Polymers
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2022
·Vol. 14
·期 9
·1786
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IF 4.967
Dongyang Liu,Yuqing Duan,Shumei Wang,Murong Gong,Hongqi Dai
Studies have shown that fluorinated oil repellents are potentially harmful to humans and the environment, and therefore, the development of non-toxic, green, and environmentally friendly oil repellents has become inevitable. Microcrystalline wax is a branched saturated alkane with a molecular weight of 580–700 Da, which has a lower surface tension than edible oil. Herein, microcrystalline wax emulsion (fluorine-free oil repellent) was prepared by mechanical stirring–homogenization, the effects of emulsifier ratio and dosage on the emulsion performance were systematically investigated, and the resultant stable microcrystalline wax emulsions were applied to the paper surface to explore the oil and water resistance and water vapor barrier performance. The results showed that stabilized microcrystalline wax emulsion was obtained at the emulsifier Span-80/Tween-80 ratio of 5:5, and the emulsifier dosage was 20% (relative to the microcrystalline wax). When 6 g/m2of microcrystalline wax was applied to the surface of starch pretreated paper, the kit rating value of the paper was high, at up to 10/12, the Cobb60value decreased to 12.5 g/m2, the overall migration of paper was less than 10 mg/dm2, and the water vapor permeability was reduced by 81.9%, which met the requirements of oil and water resistance performance of food packaging paper.Keywords:microcrystalline wax emulsion;oil and water resistance;fluorine-free oil repellent
研究领域:
食品科学
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材料科学
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环境科学
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产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2019
·
IF 8.456
Sudip Kumar Lahiri,Pengcheng Zhang,Cheng Zhang,Lin Liu
Limited robustness is a serious drawback for superhydrophobic coatings and degrades the performance of superhydrophobic surfaces in practical applications. Although fluororeagents have excellent durability for superhydrophobicity, their use has been restricted due to various health and environmental concerns. In this work, we describe a facile and efficient fabrication strategy for creating robust fluorine-free superhydrophobic composite coatings that are prepared by a simple dip-dry method, in which the H3BO3-incorporated SiO2–alkyl-silane coatings are deposited on woven cotton fabric surfaces followed by polydimethylsiloxane modification. The coated surface shows a large water contact angle of 157.95 ± 2° and a small sliding hysteresis angle (SHA) of 3.8 ± 0.6°, demonstrating excellent superhydrophobicity. The coated fabric surface also exhibited robustness and durability, withstanding a tape-peeling test (under 48.05 kPa) for around 80 repetitions and sandpaper rubbing (loaded 100 g) for 40 cycles. Furthermore, the coated fabric surface displayed self-healing and oil–water separation capacities. The developed superhydrophobic coatings in this study are robust, environmentally benign, and easy to fabricate, showing promising applications in textile industries.
研究领域:
材料科学
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纺织工程
·
表面化学
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产品关联
DOI
PubMed
高影响因子
PROGRESS IN ORGANIC COATINGS
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2022
·
IF 6.206
Jiating Wen,Zhe Sun,Fanglong Zhu,Haojun Fan
A fluorine-free anti-smudge waterborne polyurethane coating was constructed via the dispersion of hexamethylene diisocyanate trimer into organosilicon-grafted waterborne polyurethane. In the film-forming process, the interaction among carboxyl, hydroxyl and isocyanate groups blocked the hydrophilic groups and improved the density of the coating, thereby preventing contaminants from penetrating into it. Furthermore, the organosilicon side chain migrated onto the coating surface to form a low surface energy amphiphobic layer, which endowed the coating with superior anti-graffiti performance. The surface energy of the as-constructed coating was 24 mN m −1 . The water, diiodomethane and hexadecane contact angles were 95°, 70° and 36°, respectively, with corresponding sliding angles of 35°, 10° and 1°, thereby showing that the coating had no affinity to oil- and water-based ink graffiti. More strikingly, the anti-graffiti performance remained after 400 abrasion cycles under a pressure of 110 kPa and under harsh chemical treatment (strong acids, bases and salts). The constructed coating also showed an optical transparency as high as 93 % due to the high crosslinking degree.
研究领域:
材料科学
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表面化学
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产品关联
DOI
高影响因子
CELLULOSE
·
2024
·
IF 4.9
Zhou Yuan,Kong Que,Li Jiefang,Li Rongye,Li Zhiguang
Superhydrophobic cotton fabrics have received much attention in recent years. They have been constructed usually by lowering surface energy and increasing surface roughness. Because of the significant environmental harm caused by fluorine-containing reagents, difficult preparation techniques, and low wear resistance, finding a simple approach to prepare a fluorine-free, wear-resistant, strongly sticky superhydrophobic cotton fabric remains a challenge. In this study, we describe a fluorine-free superhydrophobic cotton fabric using the simple preparation approach of immersion, which creates nanoscale siloxane aggregates dispersible in organic solvents. The modified cotton fabrics are characterized by scanning electron microscopy, fourier-transform infrared, and energy dispersive spectroscopy. Excellent superhydrophobicity (ultrahigh water contact angle is 165.2° and sliding angle is 7.2° as well as excellent self-cleaning properties) has been easily applied to cotton fabrics. Superhydrophobic cotton fabrics also have good anti-fouling properties for many common types of liquids, such as milk, coffee, cola, etc. It has been established that these waterproof coatings exhibit outstanding mechanical endurance against water impact, abrasion, and laundering. Superhydrophobic fabrics have a wide range of possible uses due to their readily available coating materials, simple application technique, and strong mechanical endurance. Graphical abstract
研究领域:
材料科学
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纺织工程
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环境科学
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产品关联
DOI
高影响因子
Materials
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2019
·Vol. 12
·期 10
·1592
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IF 2.972
Binbin Zhang,Weichen Xu,Qingjun Zhu,Shuai Yuan,Yantao Li
The massive and long-term service of 5083 aluminum alloy (AA5083) is restricted by several shortcomings in marine and industrial environments, such as proneness to localized corrosion attack, surface contamination, etc. Herein, we report a facile and cost-effective strategy to transform intrinsic hydrophilicity into water-repellent superhydrophobicity, combining fluorine-free chemisorption of a hydrophobic agent with etching texture. Dual-scale hierarchical structure, surface height relief and surface chemical elements were studied by field emission scanning electron microscopy (FE-SEM), atomic force microscopy (AFM), energy dispersive X-ray spectroscopy (EDS) and X-ray photoelectron spectroscopy (XPS), successively. Detailed investigations of the wetting property, self-cleaning effect, NaCl-particle self-propelling, corrosion and long-term behavior of the consequent superhydrophobic AA5083 surface were carried out, demonstrating extremely low adhesivity and outstanding water-repellent, self-cleaning and corrosion-resisting performance with long-term stability. We believe that the low cost, scalable and fluorine-free transforming of metallic surface wettability into waterproof superhydrophobicity is a possible strategy towards anti-contamination and marine anti-corrosion.Keywords:fluorine free;silanization;superhydrophobic;corrosion protection;self-cleaning
研究领域:
材料科学
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表面工程
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腐蚀与防护
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产品关联
DOI
PubMed
高影响因子
RSC Advances
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2017
·Vol. 7
·期 39
·24374-24381
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IF 3.108
Sheng Wang,Sanding Wu,Jiazhang Zhang,Tao Wang
Cost-effective, scalable methods to create antiwetting fabric are in high demand for applications ranging from outerwear to water purification and oil–water separation. Conventionally, polymer reagents such as low-surface-tension fluorinated reagents and long alkyl polymers are often incorporated in anti-wetting fabrics to enable water repellency. However, because of their high stabilities and propensity for bioaccumulation, alternative methods that are cost-effective, eco-friendly, and scalable are highly desirable. Herein, we present a simple, environmentally friendly approach to fabricate fluorine-free, recyclable, self-cleaning superhydrophobic coatings. Using only one vacuum heating treatment and without any chemical modification, superhydrophilic TiO2-immobilized polyester fabrics were converted to superhydrophobic fabrics. These fabrics can be applied for oil/water separation, and the adsorbed grease can be photodecomposed quickly by photocatalysis without the use of organic detergents. On the loss of hydrophobicity, the fabric can be heated under vacuum, regenerating the superhydrophobicity.
研究领域:
材料科学
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环境科学
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化学工程
✓ 已验证
产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2022
·
IF 6.206
Xixue Yang,Hui Li,Ling Li,Minhua Li,Tieling Xing,Guoqiang Chen
Superhydrophobic (SH) fabric is widely used in production and life because of its excellent water repellency, self-cleaning, and anti-fouling properties, however, long process and poor durability against repeated laundering and abrasion of SH fabrics remain challenges. In this study, we report a fluorine-free, short-process and robust SH cotton fabric obtained by dip-coating with SH coatings based on UV induced thiol–ene click reactions among 3-mercaptopropyltriethoxysilane (MPTES), octavinyloctasilasesquioxane (OV-POSS) and 2 %–3 % (mercaptopropyl)methylsiloxane-dimethylsiloxane co -polymers (S-PDMS), and the coated fabric is enough durable against repeated laundering, abrasion, chemical corrosion and UV aging. Furthermore, its self-healing ability owing to heat treatment (140 °C, 30 min) can further improve the coating durability, based on which the coating can withstand at least 28 cycles of repeated accelerated washing (equivalent to 140 cycles of normal home laundering) and maintain its superhydrophobicity. Additionally, the coating can separate oil-water mixtures, and the separation efficiency is more than 99 %, even after 10 cycles of repeated oil-water separation processes. The combination of short-process and self-healing ability makes it very promising in the large-scale manufacturing and application of SH surfaces.
研究领域:
材料科学
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
SURFACE & COATINGS TECHNOLOGY
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2023
·
IF 5.4
Zhong Zhang,Yaxin Meng,Haitao Niu,Hua Zhou
Clean production of fluorine-free and colorful superhydrophobic surface coating has been highly demanded in many applications but still faces many major challenges. Herein, a one-step clean coating process has been developed to make robust fluorine-free superhydrophobic coating with outstanding color fastness and self-healing property. The coating system comprises cycloolefin copolymer polymer (COC), hexadecyltrimethoxysilane (HDTMS), hydrophobic functionalized TiO 2 nanoparticulates and dyeing pigments. Janus cotton fabrics are prepared by applying the TiO 2 -HDTMS/PB/COC composite coating solution onto the facing side of the fabric by an electrospraying technique. The coated fabric side demonstrates superhydrophobicity showing water contact angle (WCA) of 167.3° ± 2.2° and sliding angle (SA) of 6.9° ± 0.5°, while the un-coated side still retains its original hydrophilic property. The coating shows excellent color fastness and strong bonding strength that can withstand many severe treatments with little affection on color and superhydrophobicity. The coating's original superhydrophobicity can be restored from chemical or physical damages. The developed coating system have also been applied to many other substrates (e.g. polyester, wool, mesh membrane, sponge, etc.). More importantly, the process has low energy consumption with almost no waste liquid produced during the coating process. This simple yet clean coating strategy meets the requirements of green and low energy dyeing, and will benefit the development of robust multifunctional coating .
研究领域:
材料科学
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纺织工程
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表面化学
✓ 已验证
产品关联
DOI
高影响因子
Surfaces and Interfaces
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2024
·
IF 5.7
Tiancheng Wei,Xin Fan,Qichao Cheng,Jiangfeng Cai,Yecheng Wang,Jie Wang,Zongpu Xu,Yajun Shuai,Quan Wan,Yuyin Chen,Mingying Yang
The separation of oil and water can be effectively addressed through the application of superhydrophobic coatings. This method, known for enhancing the self-cleaning, anti-corrosive, and friction-reducing properties of materials, typically employs fluorine reagents to ensure the durability of the coating nanostructure. However, the use of fluorine reagents raises concerns related to health and the environment. We present a straightforward and efficient approach to fabricate a robust, fluorine-free superhydrophobic composite coating. The coating solution, comprised of hydrophobic silica nanoparticles and polydimethylsiloxane (PDMS), is formed through sonication. The resulting superhydrophobic coating is effortlessly applied to silk fabric through immersion and subsequent drying/curing. micrograph confirms the creation of porous micro/nanostructures on the silk fabric's surface. Exceptional superhydrophobicity is demonstrated with a water contact angle (WCA) of 161 °±1.5 ° and a small sliding angle (SA) of 5 °±0.5 °. The coating's firmness, durability, and UV resistance are assessed through 20 cycles of sandpaper friction (load 200 g) and repeated tape peeling tests. Furthermore, the modified silk fabrics exhibit excellent capabilities in oil-water separation. This fluorine-free superhydrophobic coating, characterized by its robustness, environmental friendliness, and ease of manufacture, holds promising applications in the textile industry.
研究领域:
材料科学
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环境科学
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纺织工程
✓ 已验证
产品关联
DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Xiaoyuan Zhang,Jinfeng Zhang,Yuanfen Huang,Xiaohong Liu,Bin Shang,Xin Liu,Weilin Xu,Dongzhi Chen
Micro-nano structures play a pivotal role in constructing superhydrophobic fabrics. However, the micro-nano structures, formed by hydrogen-bonding assembly of inorganic nanoparticles, are susceptible to falling off, making superhydrophobic fabrics nondurable during practical applications. To address this issue, chemical bonding is proposed to construct micro-nano structures on cellulosic fibers by reactive phenyl T 7 -POSS-OH. Subsequently, polydimethylsiloxane (PDMS) binder is further introduced on surfaces of cotton fibers by dip-coating. Astonishingly, the treated cotton fabrics exhibit impressive superhydrophobic stability under harsh conditions including immersion in acidic/alkaline media, or organic solvents, high-temperature and outdoor exposures. Interestingly, the as-fabricated cotton fabrics show outstanding thermal self-healing capability even if suffered from extreme treatments including mechanical abrasion, UV irradiation, laundering and air plasma etching. Most notably, mechanical strength of the modified fabric is improved by two times as compared to that of the pristine cotton fabric. Unfortunately, both air permeability and thermal stability of the modified cotton fabric are slightly weakened due to reactive POSS. Additionally, the modified cotton fabric also exhibits excellent stain resistance, self-cleaning ability and oil-water separation performance. These findings provide an instructive strategy for developing durable multifunctional cotton fabrics, envisioning promising application prospects in self-cleaning, oil-water separation and water-proof fields in the future.
研究领域:
材料科学
·
纺织工程
✓ 已验证
产品关联
DOI
高影响因子
Biosurface and Biotribology
·
2022
·Vol. 8
·期 1
·23-33
·
IF 0
Shuyi Li,Chuankun Xie,Wenliang Zhang,Dongsong Wei,Zaihang Zheng,Yan Liu
A fluorine-free and multifunctional superhydrophobic coating (r-MSC) was prepared by the one-step spraying method. The coating had superhydrophobic and low-adhesion properties with the water contact angle of 161.5° ± 1° and the sliding angle of 3.2° ± 0.5°. It could be prepared by spraying while maintaining superhydrophobic surface characteristics on any substrates. The coating owed outstanding mechanical durability and chemical stability. Moreover, the coating also possessed the ability of self-cleaning, anti-fouling, anti-icing, and flame retardant ability. Importantly, the presence of multifunctional coating endowed the substrate with both water-resistant and fireproof properties. Besides, it also showed excellent oil-water separation ability, which presented the oil-water separation efficiency of over 90% for different types of oils after 10 separation cycles. Furthermore, the coating could improve corrosion inhibition performance and the corrosion current density was reduced by two orders of magnitude from the polarization curve. The r-MSC had the advantages of simple preparation, fluorine-free, environmentally friendly and appropriate for large-area fabrication, which could be applied to various fields.
研究领域:
材料科学
·
环境科学
·
化学工程
✓ 已验证
DOI
PROGRESS IN ORGANIC COATINGS
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2024
·
IF 6.5
Fangyuan Ren,Furong Tao,Tingting Yang,Yuezhi Cui,Libin Liu
Controlling the structure, chemical and thermal properties of the material surface is crucial to improve the utilization of resources and reduce energy consumption. In this work, a simple, fluorine-free spraying strategy is adopted to build a high-performance superhydrophobic coating. The superhydrophobic layer is obtained by mixing the adhesive (prepared by UV-assisted click reaction) with particles of different scales. Octa(3-glycidyloxypropyl) polyhedral oligomeric silsesquioxanes (GPOSS) with phenylphosphonic acid are added to achieve flame-retardant effect. The coating exhibits the excellent superhydrophobicity (WCA = 165°), self-cleaning and mechanochemical durability even under severe environments such as harsh abrasion, high temperatures, UV exposure and other strong alkaline substances. In addition, the coating has anti-icing, resistant to metal corrosion and exhibits excellent flame-retardant properties (pkHRR reduced by 30.2 %). The technology can provide technical support and theoretical basis for the application of high-performance special wetting materials in the field of energy conservation and environmental protection.
研究领域:
材料科学
·
环境科学
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能源科学
✓ 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）