LANGMUIR
·
2025
·
IF 3.9
Zhenjie Wang,Yuwei Guo,Chuliang Shen,Yijun Jiang,Hongjuan Zhang,Ruyi Xie
Superhydrophobic textiles have special applications in many fields such as medical treatment, military protection, oil–water separation, etc. In the large-scale pad–dry–cure process, a large number of polymer binders are often added to improve the superhydrophobic durability, resulting in a significant reduction in air permeability. To address this issue, a low-liquid atomization spray method was adopted to fabricate multi-durable superhydrophobic cotton fabrics using N1,N6-bis(2,3-epoxypropyl)hexane-1,6-diamine, a silica precursor, and fluorine-free hexadecyltrimethoxysilane as the main modifiers. The prepared fabric maintained excellent water repellency even after being subjected various harsh conditions tests such as 2000 cycles of friction, 40 washing cycles, ultrasonic treatment for 120 min, 200 tape peelings, and acid–alkali–salt corrosion for 24 h. The air permeability of the superhydrophobic fabric was measured to be 370.2 L m–2 s–1, which was merely 5% lower than that of the original fabric, indicating that the modified fabric retains satisfactory air permeability. The modified fabric exhibited an excellent self-cleaning effect with respect to various liquids. In addition, the prepared fabric showed good oil–water separation capability for both heavy and light oils. For heavy oil–water mixtures, the fabric sample exhibited a maintenance of 98.13% separation efficiency and a high flux of 18 032 L m–2 h–1 after 10 uses. These findings will help to promote the practical application of low-feed interface modification technology in the production of durable functional textiles.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2019
·
IF 3.131
Yongwei Cai,Qi Zhao,Xuejun Quan,Wei Feng,Qingkuo Wang
Superhydrophobic and superoleophilic meshes have attracted great attention in oil/water separating application. However, superhydrophobic surfaces are not only complicated in preparation but also easy to break in practical applications. In this paper, we prepared fluorine-free hydrophobic hexadecyltrimethoxysilane (HDTMS)-TiO 2 coated meshes with properties of cost-effectiveness, easy to manufacture, and high separation efficiency by a liquid phase deposition method. The surface topography , composition , and functional groups of the meshes were characterized by field emission scanning electron microscope (FE-SEM), energy dispersive X-ray spectroscopy (EDS), X-ray photoelectron spectroscopy (XPS), and Fourier transform microscopic infrared spectrometer (FT-IR) spectrum, respectively. A new gravity-driven oil/water separator was designed for the separation experiments. The separation efficiency of the hydrophobic HDTMS-TiO 2 coated meshes maintained over 97.8% after 35 separating cycles. This study indicated that the superhydrophobicity of the separating mesh was nonessential for the highly efficient oil-water separation. The fluorine-free hydrophobic HDTMS-TiO 2 coated meshes provided an economical and beneficial solution to treat industrial oily wastewater mixtures and environmental oil spills.
研究领域:
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
高影响因子
Biomimetics
·
2022
·Vol. 7
·期 2
·72
·
IF 3.743
Yahua Liu,Zhixin Feng,Haiyang Zhan,Wenna Ge,Yuhang Xia,Junqiu Zhang,Shile Feng
Hot-water repellency is of great challenge on traditional superhydrophobic surfaces due to the condensation of tiny droplets within the cavities of surface textures, which builds liquid bridges to connect the substrate and hot water and thus destroys the surface water-repellence performance. For the unique structural features and scales, current approaches to fabricate surfaces with hot-water repellency are always complicated and modified by fluorocarbon. Here, we propose a facile and fluorine-free one-step vapor-deposition method for fabricating excellent hot-water-repellent surfaces, which at room temperature even repel water droplets of temperature up to 90 °C as well as other normal-temperature droplets with surface tension higher than 48.4 mN/m. We show that whether the unique hot-water repellency is achieved depends on a trade-off between the solid–liquid contact time and hot-vapor condensation time, which determines the probability of formation of liquid bridges between the substrate and hot-water. Moreover, the designed surfaces exhibit excellent self-cleaning performance in some specific situations, such as oil medium, hot water and condensation environments. We envision that this facile and fluorine-free strategy for fabricating excellent hot-water-repellent surfaces could be valuable in popularizing their practical applications.
研究领域:
材料科学
·
表面工程
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Chunyuan Jiang,Xinrui Zhang,Haizhen Ji,Jie Zhang,Xingjian Li,Shoufang Xu,Faqiang Li,Yinwen Li
Fluorine/silicon-free waterborne polyacrylate/nano-ZnO composite cotton fabric coatings (EPSAs) were developed to address the potential environmental and health risks posed by traditional fluorine-containing finishing agents. A molecular bridge constructed by 1,6-hexanediol diacrylate (HDDA) formed a crosslinked network, promoting synergistic directional alignment of tert-butyl and long-chain alkyl groups to create a low-surface-energy chemical hydrophobic barrier. Meanwhile, the polyvinyl alcohol (PVA) modified nano-ZnO not only improved the dispersibility of nano-ZnO, but also enhanced its mechanical stability through the hydrogen bonding interaction and interpenetrating network structure between PVA molecular chains and the polyacrylate main chains. Additionally, the PVA-modified nano-ZnO and polyacrylate jointly constructed a micro-nano rough structure on the fiber surface. This effectively inhibited water adsorption and enhanced impermeability. This hierarchical synergistic effect enabled the optimized EPSA 4 coating membrane to achieve 5.4 % water absorption over 7 d while the coated cotton fabric demonstrated a 128° water contact angle with 2.5 h effective water impermeability that remained stable after 50 washing cycles. Additionally, the coating significantly enhanced the cotton fabric's UPF value from 30.5 to 93.3 and achieved antimicrobial efficiencies of 99.98 % against Escherichia coli and 99.95 % against Staphylococcus aureus . By retaining their inherent breathability, this innovative coating system provided cotton fabrics with long-term hydrophobicity, antimicrobial functionality, and UV resistance, offering an environmentally sustainable multifunctional textile solution for applications including medical protective garments, outdoor technical textiles, and other sectors requiring integrated performance and eco-friendly characteristics.
研究领域:
材料科学
·
纺织工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2022
·
IF 16.744
Wei Xiong,Xingyu Feng,Yi Xiao,Tao Huang,Xiaoyan Li,Zhencheng Huang,Shenghua Ye,Yongliang Li,Xiangzhong Ren,Xinzhong Wang,Xiaoping Ouyang,Qianling Zhang,Jianhong Liu
MBene, an emerging two-dimensional material generated from bulk ternary metallic boride (MAB phase), has gradually attracted increasing research attention. However, the fabrication of MBene is still a great challenge, resulting in no literature reported about the application of MBene in energy storage fields (e.g. lithium-ion batteries). It is not advisable to adopt the same HF etching strategy which is generally used for the fabrication of MXene owing to the severely corrosive and toxic properties of the HF acid. Here, a fluorine-free hydrothermal-assisted alkane solution etching method is used to prepare the two-dimensional (2D) MoB MBene from MoAlB. The 2D MoB MBene as an anode material in LIBs exhibits a high electrochemical performance, the results exhibit a reversible specific capacity of 144.2 mAh g −1 after 1000 cycles at the current density of 2 A g −1 , which is higher than many reported MXene anodes. This fluorine-free method provides a promising green strategy for exploring series of MBene materials for a wealth of application fields.
研究领域:
材料科学
·
能源存储
✓ 已验证
DOI
高影响因子
POLYMER ENGINEERING AND SCIENCE
·
2025
·
IF 3.2
Huolin Zhong,Hui Fang,Zhao Yan,Fangjuan Wu
MXenes, two-dimensional transition metal carbides and nitrides, show great potential in various applications. However, traditional synthesis methods often involve toxic fluorine-containing etchants, limiting large-scale production. This study introduces a novel, environmentally friendly approach for synthesizing Ti 3 C 2 T x MXene nanosheets using stone grinding-assisted exfoliation and mild alkaline etching at 80°C. The synthesized MXene nanosheets exhibited high aspect ratios with transverse dimensions mostly on the micrometer scale and a thickness of approximately 3 nm, corresponding to one to two layers of Ti 3 C 2 . MXene/polyvinyl alcohol (PVA) composite membranes were fabricated to demonstrate practical applications. The composite membrane containing 1 wt% MXene achieved a 99.9% UV shielding rate while maintaining 67% visible light transmittance. Furthermore, it significantly enhanced PLA's UV resistance, with protected samples retaining 98.1% tensile strength after 48 hours of UV exposure, compared with 47.8% for unprotected PLA. This fluorine-free synthesis method addresses environmental concerns and enables large-scale MXene production for advanced UV protection applications. Highlights Ti 3 C 2 T x MXene is made via stone grinding and alkaline etching. MXene nanosheets are produced in the micron range and are 1–2 layers thick. The fluorine-free synthesis enables green, large-scale production of MXene. MXene/PVA films show 99.99% UV shielding with 67% visible light transmittance. MXene/PVA coating improves PLA's UV resistance, keeping 98.1% of tensile strength.
研究领域:
材料科学
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环境科学
·
光学工程
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Tao Wang,Junling Yu,Jianmin Liu,Feng Jiang,Guo Feng,Jian Liang,Lifeng Miao,Quan Zhang,Qian Wu,Xinbin Lao
A fluorine-free route has been developed to fabricate V/Pr co-doped zircon (ZrSiO 4 ) ceramic pigments with Na 3 VO 4 and Pr(NO 3 ) 3 ·6H 2 O as colourants . The as-prepared pigments were characterized by XRD , Raman, XPS , UV–vis, FE-SEM, TEM and automatic colourimeters . The results show that Na 3 VO 4 can not only act as colourant to produce blue hue, but as mineralizer to accelerate the formation of V/Pr co-doped ZrSiO 4 pigment. A colour tuning between blue, green and yellow can be achieved by increasing the mole ratio of Pr/V, and the most intense yellow hue (L* = 74.55, a* = −0.38, b* = 46.82) is obtained at a mole ratio of Pr/V = 0.5. Both Pr 4+ and Pr 3+ cations are co-existed in the pigments, where Pr 4+ contributes to the generation of yellow hue while Pr 3+ undermines the yellow hue. The good chromatic ability in glaze at high temperature suggest its potential application in ceramic decoration.
研究领域:
材料科学
·
陶瓷工程
✓ 已验证
产品关联
DOI
高影响因子
COMPOSITES COMMUNICATIONS
·
2024
·
IF 6.5
Jiwang Chen,Ni Yao,Tingliang Wang,Jiajia Wu,Mingle Ding,Xinxin Zhang,Shichao Zhang,Sam S. Yoon,Bin Ding
To meet the increasing environmental requirements, it is urgent and inevitable for high-performance waterproof and breathable membranes to be fluorine-free. However, developing these membranes faces significant challenges in achieving high water repellency while maintaining desirable water vapor permeability. Herein, we present a high-performance fluorine-free waterproof and breathable membrane using electrospinning technology and a thermally induced coating-crosslinking method. The prepared nanofibrous membrane has low surface energy and crosslinked fiber networks due to hydrophobic group grafting and heat treatment. Benefiting from its microstructure and surface properties, the fluorine-free nanofibrous membrane exhibits excellent hydrophobicity (water contact angle of >130°), desirable pore structure and mechanical strength. Furthermore, the obtained non-fluorinated membrane exhibits excellent water pressure resistance of 95.27 kPa and water vapor permeability of 7.41 kg m −2 d −1 . Meanwhile, the crosslinking agent enhances the bond between the non-fluorinated hydrophobic modifier and the substrate, increasing the stability and robustness of the membrane. This study provides guidance for designing and preparing environmentally friendly waterproof and breathable membranes, with extensive application prospects in outdoor sports, healthcare protection and building exteriors.
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
ACS Applied Materials & Interfaces
·
2018
·
IF 8.097
Xin Li,Jin Wang,Yibo Zhao,Xuetong Zhang
Aerogels have been widely used in the fields like thermal insulation, energy storage, environmental remediation, catalysis, drug release, sensor, and cosmic dust collection, etc. Hydrophobic functionalization not only determines the surface energy and basic physical properties of the target aerogels but also be critical for their long-term stability due to their highly open-porous structures. However, there is still lack of facial and versatile methodologies for the hydrophobic functionalization of aerogels, especially for the nonsilica ones. Herein, two efficient fluorine-free strategies were developed to synthesize various hydrophobic and even superhydrophobic polyimide (PI) aerogels. First, superhydrophobic PI aerogels with contact angle higher than 150° were fabricated by the segregation self-assembly process between poly[4,4′-(4,4′-isopropylidenediphenoxy)bis(phthalic anhydride)-co-p-phenylene diamine] and poly[biphenyl-3,3′,3,4′-tetracarboxylic dianhydride-co-2,2′-dimethylbenzidine] (poly(BPDA-DMBZ)). These PI aerogels exhibited a lotus effect that water droplets could not wet the surface but could easily roll off. Second, various hydrophobic PI aerogels, including the well-documented superhydrophilic PI aerogels derived from DMBZ–BPDA and 4,4′-oxydianiline–BPDA, were synthesized by the density-induced hydrophilicity–hydrophobicity transition approach. These PI aerogels exhibited a petal effect that water droplets on the aerogel surface appeared spherical in shape, which could not roll off even when the aerogel was turned upside down. These two reported strategies might open new and straightforward ways to hydrophobic functionalization of other polymeric aerogel systems.
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
MACROMOLECULAR MATERIALS AND ENGINEERING
·
2022
·Vol. 307
·期 4
·2100757
·
IF 4.402
Lulu Tian,Gaihuan Ren,Pan Zhang,Bo Li,Shuzhen Chang,Hongqin Yu,Rongwu Wang,Jianxin He
Clothes that are comfortable and functional are important in daily life; however, the manufacture of fluorine-free functional fabrics with excellent waterproofness and breathability using simple and environmentally friendly methods still presents several technical challenges. Currently, the ultraviolet (UV) radiation-initiated thiol-ene click reaction is used for the construction of hydrophobic surfaces due to its high efficiency and the mild reaction conditions involved. Therefore, in this work, the electrospinning technique and the UV-initiated thiol-ene click reaction to introduce hydrophobic octadecanethiol (thiol) and 2,4,6,8-tetramethyl-2,4,6,8-tetra-vinylcyclotetrasiloxane (TMTVSi) into the silicon-based polyurethane/polymethyl methacrylate (Si-PU/PMMA) nanofibrous membranes is combined. After UV irradiation, the sulfhydryl groups of the thiol react with the carbon–carbon double bond of the TMTVSi, resulting in cross-linking between the nanofibers. The fluorine-free Si-PU/PMMA/TMTVSi-thiol-30 waterproof and breathable electrospun nanofibrous membranes are observed to show excellent properties, which include a hydrostatic pressure of 64.43 kPa, water vapor transmittance (WVT) rate of 7879 g m −2 d −1 , and robust tensile stress of 10.04 MPa, all of which enable the membrane to be widely used in the field of protective garments and oil–water separation.
研究领域:
材料科学
·
纺织工程
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2023
·
IF 6.6
Yihao Yang,Yuanyuan Tu,Xuefeng Gui,Zhijun Liu,Yaodong Zhang,Xiaohua Cui,Zhenzhu Huang,Zehui Dai
The implementation of conventional superhydrophobic surfaces (SHPOs) preparation method on a broad scale is constrained by its complexity, low wear resistance, as well as its reliance on potentially harmful fluorine-containing chemicals, etc. Herein, a wear-resistant, fluorine-free, strongly adhesive superhydrophobic composite surface was fabricated by applying the one-step spraying method. The superhydrophobic surface consisted of modified SiO 2 particles, commercial silicone paint, and a vinyl-capped epoxy polysiloxane (VEPS) which was synthesized as an adhesion promoter. The prepared coating exhibits a water contact angle (WCA) of 164.9 ± 1.3° and a sliding angle (SA) of 4.1 ± 0.6° with 30 wt% of modified SiO 2 , which provides the optimum trade-off between hydrophobicity and robustness. The superhydrophobic mechanism of the coating was elaborated based on its surface morphology . Moreover, the coating was subjected to various performance tests. After 12 h of immersion in solutions with different pH values, 26 linear wear tests or finger touch tests, the coating still exhibited superhydrophobicity, which indicates that it possessed excellent chemical durability and good abrasion resistance. Meanwhile, the coating still maintained a high water repellency when it had been subjected to tape peeling cycles, high temperature stability test or boiling water durability test. This facile approach to fabricate superhydrophobic surfaces greatly enhances the potential applicability of these coatings.
研究领域:
材料科学
·
表面工程
✓ 已验证
产品关联
DOI
高影响因子
CHEMISTRY OF MATERIALS
·
2025
·
IF 7
Jiaxing Zhang,Ajuan Zhou,Fang Hao,Kexin Yang,Yiren Yu,Yucai Qin,Xiongfu Zhang,Limin Ren,Anfeng Zhang,Guanghui Zhang,Chunshan Song,Xinwen Guo
The green synthesis of b-axis-oriented ZSM-5 nanosheets (NSs) is essential for facilitating their industrial production. Here, a set of cost-effective and eco-friendly additives is introduced for the tailored synthesis of thin ZSM-5 NSs with a b-axis thickness of 40 nm with the assistance of small seeds. Through a comprehensive exploration of synthesis methods and electron microscopy analysis, this work elucidates the pivotal roles of seeds and additives in controlling the crystal size and steering anisotropic growth kinetics during the crystallization process. The shortened straight channels of the thin ZSM-5 NSs along the b-axis significantly enhance the rapid transport of molecules within the micropores, thus manifesting a distinct catalytic advantage in the alkylation of benzene with methanol and methanol-to-propylene (MTP) conversion. Notably, the utilization of fluorine-free additives in the synthesis of thin ZSM-5 NSs marks an important step forward in zeolite materials, bridging the gap between laboratory experimentation and industrial scale-up.
研究领域:
材料科学
·
化学工程
·
环境科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）