substrates. The effects of preparation conditions on the surface physical and chemical structures as well as on the dye/salt separation performance of the formed TUF membranes were systematically investigated. By inserting selective water permeation channels and increasing contacting surface areas, in situ-grown ZIF-L arrays tightly cross-linked in the coating matrix greatly increased water permeation without trading off dye/salt retention selectivity. The morphology of the included ZIF-L particles could be varied by adjusting the ligand/Zn molar ratio (α) in the preparation processes. Optimized PDA-PEI/ZIF-L@PE TUF membranes containing ZIF-L of cross-cross block morphology showed very high pure water permeability of 180 ± 20 L·m −2 ·h −1 ·bar −1 (LMHB) and retention selectivity (S CR/Na2SO4 and S MB/Na2SO4 ) of 267 and 43, respectively, as well as excellent stability and anti-fouling properties.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2024
·
IF 5.8
Zhenxuan Zhao,Yu Gao,Shuangshuang Zhao
A soft actuator converts external energy sources like electricity, light, heat, and humidity into mechanical energy.These actuators are widely used in biomedicine, artificial muscles, electrical switches, and data encryption. MXenes, as two-dimensional materials, provide significant advantages, including high hydrophilicity and excellent photothermal and electrothermal conversion capabilities. However, research on MXene-based actuators has mainly focused on Ti 3 C 2 T x , leaving the potential of other MXene materials underexplored. This study developed V 2 CT x /PE film-based stimulus-responsive actuators using lamination and cutting techniques, considering the differing thermal expansion and hygroscopic properties of V 2 CT x and PE films, and examined their electrothermal and photothermal properties. Under a light power density of 70 mW/cm², the V 2 CT x /PE film actuator achieved a bending angle of 61°.The application of the V 2 CT x /PE actuator in smart curtains and crawling machines demonstrates the potential of stimulus-responsive MXene-based composite films for use in smart home technologies and robotics.
研究领域:
材料科学
·
生物医学工程
·
智能设备
✓ 已验证
产品关联
DOI
高影响因子
POLYMER
·
2025
·
IF 4.5
Leqing He,Shuangbai Li,Chongpin Huang
In the context of composite materials that elude classification via conventional pretreatment methodologies such as crushing, granulating, and flotation—specifically within the domains of food packaging, construction materials, and engineering plastics—this research employed a one-step methanolysis-separation technique for the graded recycling of polypropylene (PP), polyethylene (PE), and polyethylene terephthalate (PET) in mixed plastics. Employing methanol as the reaction solvent, the benign and eco-friendly ionic liquid BMIMOH as the catalyst for the degradation of PET. PET was methanolized to produce dimethyl terephthalate (DMT), while PP and PE remained highly stable, were separated after the reaction, and subjected to subsequent recycling. The stability of PP and PE under methanolysis conditions was revealed through structural and thermodynamic analyses. Single-factor analysis and response surface methodology were employed to determine the optimal conditions for the methanolysis reaction. Additionally, the impact of different contents of PP and PE on the recovery of PET from the mixed plastics during the swelling-condensation process at high temperatures was explored. Under the optimal conditions, the yield of DMT was 94 % for the degradation of single PET, and when the ratio of PET in the mixed plastics was 50 %, the yield of DMT could still reach 90 %.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2020
·
IF 4.915
Dan Xue,Wen Wang,Longhai Piao,Mufang Li,Shuang Wang,Chenxue Xiang,Dong Wang
With the rapid development of electronic information technology, flexible transparent materials have been widely concerned and studied by researchers. Traditional transparent films have some problems in flexibility, transparency, or preparation method, which restrict their further development in scale production and application. Herein, we have developed a simple method by embedding the mass produced PVA- co -PE nanofibers into the PVP polymer matrix through photopolymerization method to produce a Polyvinyl Pyrrolidone/PVA- co -PE (PVP/NFs) composite film with high flexibility and transparency. Due to the nanoscale size and small refractive index contrast between nanofiber and PVP, the PVP/NFs composite film showed high light transmittance of 85.87%. In addition, the filling of PVA- co -PE nanofibers had a synergistic enhancement effect on the mechanical properties and thermal stability of PVP/NFs composite film. The tensile stress was as high as 16.6 MPa with a nanofiber content of 37.67 wt%, which was 4.05 times higher than that of the pure PVA- co -PE nanofiber film, and 2.81 times higher than that of the pure PVP film. Furthermore, the excellent flexibility of the PVP/NFs composite film enabled it to withstand a large-scale bending deformation under the action of external forces. The high flexibility, optical transparency and fast preparation made the PVP/NFs composite film a great application prospect in the intelligent electronic equipment and smart buildings.
研究领域:
材料科学
·
纳米技术
✓ 已验证
DOI
高影响因子
COMPOSITES SCIENCE AND TECHNOLOGY
·
2021
·
IF 8.528
Fanjia Zeng,Xu Zhao,Mengying Luo,Wen Wang,Xing Qing,Ying Lu,Weibing Zhong,Qiongzhen Liu,Jie Luo,Mufang Li,Dong Wang
With the rapid development of thermoelectric (TE) generators, the TE device that is transparent, flexible, and can be used for a long time under high humidity and low/high temperature has aroused great interests. In this study, a new hydrophilic substrate of poly (vinyl alcohol-co-ethylene) (PVA-co-PE) nanofiber membrane was used to support the poly (3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), and then the PEDOT:PSS/PVA-co-PE composite was encapsulated by epoxy. Due to the size effect of nanofibers, the PVA-co-PE/epoxy composite area shows a good transmittance of 72% at a wavelength of 600 nm, while the area containing the PEDOT:PSS remains black. This kind of transparent packaging structure is more conducive to the application of TE device. Moreover, the special interpenetrating structure and hydrogen bonding between the three phases of PEDOT:PSS, PVA-co-PE NM and epoxy resin greatly enhance the interfacial adhesion of PEDOT:PSS/PVA-co-PE/epoxy composite. The morphology, mechanical properties , transmittance, TE performance, bending resistance and environmental stability of the transparent composite TE device were analyzed. The new composite structure proposed in this research gives the PEDOT:PSS/PVA-co-PE/epoxy TE device outstanding flexibility and environmental stability. The TE performance remains stable after 2000 cycles repeated bending and after placing one end of the TE device in hot steam and ice water. All the results demonstrate the potential application of the transparent composite TE device in the field of flexible electronic device packaging and applications.
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
Waste and Biomass Valorization
·
2024
·
IF 2.6
Wang Xin,Yu Shenglong,Li Yuan,Fang Yue,Wang Yifan,Yalikun Nuerbiya
This paper investigates the recovery of waste PE (mulch film) from Xinjiang by solvent recovery method. Under the guidance of solubility parameter theory, combined by HSPiP (version 4.1.07) experiment and HSPs library screening, xylene was selected as the most suitable solvent for recovery of PE. Subsequently, the solid–liquid method was used to graft MAH (maleic anhydride) to PE, and the optimal process conditions were obtained through orthogonal experiments, and the successful grafting of MAH to PE was verified by infrared spectroscopy. Then through XRD(X-ray diffraction) and other checks to analyze the PE before and after grafting, MAH did not change the crystal arrangement of PE, nor did it alteration the crystal type, the introduction of MAH enhanced the surface energy of PE and reduced the regularity of the PE structure. The results of DSC(Differential scanning calorimeter) showed that after MAH grafting, the nucleation site on the surface of PE increased, which could make the modified PE crystallize rapidly, so that the cold crystallization peak disappeared, and the stability was enhanced, which is of great significance for subsequent asphalt modification. Graphical Abstract
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
POLYMER COMPOSITES
·
2023
·Vol. 44
·期 9
·6097-6107
·
IF 5.2
Merewai Jier,Zhicheng Bai,Jinfeng Dai,Linbo He,Feixiang Yin,Zhiqian Lin,Wangbin Zhang,Lina Liu,Lijun Qian,Youhua Xiao,Xianxu Zhan,Pingan Song
Fabricating wood-plastic composites (WPCs) using recycled plastic and wasted biomass materials is one of the effective approaches to alleviate the global energy crisis and reduce carbon emission. However, the unsatisfactory mechanical properties and fire safety hazards significantly limit the application of WPCs. Herein, recycled high density polyethylene (R-PE), bean dregs and intumesce flame retardant (IFR) were melt-blended into flame-retardant WPC by mechanochemical crosslinking. The results show that the as-prepared WPC within 22 wt% IFR achieves a satisfactory UL-94 V-0 rating and a limiting oxygen index of 31.0%, exhibiting a 40%, 27.6%, and 16.4% reduction in peak heat release rate, total heat release and total smoke production respectively compared to controlled WPC. The results also revealed an unexpected improvement in the mechanical performance of WPCs using the strategy (elevation of 73.6% in the elastic modulus and 75.9% in the breaking elongation, respectively), which can be attributed to the improved interfacial compatibility between R-PE, bean dregs and IFR. This work offers an innovative and feasible approach for fabrication of high-performance fire-retardant WPC based on recycling waste plastics and agriculture wastes, and contributing to the circular economy and sustainability in accordance with the greening strategy in the world.
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
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Xin Dai,Jinqi Wang,Jialiang Zhou,Ning Tang,Senlong Yu,Gongxun Zhai,Hengxue Xiang,Hao Yu,Meifang Zhu
The frequent outbreaks of infectious diseases underscore the critical need for the development of advanced functional protective clothing materials. Herein, we successfully prepared a PE-Pd nonwoven fabric by activating the surface of polyethylene (PE) fibers and constructing Pd-N bonds to ensure the robust attachment of palladium (Pd) nanoparticles to the fabric surface. The PE-Pd fabric demonstrated excellent antibacterial performance, with a minimal Pd addition of just 0.14 %, resulting in 99.9 % inhibition rate against both Escherichia coli ( E. coli ) and Bacillus subtilis ( B. subtilis ). This low concentration ensures high biosafety while retaining potent antibacterial efficacy. The fabric also exhibited a contact angle of up to 104.9 ± 5.9°, significantly reducing microbial adhesion. Additionally, it effectively inhibited biofilm formation, further enhancing its protective properties. Notably, the fabric retained its original moisture permeability, ensuring comfort while maintaining robust barrier functionality. This work presents a promising strategy for the design of next-generation protective clothing, striking an optimal balance between comfort, enhanced safety, and superior barrier performance.
研究领域:
材料科学
·
微生物学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
Advanced Membranes
·
2025
·
IF 9.5
Guoke Zhao,Tian Zhong,Xinkai Li,Hao Yu,Guoyuan Pan,Yang Zhang,Yiqun Liu
Scholarly discourse surrounding the thin film composite organic solvent nanofiltration (TFC OSN) membrane field has largely been dominated by focusing on the optimization of the selective layer. However, this often leaves the porous support layer, with its innate solvent resistance, cost-effectiveness, and superior permeability, in the shadows. This study presents a novel OSN membrane utilizing a polyethylene (PE) battery separator as the porous substrate. The structural affinity between ethylene-vinyl alcohol and PE facilitates efficient hydrophilic modification, which allows for uniform and compact polyamide selective layer formation through interfacial polymerization. The HPE-NF-1.0 membrane exhibits rejections of 99.5 %, 96.7 %, 100 %, and 97.2 % for Methyl Orange, Rhodamine B, Congo red, and Rose Bengal, respectively. It also shows a solvent flux of 52.5 LMH in methanol and robust resistance against alcoholic solvents and DMF. Using PE as the porous substrate, we bypass intricate and time-demanding cross-linking processes and complex pore-preservation post-treatments, providing a simplified strategy for TFC OSN membrane fabrication.
研究领域:
材料科学
·
膜分离技术
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
Fashion and Textiles
·
2021
·Vol. 8
·期 1
·1-12
·
IF 2.2
Chen Yuanli,Fan Hui,Zha Xinlin,Wang Wenwen,Wu Yi,Xiong Yi,Yan Kun,Wang Yuedan,Wang Dong
High efficiency and anti-pollution oil/water separation membrane has been widely explored and researched. There are a large number of hydroxyl groups on the surface of silica, which has good wettability and can be used for oil-water separation membranes. Hydrophilic silica nanostructures with different morphologies were synthesized by changing templates and contents of trimethylbenzene (TMB). Here, silica nanospheres with radical pores, hollow silica nanospheres and worm-like silica nanotubes were separately sprayed on the PVA -co- PE nanofiber membrane (PM). The abundance of hydroxyl groups and porous structures on PM surfaces enabled the absorption of silica nanospheres through hydrogen bonds. Compared with different silica nanostructures, it was found that the silica/PM exhibited excellent super-hydrophilicity in air and underwater “oil-hating” properties. The PM was mass-produced in our lab through melt-extrusion-phase-separation technique. Therefore, the obtained membranes not only have excellent underwater superoleophobicity but also have a low-cost production. The prepared silica/PM composites were used to separate n-hexane/water, silicone oil/water and peanut oil water mixtures via filtration. As a result, they all exhibited efficient separation of oil/water mixture through gravity-driven filtration.
研究领域:
材料科学
·
环境工程
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
Nanoscale
·
2017
·Vol. 9
·期 48
·19216-19226
·
IF 7.367
Bing Xiong,Weibing Zhong,Qing Zhu,Ke Liu,Mufang Li,Gang Sun,Dong Wang
The development of electronics towards a more functions-integrated, flexible and stretchable direction requires mechanically flexible substrates with high thermal and dimensional stability and optical transparency. Herein, rolls of an optically transparent PVA-co-PE nanofibrous membrane/epoxy composite with synergistically enhanced thermal stability, very low CTE, and outstanding mechanical properties are reported. The nanoscale size, the unique inter-stack structure, and the strong interfacial interactions between the PVA-co-PE nanofibers and the epoxy contribute to the synergistic effects. Because of the match between the refractive index (RI) of the PVA-co-PE nanofibers and the epoxy matrix, the visible light transmittance of nanocomposite film could be as high as 85% and the composite film was still optically transparent with a nanofiber loading content of up to 61.7 wt%. The break strength and compliance matrix of the composite film with a high fiber loading of 61.7 wt% increased by 2.3 times of that of the neat epoxy film and exceeded 3000 m2 N−1, respectively. PVA-co-PE nanofibers have a very low CTE value (3.634 × 10−6 K−1) and could be applicable as a reinforcement to reduce the thermal expansion of epoxy. Furthermore, we developed a flexible alternating current electroluminescent (ACEL) device based on the transparent composite film and the experimental results showed that the transparent composite film could serve as substrate for flexible electronic devices. In addition, their electrical and optical properties were evaluated.
研究领域:
材料科学
·
柔性电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ANALYST
·
2016
·Vol. 141
·期 20
·5864-5869
·
IF 4.033
Ningning Zhou,Guowen Meng,Zhulin Huang,Yan Ke,Qitao Zhou,Xiaoye Hu
This report presents a simple and inexpensive fabrication approach to a flexible transparent composite film as a “cut-and-paste” surface-enhanced Raman scattering (SERS) substrate for in situ detection of organic pollutants. First, a self-assembled monolayer of Ag-nanocubes (Ag-NCs) is obtained at the air/water interface. Then, the Ag-NC monolayer is retrieved onto a flexible transparent polyethylene (PE) film to achieve an Ag-NC@PE composite film as a flexible SERS substrate. As the Ag-NCs in the monolayer are closely and uniformly packed on the PE film, the Ag-NC@PE composite film shows high SERS-activity with good signal homogeneity and reproducibility. Furthermore, the flexible transparent Ag-NC@PE composite film is “cut into” small pieces and directly “pasted” onto contaminated fruits for in situ SERS detection, as a result 10 nM thiram, 1 μM 4-polychlorinated biphenyl and 10 nM methyl parathion contaminants on oranges are detected, respectively. Therefore the Ag-NC@PE composite film is an inexpensive and effective SERS substrate for rapid in situ detection of organic pollutants in aqueous solutions, on fruits and other solid objects.
研究领域:
材料科学
·
环境科学
·
分析化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
危险品化学品经营许可证（带存储）