Polymers
·
2025
·Vol. 17
·期 3
·422
·
IF 4.9
Qiannian Wang,Yuan Sang,Jiang Yang,Hailing Liu
Polymer corrosion inhibitors are reported to form dense films on carbon steel surfaces, and their thermostability enables survival in harsh downhole environments. In this paper, PEG-OTs was synthesized by mechanochemistry using ball mill by grafting tosyl on PEG. Using this solvent-free green chemistry, non-toxic PEG and PEG-OTs with various molecular weights (600, 2000, and 10,000 g/mol) were prepared and used as corrosion inhibitors. The corrosion inhibition performance of 5 × 10−3mol/L inhibitors on Q235 carbon steel in 0.5 M HCl solution was investigated using static weight-loss, electrochemical impedance spectroscopy, polarization curves, SEM, and contact angle measurements. The results show that, after modification, PEG-OTs has an elevated corrosion inhibition effect compared to PEG. A maximum of 90% corrosion inhibition efficiency was achieved using static weight-loss. The morphology study shows that a dense film formed to protect carbon steel. Thanks to their polymeric structure, a higher molecular weight leads to better corrosion inhibition.
研究领域:
材料科学
·
腐蚀与防护
·
绿色化学
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产品关联
DOI
PubMed
高影响因子
Micro & Nano Letters
·
2024
·Vol. 20
·期 1
·e70006
·
IF 1.5
Guodong Liu,Xinxin He,Xiaoya Liu,Donghui Ma,Jun Tang,Zongmin Ma,Yanjun Li,Jun Liu
This research explores the desorption mechanism and thermal stability of octadecyltrichlorosilane (OTS, CH 3 (CH 2 ) 17 SiCl 3 ) coating on quartz slides and in alkali-metal vapour cells. The morphological thermal-changes, energy dissipation diversity, and anti-relaxation characteristic of OTS coatings before and after exposure to Cs atoms by Fourier transform infrared spectroscopy, water contact angle measurement, atomic force microscopy imaging, collision energy dissipation analysis, and free induction decay of Cs atoms are measured systematically. The results show that the OTS coatings exhibit the best thermal stability under the specific process conditions, and the homogeneous and dense structure makes the adsorption of alkali-metal atoms more stable, which effectively reduces surface energy dissipation and prolongs the relaxation time of Cs atoms. The study provides certain reference for efficient anti-relaxation coating fabrication and coated cell application.
研究领域:
材料科学
·
表面化学
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产品关联
DOI
高影响因子
ADVANCED POWDER TECHNOLOGY
·
2020
·
IF 4.217
Chunhong Qi,He Chen,Youyi Sun,Qiang Fu,Luyan shen,Xiaolin Li,Yaqing Liu
The superhydrophobic flower-like OTS-SiO 2 particles with tunable size were synthesized for application in anti-icing technology, in which the nanosilica fibers were grown on surface of SiO 2 sphere. Furthermore, the anti-icing process of flower-like OTS-SiO 2 particles was investigated by a high speed video and thermal infrared imaging equipment. It was found that the flower-like OTS-SiO 2 particles with a diameter of 300.0 nm showed best anti-icing ability, in which the frozen time of water droplets could be prolonged to 564.0 s at −25.0℃. The good anti-icing ability was attributed to micro-nano hierarchical structure and surface modification of flower-like OTS-SiO 2 particles. The work has an important guiding implication for the subsequent design and preparation of superhydrophobic particles for application in anti-icing technology.
研究领域:
材料科学
·
表面工程
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2020
·Vol. 138
·期 19
·50401
·
IF 2.52
Faming Yang,Chen Xiong,Yingfu Lian,Xiaojun Wang,Zhimei Wei,Shengru Long,Gang Zhang,Jie Yang
Water-in-oil emulsions separation plays a critical role in industrial wastewater treatment. Membrane technology has attracted much interest in water-in-oil emulsions separation field for its excellent separation performance and facile processing method. However, versatile membrane with better solvent-resistance is still absent in chemical industry. In this work, oxidized polyarylene sulfide sulfone (O-PASS) membrane was severed as substrate, on which a hydrophobicity surface was built via coating of octadecyltrichlorosilane (OTS). And polydopamine (PDA) layer was employed and acted as connector between OTS and O-PASS membrane due to its abundant active hydroxyl group. The maximum water contact angle was 132.6° indicating good hydrophobicity of the membrane. Finally, the OTS/PDA/O-PASS composite membranes showed good separation performance for corrosive emulsions: the rejection and flux were 93.0% and 10.0 L/m 2 h for water-in-dichloromethane emulsions, and the rejection and flux were 92.3% and 34.6 L/m 2 h for water-in-n-hexane emulsions. The OTS/PDA/O-PASS composite membrane is a new candidate membrane for water-in-oil emulsions separation. In addition, the superior performance of the composite membrane under harsh environment conditions ensures its usefulness in resistance aggressive solvent.
研究领域:
环境工程
·
膜科学
·
废水处理
·
化学工程
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产品关联
DOI
高影响因子
Defence Technology
·
2026
·
IF 6.4
Yian Xu,Hao Xia,Jiale Quan,Yuxin Cong,Yuhao Wang,Zhihong Wu,Haoying Pang,Zhuangsheng Zhu
To enhance the anti-relaxation performance of alkali metal vapor cells in quantum sensors, a synergistic optimization and quantitative evaluation strategy for surface parameters of octadecyl-trichlorosilane (OTS) anti-relaxation coatings is proposed. By systematically adjusting solution concentration and reaction time, both the polarization retention angle and the surface polarization retention cross-section are effectively optimized, achieving a maximum retention angle of 135°. A theoretical framework is subsequently established to quantify adsorption energy based on the inherent correlation between these two surface parameters. A correction method for the retention cross-section, developed through a non-uniform wetting model, enables in-situ mapping of the kinetic contribution to adsorption behavior. Through kinetic and thermodynamic parameter extraction, the adsorption energy and Gibbs free energy of the multilayer OTS coatings are determined to be 0.13 eV, which represents a substantial reduction compared to the adsorption energy of bare glass surfaces, previously reported as 2.01 eV. Furthermore, longitudinal relaxation time measurements are carried out inside vapor cells, yielding a maximum collision count of 593, which provides strong evidence of polarization preservation capability. This approach provides both theoretical guidance and an experimental pathway for optimizing coating performance and analyzing adsorption mechanisms, thereby facilitating the development of high-performance alkali metal vapor cell materials for quantum sensing applications.
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DOI
高影响因子
SEPARATION AND PURIFICATION TECHNOLOGY
·
2024
·
IF 8.1
Shenghui Ning,Guangyi Tian,Fuchao Yang
With the frequent occurrence of oil spill accidents and the increasing discharge of industrial oily wastewater, oil–water separation has become a global challenge to protect the ecological environment. Simple, fluorine-free preparation of high-throughput superhydrophobic materials is important for realizing efficient separation of oil/water mixtures. Paper-based materials have several advantages, such as low price and renewability, which make them valuable for applications. In this work, we propose a simple and economical two-part immersion technique to prepare superhydrophobic cellulose paper, which is modified with octadecyltrichlorosilane (OTS) directly and then assembled hydrophobic silica. The prepared functionalized paper is not only superhydrophobic (static water contact angle up to 157°) and superoleophilic, but also exhibits acid and alkali resistance and abrasion cycle resistance. After 10 separation cycles for a variety of heavy oil/water mixtures, the separation efficiency was as high as 99.31 % with fluxes greater than 5100 L/(m 2 ·h). This simple, scalable, low-cost superhydrophobic paper shows great potential in the field of oil/water separation.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Wanli Yue,Li Chen,Libing Ren,Yongrui Qin,Gaohui Fan,Jianxin He,Weili Shao
The development of nanofiber sponge materials with three-dimensional structures, high porosities, and large specific surface areas is crucial for the rapid separation of water-in-oil emulsions. In this study, we fabricated Janus mullite nanofiber (MNF) sponges with efficient oil–water separation performance using a novel combination of electrostatic-assisted solution blow spinning ( E -SBS) and in situ growth. MNF sponges weighing 0.074 g were subjected to 100 compression cycles, with the stress reducing to 85.6 % of its initial value after impregnation with ZIF-8 nanoparticles and OTS. Consequently, the MNF sponges changed from hydrophilic to hydrophobic, and after 20 separation experiments, they still maintained high separation fluxes for oil–water mixtures and emulsions, achieving 7959 and 1803 L m −2 h −1 , respectively. Moreover, the preparation process of the MNF sponges is environmentally friendly, causing no environmental pollution. Therefore, Janus MNF sponges show great potential for applications in oil–water separation.
研究领域:
材料科学
·
环境科学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Haiping Yu,Yuanchun Qin,Brian Chen,Fan Song,Shenyang Deng,Lin Wen,Jiaji Pan,Dongying Hu
Fabrics tend to absorb moisture and foster bacterial growth during use, due to surface hydrophilic groups such as hydroxyl groups. Economically and environmentally, extending antibacterial efficacy through hydrophobic treatment proves highly viable. This study employed pressurized impregnation to load ZnO NPs onto polyester (PET) and cotton fabrics, subsequently modified by octadecyltrichlorosilane (OTS) spraying. Post-OTS treatment, the fabrics achieved water contact angles (WCA) of 148.74 ± 0.95° and 145.47 ± 1.13°, respectively. The composite coating displays substrate adaptability by resisting stains from ordinary liquids (tea, milk, coffee, vinegar, cola, etc.) and synthetic blood while maintaining natural breathability. Bacterial eradication is accomplished by synergistic methods, which include electrostatic interactions between ZnO NPs and bacteria, as well as light-induced reactive oxygen species (ROS), giving the fabrics dual antibacterial and hydrophobic properties. The material's antibacterial and hydrophobic qualities remain constant even after acid-base immersion, UV irradiation, mechanical friction, repeated washing, and ultrasonic treatment. This fully fluorine-free approach is environmentally beneficial, increasing fabrics' application possibilities in industries such as fabric manufacturing and medicine.
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产品关联
DOI
PubMed
高影响因子
Polymers
·
2023
·Vol. 15
·期 17
·3574
·
IF 5
Guang Yang,Zhonghua Chen,Changwei Lv,Lei Deng,Xiaofeng Luo,Yi Li,Songtao He,Qibin Liu
Hemihydrate phosphogypsum, an industrial solid waste product of phosphoric acid production, is abundant and inexpensive. If the problem of poor water resistance is solved, this material could be substituted for cement and other traditional energy-consuming cementitious materials in the construction industry. This approach would confer important economic and environmental benefits while promoting the resource utilization of phosphogypsum (PG). In this study, hydrophobic and self-cleaning coatings of H-PDMS/PMHS/OTS hybrid nanosilica were prepared on a post-hydroxylated PG surface using sol–gel and impregnation methods. The water contact angle, Fourier-transform infrared spectroscopy, Three-dimensional surface morphology and roughness analysis, X-ray photoelectron spectroscopy, scanning electron microscopy, surface abrasion tests, and tape adhesion tests were used to evaluate the hydrophobicity of the coatings. The results demonstrated that the in situ reaction produced a hydrophobic siloxane/nanosilica hybrid network that bonded to the PG surface via hydrogen bonding, making the otherwise completely hydrophilic PG hydrophobic (PGH-3, contact angle (CA) = 144.1°). The PGH-3 sample exhibited excellent chemical stability, maintaining a contact angle greater than 135° under strongly acidic or alkaline conditions. The contact angle remained at 123.7° after 50 tape-bonding tests. After 100 wear cycles, the contact angle remained at 121.9°. This study presents an environmentally friendly method and a straightforward application procedure to impart hydrophobicity to solid waste PG. Its potential is thus demonstrated in the field of PG-based construction materials and the comprehensive utilization of solid waste.
研究领域:
材料科学
·
环境工程
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产品关联
DOI
PubMed
高影响因子
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2025
·
IF 5.4
Haiping Yu,Brian Chen,Lin Wen,Dongying Hu
The majority of hydrophobic coatings in protective fabrics use expensive and environmentally harmful fluorine-based chemicals, which makes sustainable substitutes desperately needed. In this study, hydroxypropyltrimethyl ammonium chloride chitosan (HACC) and octadecyltrichlorosilane (OTS) are combined via vacuum impregnation and straightforward spray-assisted assembly to create long-lasting hydrophobic and antibacterial fabrics without the use of fluorine. Both polyester (PET) and cotton fabrics coated with 6 %HACC@OTS exhibit strong resistance to common pollutants (milk, coffee, vinegar, tea, and cola) and synthetic blood without compromising gas permeability. They also achieve good hydrophobicity, with the WCA of 150.05 ± 0.91° and 146.96 ± 1.21°, respectively. The quaternary ammonium groups in HACC impair the permeability of bacteria's cell membranes, resulting in a powerful antibacterial activity against E. coli and S. aureus . Additionally, the alkyl chains obtained from OTS combine to efficiently preserve hydrophobic durability and antibacterial stability even after the coating has been repeatedly treated in harsh environments (abrasion, washing, ultraviolet light, acid and alkali solution, and ultrasonic treatment). Furthermore, 6 %HACC@OTS coating can be applied to a variety of rigid (glass, aluminum, wood, stone) and flexible (plastic, filter paper) surfaces due to its broad range of substrate compatibility. This scalable, environmentally friendly approach is in line with green manufacturing principles and presents a viable option for multipurpose textiles in protective gear, functional clothing, and healthcare.
研究领域:
材料科学
·
纺织工程
·
抗菌涂层
·
绿色化学
·
功能纺织品
·
表面改性
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产品关联
DOI
高影响因子
JOURNAL OF BIOMATERIALS SCIENCE-POLYMER EDITION
·
2024
·
IF 3.6
Yu Jiang,Zhou Wan,Qi Liu,Xinxin Li,Bo Jiang,Mudan Guo,Pengjue Fan,Siyi Du,Doudou Xu,Chen Liu
Titanium (Ti) implants are widely used in orthopedic and dental applications due to their excellent biocompatibility and mechanical properties. However, bacterial adhesion and subsequent biofilm formation on implant surfaces pose a significant risk of postoperative infections and complications. Conventional surface modifications often lack long-lasting antibacterial efficacy, necessitating the development of novel coatings with enhanced antimicrobial properties. This study aims to develop a novel Ag-TiO2-OTS (Silver-Titanium dioxide-Octadecyltrichlorosilane, ATO) nanocomposite coating, through a chemical plating method. By employing a ‘resist-killing-disintegrate’ approach, the coating is designed to inhibit bacterial adhesion effectively, and facilitate pollutant removal with lasting effects. Characterization of the coatings was performed using spectroscopy, electron microscopy, and contact angle analysis. Antibacterial efficacy, quantitatively evaluated against E. coli and S. aureus over 168 h, showed a significant reduction in bacterial adhesion by 76.6% and 66.5% respectively, and bacterial removal rates were up to 83.8% and 73.3% in comparison to uncoated Ti-base material. Additionally, antibacterial assays indicated that the ratio of the Lifshitz-van der Waals apolar component to electron donor surface energy components significantly influences bacterial adhesion and removal, underscoring a tunable parameter for optimizing antibacterial surfaces. Biocompatibility assessments with the L929 cell line revealed that the ATO coatings exhibited excellent biocompatibility, with minimal cytotoxicity and no significant impact on cell proliferation or apoptosis. The ATO coatings provided a multi-functionality surface that not only resists bacterial colonization but also possesses self-cleaning capabilities, thereby marking a substantial advancement in the development of antibacterial coatings for medical implants.
研究领域:
材料科学
·
生物医学工程
·
表面化学
·
微生物学
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产品关联
DOI
PubMed
高影响因子
SURFACE REVIEW AND LETTERS
·
2021
·
IF 1.152
HAOTIAN CHI,JUNYING ZHANG,HENG YUAN,ZHONGYU CAI,SHENG ZOU,WEI QUAN
The most sensitive spin-exchange relaxation-free (SERF) magnetometer generally requires a working temperature greater than 100 ∘ C. To date, octadecyltrichlorosilane (OTS) coating is one of the best candidates for this temperature range. However, the performance and consistency of the OTS coatings within the alkali-metal vapor cells are still poor. In this paper, the formation of OTS coatings on borosilicate glass (BG) substrates was investigated. The effects of ambient relative humidity (RH) on the formation of OTS coatings were examined by atomic force microscopy (AFM) and contact angle measurement. The results showed that 75 % RH can improve the order of the OTS coatings and reduce the root mean square (RMS) roughness of the OTS coatings. Under three different ambient RHs, the soaking time of OTS molecules should be greater than 60 min to form complete OTS coating.
研究领域:
材料科学
·
应用物理
·
表面化学
·
纳米技术
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DOI
高影响因子
危险品化学品经营许可证（带存储）