Surface Innovations最新文献_第5页

Greenly prepared antimicrobial cotton fabrics using bioactive agents from Cupressaceae pods 利用柏科豆荚中的生物活性剂绿色制备抗菌棉织物

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-12-22 DOI: 10.1680/jsuin.22.01073

Murtaza H Syed, Syed Qutaba, Lubna Syed, M. A. K. Zahari, N. Abdullah, Z. Abro

{"title":"Greenly prepared antimicrobial cotton fabrics using bioactive agents from Cupressaceae pods","authors":"Murtaza H Syed, Syed Qutaba, Lubna Syed, M. A. K. Zahari, N. Abdullah, Z. Abro","doi":"10.1680/jsuin.22.01073","DOIUrl":"https://doi.org/10.1680/jsuin.22.01073","url":null,"abstract":"Antimicrobial fabrics have become essential in organizing and managing infestation and reducing odor formation by microbes. Various green sources add antimicrobial properties to fabrics, particularly cotton. However, the major problem with microbial fabrics is the reduction in antimicrobial activity after each wash. Cupressaceae pods have shown natural potential as an antimicrobial agent in herbal medicine. This study utilizes Cupressaceae for incorporating antimicrobial properties in cotton fabrics. After methanolic extraction of the Cupressaceae extract, it was applied to cotton fabrics. The application of the extract to cotton fabrics was performed by optimizing concentration, temperature and pH parameters. The extract-modified cotton showed the best performance at a 15 wt.% concentration, 140°C and pH 7.5. The treated fabrics were tested in the presence and absence of a binder using the standard washing method ISO 105-C10:2006. The mordant-treated fabric retained 16.4% more activity after 20 washes. Finally, the antimicrobial activity of the greenly developed antimicrobial cotton fabrics was checked against Staphylococcus, Escherichia coli, Bacillus and Candida albicans by using the AATCC 100-2004 test method. The study indicated that the prepared cotton fabric showed better antimicrobial activity against the earlier mentioned strains, except for C. albicans. The prepared antimicrobial fabric showed a wide range of antimicrobial activities and a lower fungal activity. Thus, the prepared fabric can be used for wound dressings, hospital staff gown material and athlete’s sportswear to prevent microbial infection.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42956170","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Friction and adhesion of Johansson gauge blocks 约翰逊量块的摩擦和附着力

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-12-16 DOI: 10.1680/jsuin.22.01083

A. Breki, Michael Nosonovsky

引用次数: 0

Self-cleaning coating for exterior wall of concrete building 混凝土建筑外墙自洁涂料

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-11-21 DOI: 10.1680/jsuin.22.01060

Guanghao Chen, Defeng Yan, Jiyu Liu, Youjiang Xu, Yuyang Zhou, Binghan Wu, Jinlong Song

{"title":"Self-cleaning coating for exterior wall of concrete building","authors":"Guanghao Chen, Defeng Yan, Jiyu Liu, Youjiang Xu, Yuyang Zhou, Binghan Wu, Jinlong Song","doi":"10.1680/jsuin.22.01060","DOIUrl":"https://doi.org/10.1680/jsuin.22.01060","url":null,"abstract":"Due to the advantages of beautiful appearance, the exterior wall real stone paint with properties of low-cost and good weather resistance has been widely applied in the concrete building for aesthetics and protection. However, the hydrophilicity of the exterior wall real stone paint make them susceptible to pollution by dust, acid rain, etc. Superhydrophobic coatings with the excellent self-cleaning property may effectively alleviate these problems, but the fabrication of the real stone paint coatings with superhydrophobicity has not been reported yet. Here, we developed a superhydrophobic exterior real stone paint coating (SEP-coating) with a water contact angle of 154 ± 3° and a rolling angle of 13 ± 2° by a simple and high-efficient physical blending method using emulsion, natural sand, low surface energy reagents and nano-SiO2. The SEP-coating possessed an excellent self-cleaning property for the pollutant including soil, dust and rust water, and had good anti-corrosion capability and outdoor time stability The SEP-coating also showed better solar reflectance characteristics than normal exterior real stone paint coating, which may contribute to lower temperatures in buildings during hot weather and save energy. In addition, a colorful SEP-coating for decorative requirements and large-area SEP-coating for practical application could be effectively fabricated, which is expected to have promising application prospects.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-11-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45085190","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Self-crimping of multi-chain polymers into carbon nanotubes 多链聚合物自卷曲成碳纳米管

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-11-21 DOI: 10.1680/jsuin.22.01072

Wendi Gong, Houbo Yang, Danhui Zhang, Ruquan Liang, Jianhui Shi, Anmin Liu

引用次数: 0

Improvement of corrosion resistance and research on corrosion mechanism after depositing Ni-Y2O3/Ni-graphene composite coatings on NdFeB magnets 钕铁硼磁体Ni-Y2O3/ ni -石墨烯复合镀层耐蚀性能的提高及腐蚀机理研究

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-11-14 DOI: 10.1680/jsuin.22.01057

Yaru Zou, Yaojun Lu, S. Rehman, Xuehui Zhang, Sangen Luo, Chaoxiang Jin, Zhenggang Zou, Bin Yang, Munan Yang

{"title":"Improvement of corrosion resistance and research on corrosion mechanism after depositing Ni-Y2O3/Ni-graphene composite coatings on NdFeB magnets","authors":"Yaru Zou, Yaojun Lu, S. Rehman, Xuehui Zhang, Sangen Luo, Chaoxiang Jin, Zhenggang Zou, Bin Yang, Munan Yang","doi":"10.1680/jsuin.22.01057","DOIUrl":"https://doi.org/10.1680/jsuin.22.01057","url":null,"abstract":"In this paper, we studied the corrosion resistance of the composite deposition of Y2O3 and graphene on nickel coating. The corrosion resistance of the coating was significantly improved after the composite deposition, especially for the Ni-graphene coating with the addition of 0.05 g/L graphene. The Ecorr and Icorr of the coating were optimized to 404.340 mV and 0.24 × 10−8 A cm−2. The surface morphology, microstructure, passivation behavior, and corrosion products of the coating were analyzed, and the mechanism of corrosion resistance enhancement was revealed. The results show that the deposition of the Y2O3 and graphene composite can decrease the surface roughness of the coating. The graphene composite effect is the most significant and greatly reduces the contact area between the coating and the medium. In addition, the particle composite deposition can also yield grain refinement. The graphene composite deposition reduces the grain size from 75.3 to 18.9 nm, significantly improving the nucleation and formation of the passivation film. The uniform deposition of graphene at grain boundaries can also hinder the infiltration of corrosive media into the interior region. Upon the composite deposition, the improved corrosion resistance of magnets significantly increases their performance and service life, facilitating their railway applications.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44679132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Preparation of self-healing polythiourethane/epoxy anticorrosive coatings based on dynamic disulfide bonds 基于动态二硫键的自修复聚硫氨基甲酸酯/环氧防腐涂料的制备

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-11-07 DOI: 10.1680/jsuin.22.01065

Mieyi Wen, B. Ou, Ping Zhu, B.-J. Niu, Yan Gou, Lijuan Chen

{"title":"Preparation of self-healing polythiourethane/epoxy anticorrosive coatings based on dynamic disulfide bonds","authors":"Mieyi Wen, B. Ou, Ping Zhu, B.-J. Niu, Yan Gou, Lijuan Chen","doi":"10.1680/jsuin.22.01065","DOIUrl":"https://doi.org/10.1680/jsuin.22.01065","url":null,"abstract":"Defects and mechanical damage that leading to peeling, corrosion, and other potential hazards during practical applications were inevitable in epoxy coatings due to the high cross-link density of the epoxy network. Herein, we synthesized a self-healing polythiourethane material (SPTU) containing with dynamic disulfide bonds for the design and preparation of a self-healing SPTU/epoxy coating. FT-IR, 1H NMR and SEM showed that 2-hydroxyethyl disulfide was successfully introduced into the polythiourethane system. Due to the fracture and reattach of double sulfur bond, 3% SPTU-Epoxy coating exhibited good self-healing properties in scratch-treated, the scratch being repaired completely after 2 h at 85°C. Meanwhile, the tensile properties of the completely fractured 3% SPTU-Epoxy sample retained 75.7% after self-healing. The Tafel polarization crurve and electrochemical impedance spectroscopy (EIS) results demonstrate the 3% SPTU-Epoxy coating showed excellent corrosion resistance and still provides considerable corrosion resistance after 19 days of immersion corrosion tests. The self-healing coating exhibited good self-healing ability under heating conditions attributed to the bond breaking and reconnection of dynamic bonds provided by the self-healing component. The self-healing property and corrosion resistance of the prepared coating effectively improve the service life of the epoxy coating and provide some guidance for corrosion protection of epoxy coating.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45141896","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fluid droplet spreading and adhesion studied by a microbalance: a review 微天平研究液滴扩散和粘附的研究进展

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-10-28 DOI: 10.1680/jsuin.22.01050

Youhua Jiang, J. Drelich

{"title":"Fluid droplet spreading and adhesion studied by a microbalance: a review","authors":"Youhua Jiang, J. Drelich","doi":"10.1680/jsuin.22.01050","DOIUrl":"https://doi.org/10.1680/jsuin.22.01050","url":null,"abstract":"A contact angle observed for a liquid-solid system is not necessarily a unique value and a few contact angles need to be carefully considered in relation to liquid spreading, adhesion and phase separation. Understanding of the significance of different contact angles has improved in the last few years through direct measurements of interactive forces between droplets/bubbles and solids together with the simultaneous visualization of the changes in their shapes. A microelectronic balance system is employed to measure the force of spreading after either liquid droplet or gas bubble attachment to a substrate surface, and the droplet/bubble-substrate adhesion forces after droplet/bubble compression, retraction, and detachment. Equipped with a camera in flank and data acquisition software, the instrument measures directly the forces, monitors droplet/bubble-surface separation with respect to distances over which the droplet/bubble stretches and collects optical images simultaneously. The images are used to analyze capillary pressure and surface tension forces based on the measured droplet/bubble dimensions, shapes of surfaces and values of contact angles. These measurements allow researchers to correlate the advancing, receding and most-stable contact angles with liquid-solid interactive forces and analyze their scientific meaning. This review summarizes the very recent literature reports on measurements and interpretation of liquid droplet/gas bubble interactive forces and associated contact angles.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-10-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49519673","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Laminar drag reduction in closed channel using bioinspired textured surfaces 层流阻力减少在封闭通道使用生物启发纹理表面

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-10-20 DOI: 10.1680/jsuin.22.01069

Shaofeng Xu, Juhan Lin, Yifan Yu, Hubiao Wang, Junjie Lu

{"title":"Laminar drag reduction in closed channel using bioinspired textured surfaces","authors":"Shaofeng Xu, Juhan Lin, Yifan Yu, Hubiao Wang, Junjie Lu","doi":"10.1680/jsuin.22.01069","DOIUrl":"https://doi.org/10.1680/jsuin.22.01069","url":null,"abstract":"Low flow drag is of great importance to a variety of engineering applications, and an effective way to achieve low drag is to use bioinspired micro-structured surfaces. This work aims to reduce the skin-friction drag in closed channel flow using textured surfaces inspired by leaves of indocalamus and rice. The channel formed by a polydimethylsiloxane chunk and a silicon wafer was fabricated to study drag reduction behavior for water or liquid paraffin oil in laminar flow. Bioinspired textures were processed on silicon wafer surface using deep silicon plasma etching method. We measured the pressure drop of water or paraffin oil passing through textured channels with different velocities. The maximum pressure drop reduction for the paraffin oil flow with low velocity (Re≈1) and for the water flow with high velocity (Re<1000) were about 5.1% and 27.3%, respectively. We also presented the contact angles of bioinspired textured surface, and then proposed mechanisms to explain the drag reduction. The hydrophobicity leading to the changing from the liquid-solid interface to the liquid-air interface is believed to provides the drag reduction for water flow, while the thin oil film formed on the textured surface due to the oleophilicity helps to reduce the oil flow drag.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44339835","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Leidenfrost instability in a circular container and its suppression using a rod 圆形容器的莱顿弗罗斯特不稳定性及其棒材抑制

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-10-17 DOI: 10.1680/jsuin.22.01066

Manjarik Mrinal, Xiang Wang, Z. Han, C. Luo

{"title":"Leidenfrost instability in a circular container and its suppression using a rod","authors":"Manjarik Mrinal, Xiang Wang, Z. Han, C. Luo","doi":"10.1680/jsuin.22.01066","DOIUrl":"https://doi.org/10.1680/jsuin.22.01066","url":null,"abstract":"Leidenfrost drops have demonstrated promising applications in, for example, drag reduction. However, large Leidenfrost drops may be unstable when their diameters exceed a critical value, leading to less control of such drops in their applications. In this work, through theoretical and experimental investigations, we explore the instability of a Leidenfrost drop in a circular configuration, as well as the suppression of this instability using a small rod. There are four findings. First, the diameter of the largest inscribed cylinder inside a rod-container configuration is the critical dimension to determine Leidenfrost instability. Second, in the cases of water and isopropyl alcohol, the threshold value of this diameter is 8.3λ ± 0.3λ, where λ is the capillary length of a liquid. Third, due to the specific interface profile between the liquid drop and the surrounding vapor layer, the threshold diameter of a circular container for the instability to occur is slightly larger than its counterpart in the corresponding Rayleigh-Taylor instability problem. Fourth and finally, placing a rod inside a circular container reduces the size of the largest inscribed cylinder in the container. If the diameter of this inscribed cylinder is below the threshold value, the instability inside the container is suppressed.","PeriodicalId":22032,"journal":{"name":"Surface Innovations","volume":" ","pages":""},"PeriodicalIF":3.5,"publicationDate":"2022-10-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46953157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

A hard durable transparent antifouling coating prepared by crosslinking ZrO2 and branched polysiloxane ZrO2与支链聚硅氧烷交联制备硬质耐用透明防污涂料

IF 3.5 4区材料科学

Surface Innovations Pub Date : 2022-10-12 DOI: 10.1680/jsuin.22.01049

Kaiqiang Zhang, Yong Zhu, Zhang Chen, Zongtao Zhang, Yanfeng Gao

引用次数: 0